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  1. Trailer Brake Controller
  2. Tekonsha
  3. Electric
  4. Proportional Controller
  5. Up to 3 Axles
  6. Dash Mount
Tekonsha Primus IQ Trailer Brake Controller w/ Custom Harness - 1 to 3 Axles - Proportional
Tekonsha

Tekonsha Primus IQ Trailer Brake Controller w/ Custom Harness - 1 to 3 Axles - Proportional

$117.89
Trailer Brake Controller
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In Use/Installed

This proportional brake controller has simple controls and a digital display for diagnostic information. Includes 3 boost levels, a slide-bar manual override, built-in battery protection, automatic leveling, and continuous diagnostics. Great Prices for the best trailer brake controller from Tekonsha. Tekonsha Primus IQ Trailer Brake Controller w/ Custom Harness - 1 to 3 Axles - Proportional part number TK78ER can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Tekonsha Trailer Brake Controller

  • Electric
  • Proportional Controller
  • Up to 3 Axles
  • Tekonsha
  • Dash Mount
  • Under-Dash Box
  • Automatic Leveling
  • LED Display
  • Up to 90 Degrees

This proportional brake controller has simple controls and a digital display for diagnostic information. Includes 3 boost levels, a slide-bar manual override, built-in battery protection, automatic leveling, and continuous diagnostics.


Features:

  • Brake controller activates trailer brakes in proportion to your vehicle's braking action
    • Automatically adjusts trailer's braking based on deceleration of tow vehicle
  • Straight-forward controls keep settings within easy reach
    • Gain setting lets you adjust the amount of power sent to the trailer's brakes
    • 3 Boost levels let you adjust initial braking power and aggressiveness
    • Slide-bar manual override allows you to control trailer sway or stop in emergencies
  • LED display shows your current settings and diagnostic information
  • Built-in safeguards protect your vehicle, trailer, and the controller
    • Runs continuous diagnostic checks to alert you to any potential problems
    • Minimizes drain on car battery when not in use
    • Prevents trailer brakes from overheating by reducing power output to them during prolonged stops
  • Quick-disconnect feature lets you easily remove and store the controller when not in use
    • Replacement wiring harness (sold separately) and replacement bracket (6927 - sold separately) required to swap controller between vehicles
  • Easy installation with automatic leveling
    • Position anywhere from -90 degrees to 90 degrees up and down
    • Controller must be parallel with direction of travel and horizontally level
    • No need to wire into your vehicle - custom-fit harness lets you plug in and go
    • Mounting bracket and hardware included


Specs:

  • Application: trailers with up to 3 axles (6 brake assemblies)
    • Compatible with electric brakes only
  • Dimensions: 5" long x 4-3/8" wide x 2-1/2" tall
  • Mounting range: between -90 degrees and 90 degrees vertically
  • Warranty:
    • Limited lifetime on brake controller
    • Limited 1-year on wiring harness


Gain Power Adjustment

Tekonsha Primus IQ Gain

You can adjust the gain (also known as output) with the thumbwheel on the front of the controller. Gain lets you set the maximum amount of power that will be applied to your trailer's brakes. A heavier trailer will need more power to achieve smooth, safe braking, while a lighter trailer will need less. Typically, the gain is only readjusted when you experience changing road conditions or if the weight of your trailer changes.


Power Boost for Heavy-Duty Towing

The boost setting controls the aggressiveness of your trailer's braking, meaning how quickly the brakes reach the maximum braking level. You can adjust this when you're towing heavy loads and you need more umph to bring your trailer to a stop. Your tow vehicle doesn't need that much power to brake in time, but your heavy trailer does.


Depending on the level of boost, your trailer brakes can start at either 13 percent or 25 percent of the set gain. What this means is that, instead of starting at 0, the brakes will start at 25 percent and get to 100 percent sooner. This keeps the trailer from pushing your tow vehicle forward.


If your trailer weighs less than your tow vehicle, no boost is needed. But, if you want your trailer to lead the braking, you can select level B1.


Boost Levels:

Approximate Gross Trailer Weight Boost Level Increase in Initial Power Output
Less than tow vehicle GVW B1 13%
Equal to tow vehicle GVW B1 or B2 13% or 25%
Up to 25% more than tow vehicle GVW B2 or B3* 25%
Up to 40% more than tow vehicle GVW B3* 25%

*Both B2 and B3 offer a 25-percent boost in initial power. But the braking curve for B3 is more aggressive than that of B2. This means that, even though you will start out with the same intensity when using these boost levels, you will get an overall more aggressive braking experience with the higher level. So if you use B3, you will reach maximum braking sooner than if you use B2.


To adjust the boost, use the blue push-button on the top of the Primus IQ.


Slide-Bar Manual Override

Tekonsha Primus IQ Manual Override

The Tekonsha Primus IQ comes with an easy-to-reach, slide-bar manual override, great for stopping sway or controlling your trailer's momentum in emergencies. To engage the manual override, just push the slide-bar to the left, towards the center of the controller. This will activate the trailer's brakes and brake lights without you having to apply the brakes on your tow vehicle, perfect for limiting trailer movement while you're cruising.


Quick, Simple Installation

The Primus IQ can mount between -90 degrees and 90 degrees vertically, but the brake controller still needs to be horizontally level and parallel with the direction of travel.


After mounting the Primus IQ unit in your cab using the included bracket, simply plug the included custom harness into your vehicle. The other end of the harness plugs into the brake controller. To remove the IQ for storage when you're not using it, just unplug the unit and slide it out of the bracket. With a replacement wiring harness (sold separately) and replacement bracket (6927 - sold separately), you can even transfer the IQ to another vehicle.


Note: If you don't already have a 7-way plug at the back of your vehicle, take a look at our exclusive 7- and 4-way brake controller installation kit (ETBC7 - sold separately).


