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  1. Trailer Brake Controller
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  3. Electric
  4. Electric over Hydraulic
  5. Proportional Controller
  6. Under-Dash Box
Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles - Proportional

Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles - Proportional

Item # 90885
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Our Price: $139.94
Trailer Brake Controller
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Shipping Weight: 1.18 lbs
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Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles - Proportional Up to 4 Axles 90885
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Product Expert Kathleen M

Is this right For you? Product Expert Kathleen M says:

Yes, if you:

  • Tow a trailer or camper several times a year
  • Often use the manual override while towing to feather the brakes
  • Trust a brake controller backed by years of reliable use

No, if you:

  • Have limited leg room in your cab that you can't spare for a bulky brake controller
  • Swap trailers often and want presets so you don't waste time adjusting settings
Proportional brake controller automatically levels when mounted within a 360-degree vertical range. Includes digital display, 3 boost levels, battery protection and continuous diagnostics. Easily transfer between different automobiles. Lowest Prices for the best trailer brake controller from Tekonsha. Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles - Proportional part number 90885 can be ordered online at or call 800-298-1624 for expert service.
  • All Info
  • Reviews (2152)
  • Q & A (0)
  • Photos
  • Why etrailer?

Tekonsha Trailer Brake Controller - 90885

  • Electric
  • Electric over Hydraulic
  • Proportional Controller
  • Tekonsha
  • Under-Dash Box
  • Up to 4 Axles
  • Automatic Leveling
  • Dash Mount
  • 360 Degrees
  • LED Display

Proportional brake controller automatically levels when mounted within a 360-degree vertical range. Includes digital display, 3 boost levels, battery protection and continuous diagnostics. Easily transfer between different automobiles.


  • Brake controller activates trailer brakes in proportion to your vehicle's braking action
    • Automatically adjusts trailer's braking based on deceleration of tow vehicle
    • Activates immediately - no pausing like with time-delayed brake controllers
  • Automatic-leveling ability - internal sensor detects deceleration even if controller is not mounted flat
    • Position at any angle up or down in the vertical plane
  • 3 Boost levels let you adjust initial braking power and aggressiveness
  • Continuous diagnostic check alerts you to any potential problems
  • Integrated safeguards protect your vehicle, trailer and the controller
    • Minimizes drain on car battery by drawing only 3.6 milliamps when not in use
    • Prevents trailer brakes from overheating by reducing power output to them during prolonged stops
    • Defends brake controller and trailer breakaway systems against shorts
  • Auto-dimming, blue LED display is easy to read
    • Automatically adjusts screen brightness based on the current lighting conditions
  • Built-in, rotary-style manual override lever
  • Quick-disconnect feature lets you easily remove and store the control when not in use
    • Replacement wiring harness (sold separately) and replacement bracket (7686 - sold separately) required to move the controller from one vehicle to another
  • Plug-in, vehicle-specific brake-control adapter (sold separately) can be used for certain applications to reduce installation time


  • Application: trailers with up to 4 axles (8 brake assemblies)
    • Designed for use with electric or electric-over-hydraulic trailer brakes
  • Dimensions: 3-1/8" wide x 5-1/8" long x 2" tall
  • Length of hardwire pigtail: 30"
  • Mounting: 360-degree vertical plane operating range
  • Limited lifetime warranty

Proportional Braking

With a proportional brake controller, you can get heavy-duty emergency braking, general braking or slow-to-an-idle braking for your trailer automatically. The intensity with which your trailer brakes are activated and the rate at which they are applied are dependent on the deceleration of your tow vehicle. This means that, unlike time-delay controllers - which send the same amount of preset power to your trailer brakes every time - proportional controllers are able to adapt to every braking situation differently. So, if you slam on the brakes in your truck, your trailer brakes will activate with that same extreme intensity. And if you merely slow down as you approach a red light, your trailer will gradually brake in the same manner. Just set the initial power level, select a boost setting, and you're good to go.