Proportional Braking

What is proportional Braking

The Tekonsha Primus IQ brake controller comes equipped with proportional braking to give you the best towing experience. Proportional braking means that your trailer brakes mimic your tow vehicle's brakes. If you slam on the brakes in your vehicle, your trailer brakes will activate with the same intensity; if you brake lightly, your trailer brakes lightly too. The trailer's braking is in proportion to your vehicle's braking. This saves wear and tear on the tires and the brakes on both your vehicle and trailer.


The Primus IQ uses an internal inertia sensor to detect how your vehicle is braking so it can send the right amount of braking power to your trailer. It measures the inertia of your tow vehicle and activates the trailer's brakes to slow at the same rate. The result is uniform braking across your towing setup. No push-pull action - just smooth, proportional braking every time.



90160 Tekonsha Primus I-Q Proportional Brake Controller - 1 to 4 Axles

Replaces 39528 Hidden Hitch and 20191 Draw-Tite I-Stop IQ Proportional Brake Control

307200 Tekonsha Brake Control Wiring Adapter with 2 Plugs

Replaces 3072-P

Item # TK78ER

Installation Details TK78ER Installation instructionsAlternate Instructions TK78ER Installation instructions



Video of Tekonsha Primus IQ Trailer Brake Controller w/ Custom Harness - 1 to 3 Axles - Proportional

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Tekonsha Primus IQ Trailer Brake Controller Review

Hi there hollers there. Today we're going to be taking a look at Tekonsha's Primus IQ proportional trailer brake controller.This brake controller is going to be your entry level into a proportional brake controller and even though this is entry into proportional, I would recommend it over most of your time delay modules, just to how much smoother your breaking experience is going to be with a proportional controller, because proportional means that it uses an internal inertia sensor to detect the movement of the vehicle.So as we hit the brakes and go to a stop, that inertia sensor is going to detect that loss of motion and it's then going to use that information to apply a signal to the trailer brakes at the back, which will apply them. But it uses this information to help match the application of the brakes, to what you're doing here in the vehicle. So that way, when you hit the brakes, you're going to get a softer brake application at the trailer if you hit the brake softly in the vehicle. And then if you need an aggressive stop, like an emergency stop and you hit the brakes hard here in the vehicle, it's then going to detect that quick stop and it's going to put out a hard, aggressive brake to your trailer.With your time delays, you're just going to have whatever you have your setting to on your adjustment. And then a few seconds after applying the pedal, it will then apply to that exact amount that you've got it set to.

And that can be useful if you do a lot of off roading because you just want your brakes to apply. But for most people that are just going to be driving out on the roads, hauling going from campsite to campsite, proportional is going to be significantly smoother and a much more enjoyable experience.For example, when using a time delay brake controller with our boat here, if we come into an emergency situation or we're getting off the highway and we need to hit the brakes to come to a stop, with that time delay, we've got them set aggressive so that way we can get the application we need so this boat's not pushing us up that off-ramp. But when we're just breaking around town, going through stoplights and just here in the city, every time we hit the brakes, that brake controller applies with that same pressure and it's too much. We feel the trailer wanting to stop us before we get to the stop that we wanted to come to at the stoplight. So then we have to adjust our time delay brake controller down and up to meet those various situations so it feels properly when driving.

With our proportional controller in here, once we set the adjustment for the application, at that point, when we go into those different situations, the controller's going to take over and do all of those adjustments for us. So it just feels smooth the entire time.Our initial adjustment we're making is just for the particular size of the trailer that we're currently hauling. And with our boat here, we are getting pretty close to the weight of our Sorento. So we are going to be using the boost two setting with it to give us a little bit more aggressive braking to match this.Now we're just talking about the boost setting on our brake controller and it has three different boost options, as well as being able to turn the boost completely off. The boost is just going to give it a more aggressive strategy when using that inertia sensor information to be more aggressive.

And that's important when you've got extremely heavy things, you need that more aggressive braking. So when we got our John boat here hooked up, we're likely going to have it in the boost one, or maybe even the boost offsetting depending on how it feels, because this is significantly lighter than what our vehicle is.And for you people at home hauling a camper that is likely heavier than your vehicle, you'll want to use that boost three setting to get that more aggressive braking so this isn't pushing you when you're coming to a stop off the highway. Now, regardless if you're in the boost one, two, three or you have the boost turned off, your power adjustment is going to play a factor into how hard that applies. I'm going to hit the manual slider all the way over so you can see our maximum output. And as we adjust this, it does dial back what our maximum is going to be.

So if we have it on that boost three setting, it's going to apply more aggressively, but it's not going to apply harder than where we've got our power output set to here. So that way you can set that maximum and that can be really useful when you've got a medium or smaller trailer. Maybe you don't ever want this inertia sensor to put it at that maximum output. You can dial that back with the setting.Now, if you're using those boost settings, like when we we're backing our boat up here, it does make it more aggressive. And when you're backing up that inertia sensor might be applying a little bit too early, because when you're backing up, you're doing things slow and you're doing a lot of turning and a lot of tapping on the brake to get that position you need to, so you can get it into that spot. And that might be applying your brake controller's brakes here on your trailer, causing it to stop. And then all of a sudden you're backing into your trailer. Well, there's a reverse mode setting that we can temporarily apply for when backing up. So that way our boost isn't being too sensitive and applying those things.To put it into that reverse mode and temporarily cancel out the boost, you'll just want to hold onto your brake pedal. Just press down on that and then press down on the boost button and after a few seconds, you'll see, it will have a flashing R indicating that you're in the reverse mode. And now you don't have to worry about those brakes applying when you're backing up. And like most of your traditional brake controllers, there is a manual slide on it so you can manually apply the brakes on your trailer, if you need to.This can be useful for testing purposes. If you're just wanting to test the output, test the proper operation of your brakes, you can manually apply it with this. And it's also useful if your trailer starts to sway behind you, because that swaying motion when it starts going on, can potentially cause issues with stability and driving the vehicle. To straighten that out, we can hit our manual slide a little bit and that's going to apply the brakes in our trailer. So instead of being able to sway, our vehicle now wants to leave the trailer because the trailer is applying the brakes. That's going to pull them taut, and it's going to bring that trailer straight in line behind your vehicle once again.When your trailer is disconnected, you will see an NC located here on the screen. We just disconnected it right now and it does this so that, you know, hey, if you are driving, you have just been disconnected. You're no longer applying a brake signal to your trailer. It lost that input. And if you don't have anything connected, you're in your vehicle right now. You can be sure that you're not connected. You hit your slider here, it'll say NC. This can also be useful if you plug in your trailer and it doesn't seem like it's functioning, you should not see NC when your trailer's plugged up. That means that it's not currently detecting that there is a trailer plugged in and then you can correct any faults you've got with the wiring on your trailer, test it back out and ensure that you don't see the NC when you're hooked up.The two digit display will display your power output. And it also constantly monitors for any faults. And you can get fault codes on here. So you can use the troubleshooting in your instructions to help determine where the fault is and what's causing it.You'll have two different mounting options that come included with your brake controller. You've got the snap in mounting option, which is my preferred option because it's a little bit more low profile. It keeps itself closer to the dash and it only requires the two screws and you can easily click the module in and out with this bracket. It simply slides in the bottom there. And then it clicks up into place.And with our other bracket here, it does have adjustments. So if you can't achieve the appropriate angle with this bracket, you may need to use this one, but this can be mounted in a positive 90 degree to negative 90 degree orientation. So currently we're at zero that all the way straight up would be positive and all the way straight down would be negative 90 degrees. So you get a lot of options on how you're going to mount it. As long as you mount it level this direction, it can be again, tilted up or down, front to back. This other option here, you can see it has a slot on it. So you can mount it up using two screws here, wherever you want to position it. And with the slotted hole here, it will bolt to the side and then you actually get a tilt. So you can change that adjustment if you need it. In most cases, though, I feel like this is the best bracket for most vehicles.Now, when it comes to the installation of your brake controller, that's going to vary quite a bit, depending upon your vehicle. If you've got a truck, in most cases, they are already pre-wired underneath the dash and you can get a custom fit wire adapter here at etrailer.com, that will go from our Tekonsha brake controller and plug directly into the factory connector and then you're good to go. You'll want to use our fit guide to determine if there is a factory connector available for your particular vehicle.Now, something like our Kia here, your smaller SUVs or regular cars, those ones are likely not going to have a factory option. We have kits available though. Kit ETBC7 is going to provide you with your seven way connector as well as the wiring to get it hooked up for your brake controller.In addition to ETBC7, if you don't have a fully functioning four way connector, you'll need that as well because ETBC7 provides you with the wiring and seven way that you need for your brake controller, but does not provide you with the wiring for your lighting functions. But we have custom fit wiring options here at etrailer.com that have plug and play connectors for most vehicles. So you can simply just plug those in line and get a functioning four pole at the back, which provides you with all of your lighting signals. That'll just plug into ETBC7 here and then you can finish installing the rest of the kit to turn that four pole into a fully functioning seven way that can work with your brake controller.Now, if you've got multiple trailers you want to haul, then instead of going with the entry level proportional that the Primus IQ provides, I would recommend to Tekonsha's Prodigy P3. This will allow you to set trailer profiles. So if you've got a small trailer and a medium and a large sized trailer, or maybe two different large ones, maybe one's electric over hydraulic, you can make those adjustments and save those profiles. So that way you can just choose that profile when you hook up and it's already got your settings saved and you're ready to go.If you have limited space under your dash for a brake controller, there are brake controllers that can actually mount at the back and plug directly into the seven way connector like Curt's Echo. That's definitely one of the best options for that limited space there in the front. I'm a pretty tall guy and it really bothers me when I'm driving and my knee keeps hitting on my brake controller. So that's one of my favorite ones out there since I can get that out of the way and put it at the back of the vehicle.And that completes our look at Tekonsha's Primus IQ proportional brake controller.


by:

THANKS for the Brake Controller unit from ETrailer. It arrived w/in 5 days from your MO location to my So CAL residence.

Even as an Engineer/Scientist from the Delta IV rocket program and no experience with brake controllers, I was able to install this unit by myself. Your continued (live human) support and online video clips proved to be the key elements to this installation...without my symbolic pocket protector.

I have attached a few images of the unit, mounted to the fuse-panel cover (3/16 attachments with locking hex nuts) in a 2006 Toyota 4Runner SR5 (with factory tow package). The placement of the unit onto the panel cover allows a new panel cover (no holes drilled) to be used when it is time to sell the vehicle.



by:

I have installed the Tekonsha Primus IQ Brake Controller with the ETBC7 Brake Controller wiring kit on my 1990 Chevy Blazer Scottsdale. Everything that I needed was included and the installation instructions were simple. We will be trying it out for the first time in early November when we are going to rent a small travel trailer. If we like the experience we may buy a travel trailer to go with our brake controller! Before and after pictures attached. Thanks for the quick service and support.



by:

Product was delivered on time. Installation vehicle was a 2012 Ford Expedition Limited with factory tow package and was a breeze. I purchased the pre-wired pigtail which fit the Ford connector with no problem. I used the snap-in plastic bracket, mounted on the knee panel as close as possible to the center console. I held the bracket in place using painters tape to check the mounting position before driving in the self tapping screws. Start to finish was less than 10 minutes. I pull a 29' tandem axel travel trailer which comes in around 7,000 lbs and so far, stopping has been smooth and even with no jerking.



by:

The Tekonsha package says "2018-Current Atlas (all models)". I have a 2023 Atlas Cross Sport & it DOESN'T fit. This was a bummer because I paid for expedited shipping, and now to return it - I'll be losing even more money since I have to pay for the return label. The product itself feels quality, so I cant knock it for that. If you have a 2023 & newer VW Atlas please be aware this won't fit even though Tekonsha says it will.