As long as the P2 controller sits level on a horizontal plane and is pointed in the direction of travel, it will sense - via an internal inertia sensor - how your tow vehicle brakes. This inertia-based sensor responds to the deceleration of your tow vehicle as you brake by signaling the controller to send out enough power to your trailer brakes so that they are activated with an intensity that matches. The result is uniform braking across your towing setup. No push-pull action - just smooth, proportional braking every time.

Power Boost for Heavy-Duty Towing

Aside from smoother, more efficient braking, Tekonsha's P2 brake controller also offers a boost feature that gives you more initial braking power for those times when you're towing heavy loads. You can switch boost levels so that the power output to your trailer brakes automatically starts out at either 14 percent or 28 percent of the predetermined power setting.

So, if you boost the initial power so that your trailer brakes activate with 28 percent of the overall intensity at the start, the brakes will reach maximum braking faster. This is particularly beneficial if you are towing a heavy load because the intensity required to stop that load may be far greater than that needed to halt your vehicle. Therefore, sending out more initial power to the trailer brakes - and causing them to reach maximum braking faster - allows you to better control the trailer so that it doesn't push your tow vehicle before coming to a complete stop.

If your trailer weighs less than your tow vehicle, no boost is needed. But if you wish to set the boost so that your trailer leads the braking of your towing setup, you can select level B1. The following table gives an indication of when you might use the different boost levels and the power increases that they offer.

Approximate Gross Trailer WeightBoost LevelIncrease in Initial Power Output
Less than tow vehicle GVWB114%
Equal to tow vehicle GVWB1 or B214% or 28%
Up to 25% more than tow vehicle GVWB2 or B3*28%
Up to 40% more than tow vehicle GVWB3*28%

*Both B2 and B3 offer a 28-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.

Safety Features

The Prodigy P2 offers advanced safety features to prevent damage to various components of your towing setup. Integrated reverse battery protection shields the brake controller and your trailer's breakaway system from shorts. When the P2 is not in use, it will be in power-saving mode. In this setting, the power draw falls to only 3.6 milliamps, minimizing drain on your vehicle's battery.

When you stop at red lights, or any time that your truck and trailer are at a standstill with the brakes applied for more than 5 seconds, the P2's "hold" feature will activate. When this happens, the power output to your trailer's brakes will be reduced to just 25 percent of the preset power setting so that the brakes will not overheat.

If ever there is a time that you need to brake your trailer separately from your tow vehicle - when traveling down a steep incline, for example - the manual override lever is easily accessible. Pushing this lever engages the brakes on your trailer with full power. In addition, when you activate this override, the brake lights on your trailer will illuminate, properly warning those behind you of the braking action of your rig.

In addition to all of those safety features listed above, the P2 offers diagnostics such as:

  • Open ground
  • Overload
  • Output short
  • Power loss
  • No trailer connection

Automatic Leveling and Simple Installation

The self-leveling feature of the P2 ensures that the brake controller continues to function even as you drive up steep hills or through the mountains. Simply mount it in your cab at any vertical angle, and the controller will level itself automatically thanks to its 360-degree rotational range.

Correct P2 mounting360-Degree P2 mounting

Note: The P2 must be mounted on a level horizontal (side-to-side) plane and must be lined up with the direction of travel for the internal sensor to function properly.

Installation is a snap. After mounting the P2 unit in your cab using the included pocket mount, hardwire one end of the included pigtail harness directly into your vehicle. The other end plugs into the brake controller. To transfer the P2 to another vehicle or to remove it for storage, just unplug the unit and slide it out of the pocket mount.

Installation Accessories

For even easier installation, a vehicle-specific wiring adapter (sold separately) is available for most newer trucks and SUVs. One end of the custom adapter plugs into your vehicle, and the other end plugs into the controller - no hardwiring required.

Note: If a custom brake-control wiring adapter is not available for your vehicle, one of the following will be required:

20-Amp circuit breaker (9506P - sold separately) for 2- to 4-brake applications

30-Amp circuit breaker (38630 - sold separately) for 6- to 8-brake applications

See also's exclusive 7- and 4-way brake-control installation kit (ETBC7 - sold separately) if you don't already have a 7-way plug at the back of your vehicle.