etrailer always does a great job with shipping, so I did receive the package very quickly.



by:


Pictures of the install. Approximately
a 20 min job. First picture my finger is pointing to the factory plug with the etrailer supplied harness plugged in. Note the harness did not specify that the white common with the ring terminal should be connected to ground. But then again that SHOULD be obvious. I will be towing this weekend so I will rate the product then. One minor gripe is that there is always power to the unit which is a battery drain (as evidenced with the key out of the ignition and the unit stayed on) Not sure as to the impact but the controller can always be unplugged or removed.
Sorry for the dirty floor mats in the photos.



by:

installed on a 2009 F-150 everything was as advertised. It was plug and play. My truck had the wire plug behind the dash so was easy to hook up. I installed it in the hole below the coin holder. To reach the pre-wired plug you have to remove the panel anyway. I don't like any wires showing or anything I might hit with my leg. So did not mount it on the lower dash. You have to pull the plastic box out to unplug the connector. So just cut off the back of the box off and run the connector through the hole and connect to the controller. This way you can remove the controller anytime you want. Also you can see the readout much easier then mounting it on the lower dash. See pics



by:

Took me about 10 minutes to install on my 2000 Chevy Silverado. Plug and play.



by:

Installed in my 2014 GMC Acadia in about 30 minutes. Used the GMC plug-in wiring adapter. No problems. Looks like it was made for that location.



by:

This brake controller is easy to install and program.



by:

I've been running the Tekonsha Primus IQ for just over a year now. Very pleased w/ it.
Simple set up & operation. I tow a variety of trailers w/ my '07 2500 HD including dump trailer w/ firewood, car hauler, and enclosed cargo trailer. The weights are anywhere from empty, to 5k. Very easy to adjust as conditions change. I borrowed a trailer from a family member and the controller picked up a short. Come to find out a wire was pinched from ramps being slid in on the underside. The digital screen notified me before loading it up and hitting the road. I would recommend this product.



by:

Works like a dream on my single axle 3200 lb travel trailer and my 2017 Toyota Tacoma. Like many of the other Tacoma owner reviewers, I mounted my Tekonsha Primus IQ controller in the small cubby to the left of the steering wheel and ran a couple screws up through the lower switch access to mount the bracket hidden inside the dash. Ended up looking like a factory install, exposing just enough of the unit to access the controls and read the display.



by:

This is a great controller, recommended by my trailer manufacturer. I actually don't know too much about it, how it works, etc. But it doesn't require much knowledge to use it. Install it like instructed by etrailer it just works. You can see the number goes up as you apply more pressure on the brake pedal, and the trailer stops with no problem. It's magic.
The only thing I wished they do is to supply a longer length of the thin wire to connect to the break line. For my 2013 CRV, the break line you need to tap into is on the left side of the steering column, if you want to install the break controller on the right side, the wire is a little so short; but you can make it, it's just a little tight. I want to install the break controller to the right side of the steering column because I don't want to accidentally bump into it every time I get in and out of the car. It's a great, the best product though.



by:

Installed quickly an easily into my 2009 GMC Sierra 2500HD by wiring up to the factory harness. Be sure to watch the etrailer.com video to see which wires need connected at the fuse box in the engine compartment! (Easy hook-ups, just need to make sure you see which ones get hooked up and where.)

And if you don't use your ash tray, these brake controllers squeeze nicely into the ash tray compartment/recess in the lower part of the dash. Makes a great place to keep most of the controller out of the way and it's easy to install (you will have to create 2x new holes in the plastic detachable controller mounting bracket but its very easy - you can see the mounting screws in the 'new' holes and the old holes go unused as shown in the photo).

Only had a trailer hooked up once, but the controller functioned as designed. I think the 'Boost' function will come in handy if I use a well-loaded trailer and need some additional stopping power from the trailer.



by:

Shipping was great. Stared at it for a couple of days before unpacking. The trailer connector mounting was easy with the holes almost matching the existing holes on my 2013 Toyota Highlander. The first four wires are a snap, they are just plugged into the existing four pin connector. I routed the two wire cable towards the front using ty wraps and improvised L brackets fixed to existing chassis screws.

I mounted the Circuit Breakers on the inside of the left fender making sure there was hood clearance (see photo). Then I hit a snag. There was no easy way to get the brake and 12V power wire to the brake controller inside the car. For grins, I goggled "brake controller video" for my car and came up with a video made by "eTrailer." (Thank you eTrailer) Three things from the video helped me: wire access from inside the car through the firewall, a place to mount the controller and how to locate the brake wire. After the installation I had 18" of two wire cable left over. The install took me about six hours. (I'm 71 and I took my time.)

A couple days later I connected the trailer for a test ride. The brake controller worked like a dream.

Things I liked: Retaining the four wire trailer plug setup next to the seven wire trailer plug. Controller display works but you don't have to look at it. The two wire cable was adequate for the job. Being an Engineer (retired) I worry about things like that.