90885 Tekonsha Prodigy P-2 Proportional Trailer Brake Control

Replaces Tekonsha 90185

Installation Details 90885 Installation instructions

California residents: click here

Customer Reviews

Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles - Proportional - 90885

Average Customer Rating:  4.9 out of 5 stars   (2152 Customer Reviews)

Proportional brake controller automatically levels when mounted within a 360-degree vertical range. Includes digital display, 3 boost levels, battery protection and continuous diagnostics. Easily transfer between different automobiles.

- 90885

Install was a breeze and I am looking forward to doing business with e-trailer again soon. Installed on a 2010 Cadillac Escalade. Going to be pull a C-24 Cutwater with electric over hydraulic brakes.

- 90885

After hearing horror stories at dealer, had controller installed on new Jeep gladiator (trailer dealer said good choice of controller). Towed 16' airstream to SW FL from NV thru CA in Fed/Mar of this year. Total of 8,000 miles. Absolutely needed the controller in Utah mountains driving down to Vegas. Stupidly jerked steering wheel going downhill but controller worked perfectly and keep me on the road. Scary but learned a lesson. So glad bought from Thank you.

FGM - 10/19/2021

- 90885

Installed this in my 2015 Jeep Wrangler Unlimited Sport. I thought that I would add some input on installation that would help others. I found a way to route the power distribution wires in the frame of the Jeep that did not require the use of a fish tape. If you look at the frame just behind the rear tire you will see a hole in the face of the frame. Start pushing the wire bundle foreword. It will rise up and over the U shaped frame portion of the rear axle and then down along the passenger compartment area. About there, you will be running out of pushing stiffness. Look for the wire bundle to appear at a similar hole in the frame in that area. Grab it a and pull out approximately 4 feet and then push it right back in the same hole going foreword. This time you will look for the wire bundle to appear at again a similar hole just foreword of the driver compartment. Now is the time to grab it and start heading up to the engine compartment outside the frame. Do the same procedure for the wire going aft for the plug end of the installation. For the wires going through the firewall, Jeep has conveniently added a nice foam lined hole to route wires through. You will see this hole position in the attached photo with a green wire coming through. The plastic cover around the steering column pulls down from the top and hinges at the bottom. Remove the metal plate with two bolts to get to the brake switch. Twist and pull the brake switch out foreword and go for the brown stripped wire as your brake circuit. Do order the LONG frame bracket adapter for the switch plug at the rear. To drill the steel for the supplied plug bracket just takes too long. Now that you have it installed you will notice that the power will remain on the unit after you turn the key off. Don't sweat this as it will not stay on long. I doubt a few milliamps draw is going to kill your battery!

Working great would recommend to all.
Jim - 10/29/2016

- 90885

Easy installation on my Ford E-450 Bus! Now I can pull my travel trailer! Thanks!

- 90885

This is the second one I purchased. The first was 10 years ago and installed in my 06 GMC. It has worked flawlessly allowing for safe and smooth stops from normal braking to a few of the panic stops that had to made over the years. The new owner of the truck likes the way it works too. I have multiple trailers and with one initial setup on the lightest trailer was able to tow all of them without changing anything but the boost setting to compensate for the different trailer weights. When needing for a controller for my 07 Silverado there was no other unit that would fill the bill. This P2 looks the same except for the blue display instead of the red. The install took 20 minutes using the direct fit cable ordered with the controller. Setup was easy as with the first unit. I wanted the placement above the parking brake pedal so the OBD II connecter had to be moved. I did the same with the 06 GMC. It is a comfortable place to reach and it keeps the light away from the passenger's eyes at night. As good as the Tekonsha controller is it is even a sweeter deal buying it from etrailer. The quick shipping, excellent pricing and knowledgeable staff are second to none in customer service.

Tekonsha recently updated the Prodigy P2 with an auto-dimming feature for the display so no more worries about being blinded at night.
-- Etrailer Expert Mike L - 02/14/2019

- 90885

The online video showing the installation of the Prodigy P2 trailer brake control into a 2011 Ford Ranger was excellent! It made the installation into my Ranger simple and straight forth. I have yet to hook up to my travel Trailer and adjust it for brake setting, but all readout displays thus far are as stated in the instructions. Having previously installed the trailer connector, I did not purchase the installation kit and in retrospect for cost effective and simplicity would recommend anyone to purchase the kit along with the controller. I believe I am going to be very pleased with this product. Thank you

great! thank you for an excellent product!
Larry L - 04/28/2016

- 90885

Just installed it. My Camper is a restored 1966 Frolic with electric brakes that I am getting checked out tomorrow. Unit installed fine on my Chevrolet Colorado and the actual installation video with the Colorado was perfect! Thanks - I will recommend it to a friend who needs to do the same on his Silverado.

- 90885

very nice controller, very smooth and you don't have to mount it flat!! e trailer is the best company i ever worked with. they have pics, video, email support(exellent) and just flat out make it easy for you to do it yourself instead of paying some dirt bag $300 to install at your local trailer shop. i also installed kit #ETBC7 and once agian it was awesome. COMPLETE with DETAILED directions. i'm not a mechanic or hack employee at local trailer shop....BUT dealing with etrailer and there parts made my install very easy and CLEAN!!!

Your products are awesome. Ive had zero issues with it and 5 of my friends purchased and installed the same set up in there trucks. Thanks again for the great products and excellent support.
Matt - 03/05/2015

- 90885

Haven't connected it to the camper yet but the logic and display is the same as the 10 Y/O Tekonsha controller in the previous tow vehicle. The controller looks like it was made for the Ukraine army to use as it appears bulletproof.

- 90885

I didn’t have a good location that was reachable while driving so I mounted the controller on top of the dash. I leveled the bracket with a spacer and ran the harness by an access panel. I used about 70’ of the duplex wire due to running the cable to front and then back to the house batteries inside the coach. The access panel made it easy to make the connections and run the wires through the firewall. I mounted the 40 AMP and 30 AMP circuit breakers up front in the main fuse panel box. I drilled a hole through the box and firewall to run the wires from the brake controller to the breaker and to the blue wire for the tow connection at the back of the coach. I ran the battery connections to my house batteries up front instead of using the engine batteries in the back. I found the brake connection wire under the coach in front directly below the brake pedal. I mounted the converter in a beam in the back with lots of zip ties

For ford ranger 2010 and perhaps other years:Be aware that the video contains the wrong instruction for the 2010 ranger. In wiring the brake light wire, the switch shown being tapped into gives reverse braking sensing, that is, it is 12 when the brake is not applied, but 0v when it is. I found elsewhere that the correct wire is the 2nd connection on the 5 pin plug that rides on the brake itself.This is no comment on the original video, which was excellent, and referred to the 2011 ranger model.
-- comment by: Scott M - 08/15/2013

Wire colors can and do change often. We offer the colors that we find in our videos as a starting point, but even if you have a 2011, it is best to double check and make sure to positively identify the wire color first.

-- Etrailer Expert Patrick B - 8/19/2013

- 90885

Havent used it yet but was a breeze to install and everything seems to work well.

- 90885

Used in conjunction with harness kit for my 2002 tundra, this year has no provisions for towing trailer with electric brakes. The controler itself has proven itself nicely, with no issues with installation or use, adjust easily. The mounting location I chose may have some slight interference issues with legs on taller people, but I have not had any @ 5'11". The truck is a midsized so room is more limited. I'm towing a tandem 14' trialer with 4 seat RZR, tracking and stopping is perfect, even under hard breaking.

- 90885

Janet was very helpful in answering my questions and helping me select the correct trailer brake controler for my 2007 Nissan Frontier. Didn't need to cut and crimp wires, it was all plug and play. I needed it ASAP and got it in two days. It's good to have customer service in the U.S. and not have to struggle with foreign accents. Thanks etrailer!