Thing I didn't like: The mounting plate for the trailer plug is a little weak. A stiffer plate would have been better suited for me. and, oh yeh, somebody else to install it. ;=)




by:

IT WORKED PERFECTLY. This is my first time to purchase, install, and use a brake controller. Add to top it off, it was my first time to pull a trailer. It was on a Saturday, exactly six days before a scheduled tent-camping trip, when my wife found a good deal on a used pop up camper. The camper was equipped with electric brakes, so it was required to install a brake controller on my SUV. It was Sunday (next day) when I ordered the Tekonsha TK90160, along with the other necessary part numbers #118449, #A0500, #18136, #ETBC7. I was planning to take the parts to a shop to have it installed as soon as I received them. I was hoping I can get them on Tuesday, but UPS dropped it off to the local post office, which caused it to be delivered at 3pm on Wednesday afternoon. The shops that I went to either did not have an installer available, or were all booked for the week. I had to "take courage" and install it myself. I am so thankful that etrailer.com provides extensive videos of reviews, installation, and operation of the products that they sell. I made the connections as shown and hoped for the best. I picked up the camper on Thursday, and was sooo relieved that it worked perfectly. We took off on Friday and the camping trip was a success. We are looking forward to making more good memories with our camper. Thank you etrailer!



by:

Installation was straightforward with help from the online videos. I also installed the ETBC7 universal installation kit. At first I thought etrailer had shorted some parts, but it turns out that the 18140 bracket is sold separately. Had to take back the choice words I uttered under breath. Ended up mounting the provided bracket directly to the hitch with screws which was a little more difficult. As a safety measure--and a little on the overboard side--I also used a dremel to cut a small slit in the center of the provided bracket so I could attach a hose clamp similar to the one in 18140.
Space inside the cab for mounting the brake controller was tight.
Nonetheless, all works fine per my test meter. Don't yet have a trailer to connect, but meter checks out fine.



by:

This was a harness for a 2021 Porsche Cayenne. It is very hard to find support and info for this particular car due to its rarity. I had trouble finding the part, and then trouble locating the place to plug it in. Two different people at etrailer went above and beyond to help me. Can't say enough about that. In the end, it worked fine. Contrary to the written instructions, the connection is under the dead pedal in the footwell, not to the right of the steering column as the instructions say.



by:

2011 f150 3.5EB XLT superCrew. Easy plug and play install with the harness I bought also on etrailer, the problem was mounting. I hated the way the supplied mounts looked and didn’t want to bump into it. With some careful measuring and a hacksaw I was able to mount it inside the “plastic cup thingy” that fills the void where the factory controller would be. Attached pictures, the factory plastic cup thingy screws keep it locked in place and the supplies screws let’s you mount the controller into the plastic cup. Looks crooked with the white/silver plastic covering but it is aligned with direction of travel and level, also berey snug and mounted solidly.



by:

Installed this in my 2018 Tacoma TRD Off Road.
After removing the sill trim and Kick plate to find the Factory Plug.
I took the Bottom left dash down (3 Bolts) and some clips to gain access to the small cubby on the left of the steering wheel. Popped it out, trimmed it to fit with my Dremel and held the Unit in place with 3-M automotive trim tape. I only had to cut the sides of the cubby and a square hole for the plug to the unit. Looks Factory installed.
All in all it took a couple of hours to do. my truck has only 135 miles on it so I was extremely careful.
As you can see by the pics it's not in the way at all.
It could also be put in the center console but it has a wireless charger and I didn't want any Electronic interference or block access to my coffee cup holders.



by:

I replaced my old VW Atlas with a newer one (with tow package). So I needed a way to connect my old Takonsha P3. I bought the above harness, but when I went to install it, I realized the in car harness was micro and the one from etrailer was normal sized. So I couldn’t plug in the connector. I ended up having to cut the VW and etrailer cables, connect, and solder them. I mean, I haven’t seen the actual correct fitting cable and this one made life at least a bit easier. Just be aware, that if you have a micro connected VW side, you will still have to cut. I’ve bought many things from etrailer and they are great.



by:

I ordered and received my Tekonsha Primus IQ brake controller with wiring harness for my 2012 Ford Expedition. To keep from drilling mounting holes for the contoller, I double backed taped it to the top of the center console. In order to hide the wires, I had to strip some of the braided wire loom protective cover away so to be able to push the wires through the gap between the dash and console. The installation came out very clean and access to the controller couldnt be better.
Hooked up the trailer and took it for a drive. Within a few "stops" I had the brake system dialed in.Working perfectly.
PICTURES ATTACHED.



by:

I installed the Tekonsha Primus IQ Brake controller in my brother's 4 Runner just before he and his wife took their small (18 ft) camper on a month long trip out west. It did what was expected of it... Proportional brake control, with little adjustment after initial set up!



by:

Loved this thing on my 4Runner towing our 4,000 pound trailer over 8k miles last summer. Saved us at least twice on the Highway and nice to adjust the sensitivity for city.



by:

Primus Iq Brake Controller installed in a Mercedes Benz 2017 Sprinter.
The van's electronics interface with the Primus, and it can detect when the trailer brakes lock-up, which lights an dashboard indicator lamp. I used the Mercedes-specific plugs under the driver's seat and ran the cables through the battery box to the dashboard.



by:

I love these controlers. Can adjust perfectly and no jerking of the e brakes. Big on stopping whether it’s a hard or soft stop. No locking up of the trailer wheels.


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See what our Experts say about this Tekonsha Trailer Brake Controller