- 90885

Unfortunately you use USPS for shipping. Totally unreliable. No tracking showed up until Sunday. Up until then it showed they were waiting for the merchandise from you. So, I figured it was lost and since I needed it I ordered another controller from Amazon and it arrived on Saturday. If you consider giving the purchaser (me) the option of shipping with UPS, I will consider future purchases.

I will have our customer service team reach out to you.
-- Etrailer Expert Jenny N - 02/11/2022

- 90885

Works great! No issue hooking up and it plugged directly into the harness I bought from etrailer also so no need to splice wiring or anything!

- 90885

Easy to install with wiring harness for my truck separate part.

- 90885

This controller was for our Escape19 trailer. So far this year we've traveled 10,000 miles circling the US. Since this is our first trailer, I haven't tried any other controllers but this one worked great. When we bought this in Sept 2020, we were lucky to get one because of the supply chain problems. I recently had the trailer and vehicle serviced and the results say that this was a good product.

- 90885

Love dealing with these guys. So helpful, they know their stuff. We needed the connector and a brake controller for a 2018 motorhome. Their web site they had a video of where to find the connection site in the RV and they had the right parts at a great price. They also had the all the little odds and ends (windshield cover, sink stopper, new bath faucet, led light, etc.,) that we needed. The parts were delivered within a week.

Still on the road and everything still works just like it should. Good products and good service.
Petra - 04/19/2021

- 90885

Great Brake Controller, used it with the Universal Install Kit for Brake Controllers and No-Drill Mount Bracket, Short - 18140. It only took me 2.5hrs to have it fully installed in my Jeep Wrangler Unlimited 2013. Videos were great. Also having some 1/4in water tubing helped for phishing wire thru frame. Wish I had watched the video a couple of times before buying and also purchased the extra wire to go from the battery to the brake controller, but had extra wire from another project that worked. This brake controller works great as we tow a <3500lbs Travel Trailer with our Jeep. Comes with a great card that helps with settings, keep it in the glove box for future reference.

- 90885

I installed this model 90885 Prodigy P2 Brake Controller using the ETBC7 Brake Controller Wiring Kit on my 2007 Dodge Nitro. On a scale of 1 to 10, I consider myself about an 8 where it comes to automotive mechanical and electrical work. I also strive to get as close to perfection as possible. To do the job right, it did take some time and it did require paying close attention to the directions for both the wiring kit and the controller. However, the directions were "right on", and all the needed "goodies" to do the job were furnished. My hat is off to ETRAILER for the informative videos they provide and their customer service, which includes very quick shipments of their products.

- 90885

I recently bought a 2018 Chevy Silverado LTZ. It was equipped with a towing package but no brake controller. Not wanting to alter the interior of the truck too much, I called etrailer for advice. Robert S was very helpful. He suggested the Tekonsha Prodigy P2 brake controller and jumper wire that I was able to hide neatly under the dash using an existing screw. I have been very pleased with etrailer and their suggested product.

- 90885

I purchased this controller for my 2005 Jeep TJ. We're towing a 2014 Forest River FLagstaff MAC and, after doing much research, we decided that this unit (along with the universal installation kit ETBC7) was the right one for us! Both the controller and install kit contain everything that you'll need for a clean, professional-looking install! The install took around 2 hours (in my driveway) and the controller works flawlessly! This setup is perfect for a Jeep TJ, the controller fits nicely to the lower left of the steering wheel (out of the way) and the trailer connection is a bolt-on setup that attached to my Reese towing hitch! The trailer connection (with the install kit) has both a 4-pin connection and a 7-pin connection so there is no need for adapters! It is truly a "plug and play" setup!! As far as ordering and customer service goes, this was one of the smoothest transactions I've had in quite some time! There are numerous photos and install videos that will guide you through the install. We'll definitely start with for our next purchase like this!

- 90885

Great product, very easy install especially with the OEM harness. In about an hour had it installed and trailer set up with controller. Thanks, Greg

Great!! smooth braking when I haul my tractor and other materials
Greg H - 08/30/2019

- 90885

Upgraded to a Prodigy 2, from the Original Prodigy in my old truck. Easy to install with the Factory harness pigtail. Simple basic operation. Opted for the Prodigy 2 for the simply. Single lever quick activation, if needed. Liked the single knob operation and clean appearance of the Curt, but being in the correct 'mode' for emergency application of trailer brakes seems cumbersome.

Working like a charm. Very pleased with operation.
Dennis W - 04/19/2021

- 90885

This is the second P2 brake controller. Smooth dependable breaking. Item arrived quickly and price is very good.

Show More Reviews

Ask the Experts about this Tekonsha Trailer Brake Controller

  • What Adjustments are Needed when Installing the Tekonsha Prodigy P2 Brake Controller # 90885
    A proportional brake controller like the Tekonsha Prodigy P2 Brake Controller, part # 90885 applies power to the trailer brakes in proportion to the vehicles braking action. The setup of a proportional brake controller is a simple procedure. When the brake controller is installed in your 2010 Ford F-150 you will need to first adjust the power to the trailer brakes. The steps to adjust the power are as follows. 1. Connect trailer to tow vehicle. 2. With engine running, hold manual full...
    view full answer...
  • Weak and Pulsing Trailer Brakes when Using Tekonsha P2 Brake Controller on a 2012 Skyline Trailer
    On the P2 brake controller # 90885, the SH indicates that there is a short on the blue wire that is output to the trailer brakes. The oc might actually be nc or 00. NC indicates the trailer is not connected and 00 means the power setting on the controller is set to zero. For the SH the most likely cause is a dirty trailer connector on either the truck or trailer side or both. Check the connectors for dirt and corrosion. Corrosion can also build up where the wires attach to the connector....
    view full answer...
  • Troubleshooting No Trailer Brake Lights When Head Lights On After Prodigy Brake Controller Install
    That sounds like a ground problem on your trailer. With the excessive draw of your headlights being on and then applying the brakes to turn on the rest of the taillights the insufficient ground problem rears it's ugly head and prevents the brake lights from illuminating. I would check the grounds on the tail lights of your trailer and make sure they are making a good connection to a clean metal surface. A lot of taillight assemblies ground through the mounting hardware. If this is the...
    view full answer...
  • Prodigy P2 Installed on 2010 Toyota Tundra Remaining On After Vehicle Shut Off
    The Prodigy P2 will go into a sleep mode after between 20-30 minutes after the vehicle is shut off. After that time, the display should be blank. The amount of voltage applied to the vehicle battery from illuminating those LEDs during that period is so slight there is really no chance of your battery being drained, however you could certainly unplug the connector from the rear if you wish. If the two LEDs remain lit after a 30 minute period, you can first try resetting the controller by...
    view full answer...
  • Making Connections Under the Hood on a 2003 GMC Sierra for Brake Controller Installation
    Yes, there could be some additional connections that will need to be made under the hood of your 2003 GMC Sierra to make everything fully functional. I have included a link to our help article that explains the installation and the under the hood connections that you may need to make. You might find that you will need to make all the connections mentioned or you may only need a fuse. No matter what all is needed on your specific truck the help article covers it.
    view full answer...
  • PL Error Code on a Prodigy or P2 Trailer Brake Controller on a 2001 Ford F-350
    The PL error code on the P2 # 90885 and Prodigy 90185, indicates that the power was interrupted while the brake pedal was pressed. This means that when you apply the brakes the voltage is not getting back to the trailer brakes. This can occur for a number of reasons. First check the brake controller wiring and all of its connections to the vehicle. A bad splice or corrosion could cause this error. Then check the wiring going back to the trailer connector for any corrosion or breaks in...
    view full answer...
  • Brake Controller Installation and Recommendation for a 2014 Chevy Suburban
    To install a brake controller in your 2014 Chevy Suburban you will need to connect the wires of the controller to the 4 wires under the dash of your vehicle. You will also need to make the connections under the hood of the vehicle as well. For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake controller because of how well it works and how easy it is to setup. This is a proportional brake controller that senses the amount...