  • Which Way Should Diode Point on Highlander for Install of Brake Controller
    Yes you need the diode arrow to point towards the brake controller. That will allow the voltage to travel into the controller but not backfeed back on to the Highlander in any way. If you need a diode we have the part # RM-690.
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  • Brake Controller Plug Location on 2021 Jeep Grand Cherokee
    The factory brake controller connector on your 2021 Jeep Grand Cherokee is located under the dash behind the hood latch, as shown in the provided photo. Keep in mind, the connector will only be there if the vehicle has the factory tow package which includes the 7-way trailer connector at the rear bumper. If you have the tow package, to install the Tekonsha # TK90160 Primus brake controller on your 2021 Grand Cherokee you'll need the Tekonsha # TK93VR wiring harness. One end plugs into...
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  • 7-Pin Wiring Harness And Brake Controller For A 2024 Hyundai Santa Cruz
    Hello Evan, I can help clear this up. The Curt T-Connector # C68JR that you mentioned is for vehicles already equipped with the factory tow package. Meaning there will be an OEM brake controller plug already present under the dash and the brake controller would simply plug right in. So, if you do have the factory tow package, you can easily install the # C68JR wiring harness. Then for example, you can use a brake controller like the Curt TriFlex # C24VV, along with the Custom Wiring Adapter...
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  • Brake Controller Plug Location on 2021 Jeep Grand Cherokee
    The factory brake controller connector on your 2021 Jeep Grand Cherokee is located under the dash behind the hood latch, as shown in the provided photo. To install the Tekonsha item # TK90160 Primus Brake Controller, you were looking at on your Grand Cherokee you'll need the Tekonsha item # Tk93VR wiring harness. One end plugs into the controller, the other end into the factory connector under the dash.
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  • Where Would Diode Need to Install on Brake Controller If it Was Needed
    If you had a vehicle that needed a diode installed when installing a brake controller you'd need to install the diode like part # RM-690 on the red wire of the brake controller. This prevents the brake controller from back feeding onto the vehicle wiring when the manual override lever is slid.
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  • Installing Brake Controller on 2011 Jeep Liberty With Factory 7-Way Connector
    Is the 7-way factory installed? If so, it'll say MOPAR on the spring loaded cover for the 7-way socket. If so, Jeep kind of prewired the vehicle by running the brake output circuit from the 7-way up to the passenger cab and terminating it under the dash, usually behind and above the e-brake pedal. You'll be looking for a coiled blue or light green wire that might have a tag affixed to it that reads 'trailer brake'. Sometimes the wire is located under the carpet in this area or behind the...
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  • Parts Needed To Install 7-Way and Tekonsha Trailer Brake Controller On a 2022 Ford Bronco
    I recommend using the Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter # TK55VR to install the Tekonsha Primus IQ Trailer Brake Controller # TK90160 and 7-way on your 2022 Ford Bronco. This Kit includes the Tekonsha Plug-In Wiring Adapter # 22292. The Hopkins Tail Light Converter Kit # HM48895 should not be used on your Bronco as this puts the power strain on the factory wiring and does not uses a powered converter like the Tekonsha above. Also the Pollak Black...
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  • Location of Brake Controller Port on 2023 Jeep Grand Cherokee 4xe
    Hi Robert; it looks like your 2023 Jeep Grand Cherokee 4xe doesn't have a brake controller port since you don't have the tow package. This means hard wiring the # C27JR is your only option for installation. If have a plug and play wiring harness I would return it to whoever you bought it from.
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  • Recommended Trailer Brake Controller for 2010 Chevy Tahoe
    For your 2010 Chevy Tahoe the basic brake controller that will work well for you is the Tekonsha Primus IQ Trailer Brake Controller # TK90160. The wires are already present under the dash for this installation. If you prefer a controller that has more information readily available on a screen versus codes to decipher then use # 90195 instead.
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  • Brake Controller And Wiring For A 2022 Toyota RAV4
    To install the Tekonsha Primus IQ Trailer Brake Controller # TK90160 on your 2022 Toyota RAV4, you're also going to need to add a 4-pole # C56434 and a 7-way # ETBC7 trailer connector. Form here you're all set to successfully install the Tekonsha Primus IQ brake controller. I have also included a few installation videos for you to check out.
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  • Recommended Plug In Brake Controller for a 1996 Ford F-350
    For your 1996 Ford F-350, I recommend using the Tekonsha Primus IQ Trailer Brake Controller part # TK90160. The Tekonsha Primus IQ is an excellent option for you. It has multiple boost levels for different trailers, integrated safeguards that protect the vehicle/trailer/brake controller, and it will run continuous diagnostic checks to ensure everything is in order when you need it to be. If you take a look at the 3:23 mark in the attached install video, you can see the location of the...
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  • Brake Controller Solution for 2019 Volvo XC40 R-Design T5 with Stealth Hitch Package
    We have an easy brake controller solution for your 2019 Volvo XC40 that has the Stealth 7-way kit # SH36FR but we don't have a way to wire in the # TK90160 that you referenced. Instead we have the very easy to install Curt Echo Mobile part # C51180 which basically just would plug into the 7-way at the rear of your vehicle and once synced to a smart phone is ready to tow
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  • Trailer Connector for Towing Camper With 1995 Dodge Ram Pickup
    In order for your trailer taillights to function properly, you'll need to install a trailer wiring connector on your 1995 Ram. The two most common types of trailer connectors are the 4-pole and the 7-way. I'll link you to a trailer wiring FAQ article that shows the differences between them. If your camper has a 4-pole connector, you'll use part # C55317. The wiring harness will install as shown in the installation instructions that I've linked for you. If it has a 7-way, there'll be...
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  • Recommended Parts for Towing a 2020 Hiker Highway Basic with a 2024 Subaru Outback Wagon
    Thanks for reaching out, John! The etrailer Trailer Hitch Receiver # e25TR is definitely the hitch I recommend for your 2024 Subaru Outback Wagon, and then for wiring the best options are to use the T-One # 118467 along with the Universal Kit # ETBC7 - the combination of these wiring kits gets you everything needed to add a brake controller. For a brake controller, I highly recommend the Redarc Tow-Pro Elite # RED44FR because it doesn't take up space in your cab like the traditional "brick"...
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  • Brake Controller and Trailer Connector Recommendation for 2009 Chevy Express