    view full answer...
  • SH Error Message Flashing on Display on Tekonsha Prodigy P2 Brake Controller # 90885
    The SH error message on your Tekonsha Prodigy P2 Brake Controller # 90885 means that the controller senses a short circuit. You can reset the controller by unplugging it from the harness that connects it to your vehicle and waiting about 60-seconds. During this time disconnect your trailer. You can then plug it back in. If you again see the SH short-circuit message then you'll need to troubleshoot your wiring on the vehicle, looking for the cause of the short circuit in the wiring between...
    view full answer...
  • Troubleshooting Brake Controller that Does Not Want to Lock Up Wheels as Power is Increased
    The 6 level is a great starting point for setting up the output level for the P2 # 90885. But in a case like yours you would need to keep increasing the output until right before lock up. If that means going past 8.3 then that is what you would need to do. If you can't get them to lock up even with the controller all the way adjusted then it could be that your brake assemblies are in need of adjustment. To see how to manually adjust trailer brake assemblies check out the video I attached,...
    view full answer...
  • Would Charging Vehicle Battery While being Flat Towed Cause RV Battery to Drain Toad Battery
    If you ran a wire from the 12 volt accessory circuit of the 7-way on your RV to the positive post of your RV would not end up drawing from the HHR. Since the alternator of your RV would be keeping the charging system of the vehicle with higher voltage than the battery of the HHR the voltage would only be going to the HHR battery while flat towing. A diode would not be necessary.
    view full answer...
  • What is Needed to Install Tekonsha Prodigy P2 Brake Controller on a 2008 Chevrolet Trailblazer
    Since your Trailblazer has the factory installed towing package, you will need no additional parts to install your Tekonsha Prodigy P2. The brake controller would wire directly to the tow package wiring located under the dash, which can be accessed by lowering the panel directly below the steering column. The tow package wires are taped to the wiring harness to the left. The red and white tow package wire attaches to the black wire on the the brake controller, the black tow package wire...
    view full answer...
  • Brake Controller Wiring for a 2007 Chevrolet Suburban
    The 2007 Suburban does not require a wiring adapter. The tow package wiring is easily accessible and would wire directly to the brake controller. The wiring is located above the emergency brake pedal, and is taped to a wiring harness. Look for a white tag hanging off of the wiring. The four wires are red, dark blue, light blue and white. The red tow package wire connects to the black wire on the controller, the dark blue tow package wire connects to the blue brake controller wire, the light...
    view full answer...
  • 12-Volt Accessory Power Feed on 7-Way Trailer Connector Not Working on 2006 Chevy Silverado 2500HD
    If you aren't getting power on that connector pin on the 7 way, take a look at the power distribution box under the hood. Once you remove the cover, you will see two posts on the side of the box closest to the motor. The post closest to the front should have a wire attached to it. Near the post, there should be a 40 amp fuse in place to fuse the circuit. Take a look at the FAQ article I've linked for you. In step 'F' shows the location of the post and the fuse that I'm talking about....
    view full answer...
  • Which Brake Controller is Compatible with a Vintage 1963 Camper Behind a 2006 Ford Explorer
    As long as your trailer has modern brakes, you should have no problem using a modern style brake controller. I recommend the Tekonsha Prodigy brake controller, part # 90885. It is a proportional controller so it will keep your trailer braking more in sync with your vehicle.
    view full answer...
  • Brake Controller Wiring on a 2008 GMC Sierra
    There will be a bundle of wires above the electrical junction box underneath the dash. The bundle will have 5 wires, red, dark blue, light blue, white and orange. The orange wire will not be used. The wires should be connected as follows: Truck - Controller Red - Black Dark Blue - Blue Light Blue - Red White - White I have added links to a help page and a video showing a brake controller install on a 2008 GMC Sierra with the Tekonsha Prodigy brake controller.
    view full answer...
  • Journey HD Brake Controller Putting Out Constant 12 Volts
    If you are only getting input to the controller on that red wire when the brakes are pressed, but you are getting constant output on the blue output wire, your controller is bad and must be replaced. I'd recommend a proportional Brake Controller, such as the Tekonsha Prodigy P2, part number 90885. A time delayed controller will send the preset amount of voltage to the trailer brakes every time the brake is pressed, whether it is a panic stop, or a quick jab to the brake pedal. A proportional...