    Since your 2009 Express (which was built across the street from our facility) doesn't have a factory 7-way, there isn't a plug and play trailer connector option. That's not the end of the world though, because the installation is pretty simple, and we can help you through it. First, you'll need a 4 pole trailer connector to get the lighting circuits. I'd recommend part # 118392. You'd then choose a brake controller. I'd highly recommend a proportional controller like the Tekonsha Primus,...
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  • Brake Controller Installation on 2019 Chevy Silverado 1500 LD
    When installing your Tekonsha Primus IQ # TK90160 with the # 3016 plug in adapter you will need to plug the adapter into the fuse box under the dash board- you should not need to remove and dash panels but you will need to remove the black cover on the box. I have linked installation videos of these parts on similar trucks that you can use as a guide when installing your brake controller.
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  • Comparing the Tekonsha P3 and Primus Brake Controllers
    I will be happy to compare the Tekonsha P3 # 90195 and the Primus # TK90160 for you. First, I will cover features that both controllers share. Both controllers: Will install the same in your vehicle Come with a universal pigtail Are proportional controllers (apply trailer brakes to the same amount as the vehicle is braking) Have automatic leveling Have limited life time warranties The controllers have several differences: The P3 has an LCD display. The Primus has an LED display The...
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  • My Brake Controller Is Turned All The Way Down But It's Still Too Much Braking For My Trailer
    Hey Terek, that doesn't sound fun at all. What brake controller do you have? I see you were looking at the discontinued Hayes Syncronizer 81725. If that is what you have, then there is only one adjuster wheel on this model, whereas some other controllers like Tekonsha Primus IQ Trailer Brake Controller # TK90160 have 2 - 1 for gain (power to brakes) and 1 for level of intensity. It sounds like the full voltage is getting sent to the brakes due to an issue. Either the controller is defective,...
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  • Should I Choose a Proportional or a Time Delayed Brake Controller for my 2008 Ford F-150 and Camper
    The proportional is with out a doubt the way to go. It provides better braking performance in all ways compared to the older time delayed technology. It will apply the brakes proportionally or similar to what the vehicle is doing. During emergency braking it applies them quite quickly in a normal stop they are more gentle and will stop applying them at stops. A time delayed controller applies the brakes the same every time regardless of the situation. this can lead to not enough braking...
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  • Recommended Brake Controller and Installation on 2021 Toyota RAV4
    I'd be happy to assist you with that. First, you'll want to choose a brake controller. You could go with a traditionally mounted brake controller like the Tekonsha Primus, part # TK90160. This controller would work perfectly for you, as long as you don't mind having the controller mounted to the underside of the dash to the right of the steering wheel, within easy reach of the driver. Some folks don't care for the appearance of a traditional style brake controller and prefer a remote mounted...
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  • Recommended Trailer Wiring and Brake Controller for 2018 Subaru Outback Wagon
    We have everything you need to install a 7-Way/4-Way connector and a trailer brake controller on your 2018 Subaru Outback Wagon as long as it is not the Sport model. The Hopkins Trailer Connector Socket # HM40975 that you referenced is designed to plug into an existing tow package port on certain Chevy, Ford, GMC, and Nissan trucks. This will not work on your Outback Wagon. If you do not have any connector installed yet on the vehicle, you will need to start with a 4-Way harness. I recommend...
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  • Recommended Brake Controller for 2014 Ford F-150 With Factory 7-Way
    The correct choice would be with factory 7-way, although the custom wiring harness is the same for the 4-way option. I highly recommend choosing a proportional brake controller for your 2015 F-150. Proportional brake controllers activate trailer brakes in proportion to your vehicle's braking action. The Tekonsha Primus IQ 3 # TK90160 is going to be the best choice close to the price point you're looking for. The # 22292 will plug into the factory port under your dash for an easy installation....
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  • Why Is My Tekonsha Primus IQ TK90160 Showing An o9 Error When Plugged Into A 2016 Ford Flex
    The o.9 on your Tekonsha Prims IQ # TK90160 does mean you have a bad ground connection. This will be due to the # 3034-P plug that you are using. As your 2016 Flex came with the factory tow package, you will actually need the # 22292 plug. The vehicle end plug will look the same on both these pigtails, but they will be pinned differently. With that being said, you have one of two options to fix this. You can return the # 3034-P and purchase a new # 22292, or you can re-pin the # 3034-P....
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  • Recommended 7-Way Trailer Wiring Harness with 4-Way and Brake Controller
    The Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter part # 22114 is the best option for a 2018 Ford Transit T350 (All Models with Single Rear Wheels) as it requires the least amount of modifications needed. That said, this comes with a 7-way trailer connector only so if you needed both a 7-way and 4-way you would also need the 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket part # HM40975 to replace the one that comes with the above. For a brake controller,...
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  • Recommended Hitch and Wiring Harness for a 2016 Audi SQ5
    I would be happy to help you. For a Draw-Tite Hitch on your 2016 Audi SQ5 you will want item # 75940. This hitch is custom fit and bolts directly to your Audi's frame with included hardware. To add a brake controller you will need two separate wiring harnesses because you will need to add a 7-way to plug the trailer into. The first harness you will need is the Curt T-Connector item # C56404. This custom-fit T-connector plugs into your vehicle's wiring harness, which is located in your...
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  • Is There Plug-In Wire Harness For Prodigy P3 Brake Controller on 2020 Audi Q7 w/ Tow Package
    I certainly don't blame you for not wanting to splice any wiring, and I can verify for you that there is indeed a plug-in wiring harness for the P3 brake controller and your 2020 Audi Q7. What you will need are the following: - Tekonsha Prodigy P3 Trailer Brake Controller # 90195 - Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers # TK22FR You made a superb choice with the Prodigy P3 because it combines a high level of performance with reliability and ease of use. And since...
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  • Redarc Plug and Play Brake Controller Adapter for a 2021 Audi Q7
    Since your 2021 Audi Q7 has the factory tow package you do have a brake controller port but Redarc didn't make a specific plug and play adapter for it. There is a work around that will let you install your Redarc Tow Pro Liberty item # RED24FR or Elite item # RED44FR without having to cut or splice wires. You can use the following two adapters connected together instead of having to hardwire: Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers item # TK22FR Redarc Tow-Pro Wiring...
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  • Parts Needed to Install Tekonsha Brake Controller in 2021 Porsche Cayenne with Tow Package
    All you need to install a Tekonsha brake controller like the P3 part # 90195 in your 2021 Porsche Cayenne with the tow package is the install harness part # TK22FR and you'd be set Tod. This directly attaches the controller to the factory wiring of your Cayenne and is only thing needed.
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  • Parts Needed To Install Tekonsha Prodigy P2 On a 2009 Porsche Cayenne With Tow Package
    I have linked the Technical Bulletin below for installing a Tekonsha Prodigy P2 # 90885 on your 2009 Porsche Cayenne with the factory tow package. You will need the Plug-In Wiring Adapter # TK22FR along with the Relay # BL63VR to wire the connector as seen in the bulletin by splicing into the red wire on the adapter.
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  • Does 2018 Volkswagen Atlas without Tow Package Come with Brake Controller Wiring
    Our understanding of the 2018 Volkswagen Atlas that does not come with the tow package is that the wiring isn't present from the front of the vehicle to the back. There might be some of the brake controller wiring behind the panel like you mentioned but we could only really recommend you test the connector for voltage with a tester like part # PTW2992. You might get lucky and the power wire and stoplight circuit are present there but it's hard to say. You could use the # TK22FR plugged...
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  • 2018 Audi Q7 with Tow Package Brake Controller Recommendation
    I have the perfect solution for you with the Redarc Tow-Pro Elite # RED44FR and Plug-In Wiring Adapter # TK22FR. To connect the Redarc to the adapter you will cut off the connector on the adapter that has the pins in a row instead of a box and then splice the pigtail from the Redarc to the wires on the adapter color for color. I really like the Tow-Pro Elite because it has proportional and time-delay braking options for different towing situations plus everything about the controller can...
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  • 2018 VW Atlas 7-Pin Round Vehicle Connector and Brake Controller for Use w/ a 6-Way Adapter
    Thanks for the picture! It looks like your 2018 VW Atlas has been wired for a 7-way and has everything but the actual 7-way connector. To use the Hopkins Endurance Multi-Tow Trailer Connector Adapter - 7-Way to 6-Way, 5-Way or 4-Way item # HM47570 you will need the Hopkins Endurance Quick-Install 7-Way Trailer Connector item # HM40940. Both of these combined will give you a 6 pin round and a 4-pin flat connector. I have linked a review video that you will want to watch when connecting your...
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  • Do I Need A LED Bulb Out Adapter When Using A Brake Controller On my 2012 Porsche Cayenne?
    The Curt 7-Way Trailer Adapter # C57003 is only needed for trailers that have LED taillights. There are internal resistors that will make the computer on your 2012 Porsche Cayenne sense that it is connected to a trailer as the LED light do not draw as much power as incandescent bulbs. If your trailer does not have LED taillights then the adapter is not needed. I recommend using the Tekonsha Prodigy P3 Trailer Brake Controller # 90195 with the Tekonsha Plug-In Wiring Adapter # TK22FR on...
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  • Brake Controller Recommendation for 2019 Volkswagen Atlas with Factory 7-Way
    Your 2019 Volkswagen Atlas has brake controller wiring but it does not currently have a brake controller installed in it. Rarely do vehicles have factory brake controllers and it's basically only trucks that do. Reason being lighter duty vehicles typically tow trailers without brakes so they aren't needed as often. So you'd need a brake controller like the Brake EVN # TK63VR which works really well and is very reliable and the install harness part # TK22FR which is custom fit for your...
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  • Can Redarc Tow-Pro Liberty Be Installed In 2022 Porsche Cayenne?
    You sure can! You'll just need the following harness and adapter to get the Redarc Tow-Pro Liberty # RED24FR installed in your '22 Porsche Cayenne: Adapter # 331-TPH-017 Brake Controller Harness # TK22FR This will allow for a plug-and-play installation in your vehicle.
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  • Troubleshooting "Power Loss" Error Message Installing Tekonsha Prodigy P3 on 2019 VW Atlas
    Yes, it does sound like the issue is on your 2019 Volkswagen Atlas but I do recommend checking your Tekonsha Plug-In Wiring Adapter # TK22FR is wired correctly. This could cause the issue you are getting with the Tekonsha Prodigy P3 # 90195 as well. You can see where the wiring goes into the connectors on the product page. Be sure the terminals are fully seated as well and not pushing out of the connectors. Then you should start with the ground side as that wire will be more easily traced...
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  • Brake Controller Recommendation for 2017 Volkswagen Touareg
    For your 2017 Volkswagen Touareg the Prodigy P2 brake controller part # 90885 would be an excellent choice as it is widely considered to be the best controller that is also very reliable. To install it you'd just need the part # TK22FR which plugs into a factory port on your vehicle since it has the factory 7-way. The P2 is a proportional brake controller which means that the harder you apply the vehicle brakes the harder the trailer brakes will apply.
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  • Finding Stoplight Circuit on 2018 Volkswagen Atlas for Brake Controller Install
    Your 2018 Volkswagen Atlas has factory brake controller wiring that you can use the part # TK22FR to attach to which has the stoplight circuit covered. Normally to pull off what you are wanting to do you would use a circuit tester like the part # PTW2993 to test all of the wires that run to the stoplight switch till you find one that has voltage only when the brakes are applied. We haven't installed a brake controller on your vehicle yet so we don't know the wire color or how to get through...
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  • Recommended Tekonsha Brake Controller For A 2017 Volkswagen Touareg
    Hi Vernon, For your 2017 Volkswagen Touareg I recommend the Tekonsha Prodigy P3 Trailer Brake Controller # 90195 along with the Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers # TK22FR. The P3 is one of the easiest brake controllers on the market to use and has a bunch of added features, making it an industry favorite. With the plug-in wire harness the installation process will be fast and simple, no cutting or splicing wires.
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  • Parts Needed to Install Brake Controller on 2006 Volkswagen Touareg TDI
    Hey David, so the correct components you'll need will only come from a VW dealer and we can only help you find the right part numbers. Looks like 1 connector housing (#1J0-972-782) and 2 wire/terminal assemblies (#000-979-228). Check out the attached help article on this for you to check out as well.
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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Sabrina W
Written by:
Sabrina W

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