    view full answer...
  • Is a Brake Controller Necessary for Trailers with Electric Trailer Brakes
    If your trailer has electric brakes and you want them to properly actuate, you will need a brake controller. The brake controller is tied into the circuit for the brake stoplight switch, which tells the trailer brakes when, and with how much force to actuate. I would recommend a proportional controller. A proportional brake controller has an internal sensor that can tell how quickly the tow vehicle is stopping, and will send the appropriate amount of braking force so that the trailer...
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  • Best Brake Controller for Truck with Air Brakes
    Since the brake controller is activated by picking up the brake light signal, any controller would work fine for your trailer. Since jake brakes typically do not activate the brake lights, you would be fine using the jake going downhill without actuating the trailer brakes. The Tekonsha Prodigy P2, part # 90885 would be a great choice. It is very easy to use and setup.
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  • Brake Controller Troubleshoot on 2005 Ford F150
    There is not a rheostat in the controller, but there is an inertial sensor that senses how quickly the vehicle stops, and then sends the appropriate voltage to the trailer brakes. The variable voltage you read when using the manual override will depend on how high the output on the controller is adjusted. The small amount of voltage you get when the brake is pressed is actually the voltage the controller sends to verify that the trailer is connected. The controller will not send full voltage...
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  • Brake Controller on Vehicle with Air Brakes
    A brake controller will work on just about any vehicle, regardless of the braking system it uses. The controller is tied into the brake stoplight switch that's usually located above the brake pedal, which is what tells the controller that the vehicle brakes are being applied so the connection is purely electrical, not hydraulic or air actuated. I would recommend a proportional controller such as the Tekonsha Prodigy, part # 90885. A proportional controller has an internal sensor that can...
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  • Tekonsha Prodigy P2 Trailer Brake Controller Showing OL, PL and SH Error Codes
    First, lets start by resetting the Prodigy P2. With the trailer disconnected from the vehicle, disconnect the brake controller by unplugging the harness from the rear of the unit, and plug it back in. The display will show NC for 15 seconds, and then show two dots. The OL error code indicates that the Prodigy is drawing too much current. This is usually caused by a short on the brake output wire on the trailer or low resistance to ground on the brake wire. Look for any pinch points, or...
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  • How to Install a Brake Controller on a 2008 Hummer H3
    Brake controllers can be used with virtually any vehicle so there are not many vehicle specific instructions out there. Underneath your dash somewhere is a bundle of 4 or 5 wires Red, Light Blue, Black, Dark Blue and possibly Orange. The Orange wire will not be used. The bundle is usually taped up in one of three places underneath the dash. Sometimes it is next to the center console by the gas pedal, sometimes it is above the emergency foot brake by the door and other times it is behind...
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  • Recommended Brake Controller for a 1984 Scamp 16 Foot Trailer and Installation Cost and Information
    I prefer and usually recommend proportional style brake controllers. They brake more smoothly and vary the brake pressure depending on how hard you press the foot brake in your vehicle. The harder you press the brake, the more the nose of the vehicle drops. There is a pendulum switch inside the brake controller that senses this and sends more voltage to the brakes. Our best selling brake controller is by far the Tekonsha Prodigy, part # 90885. It is easy to use and very effective. I have...
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  • Wiring A Gooseneck Trailer For Two Axles with Electric Brakes
    Only the blue wire is ran to the trailer brake connection at the rear of the vehicle. This wire should be 10 gauge. The ground for the brake controller is ran to the negative battery post or a suitable ground point on the vehicle. The grounds for the trailer brakes are connected to the trailer frame, the closer to the trailer brakes the better. If both of your axles have brakes (4 brake assemblies) then you will splice one wire from each of the magnets in the brakes to the brake feed circuit...
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