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Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires

Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires

Item # ETBC7
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etrailer Trailer Brake Controller - ETBC7
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If your vehicle already has a 4-way flat, this kit includes everything you need to install an electric trailer brake controller and 7-way connector. If there's not an existing 4-way flat on your vehicle, you can purchase one separately. Call 800-298-1624 to order etrailer accessories and parts part number ETBC7 or order online at etrailer.com. Free expert support on all etrailer products. Guaranteed Lowest Price and Fastest Shipping for Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires. Accessories and Parts reviews from real customers.
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etrailer Accessories and Parts - ETBC7

  • Trailer Brake Controller
  • Installation Kit
  • etrailer

If your vehicle already has a 4-way flat, this kit includes everything you need to install an electric trailer brake controller and 7-way connector. If there's not an existing 4-way flat on your vehicle, you can purchase one separately.


Features:

  • Kit includes wiring and accessories required for installation of a trailer brake controller (sold separately) in your vehicle
    • Designed for use on a vehicle with an existing 4-way flat trailer connector
  • 25' Long, 10-gauge duplex wire is wrapped in an abrasion-resistant cover
    • Connect one wire to the blue wire on the brake controller
    • Connect one wire to the positive post on the vehicle's battery via the included 40-amp circuit breaker
  • Pre-wired 7- and 4-way trailer connector mounts easily at rear of vehicle with included bracket
    • Plugs into existing 4-way trailer connector on vehicle
  • Heavy-duty circuit breakers - (1) 20 amp, (1) 30 amp, and (1) 40 amp
  • Circuit tester helps you find the stoplight switch wire above the brake pedal
  • Also includes hardware for installation:
    • Ring terminals for battery and breaker hookup
    • Quick-splice wiring connectors
    • Self-tapping screws
    • Zip-ties
    • Wire loom for a professionally installed appearance


Note:

  • No existing 4-pole connector: If your vehicle does not already have a 4-pole flat trailer connector installed, the etrailer application guide can be used to find the easy-to-install connector made specifically for your vehicle.
  • Extra-long vehicles: If you drive a crew cab, extended cab with long bed, cargo van, minivan, or extended-length SUV, 10' of extra wire (ETBCXW - sold separately) will make installation much easier.

7-Way and 4-Way Trailer Connector

57672 Connector Diagram



Wiring Diagram for Trailer Brake Controller Installation

Wiring diagram of brake controller installation


ETBC7 Universal Installation Kit for Electric Trailer Brake Control - 7-Way Blade and 4-Pole Flat - 10 Gauge Wires

Installation Details ETBC7 Installation instructions




Customer Reviews

Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires - ETBC7

Average Customer Rating:  4.8 out of 5 stars   (2341 Customer Reviews)

If your vehicle already has a 4-way flat, this kit includes everything you need to install an electric trailer brake controller and 7-way connector. If there's not an existing 4-way flat on your vehicle, you can purchase one separately.

- ETBC7
by:

Very straightforward install on our Jeep JKU. Plenty of wire and everything you need for the job. Only dropped it down to 4 stars for 2 reasons: First the provided screws to attach the bracket to the chassis are garbage. Both snapped off in the holes and had to be drilled out adding quite a lot of time and swearing to an otherwise easy job. Secondly the bracket attachment for the 4 pin plug is laughably bad. It is so loose that I am sure it will spend most of its life dangling after it falls off.


Comments
Be careful how close the wiring is to the muffler in the rear. Don ask how I discovered this...
Scott - 03/02/2022


- ETBC7
by:

I have a 2018 BMW X2 that did not come with a factory tow package. I had an etrailer hitch and 4 way plug installed last year and has been perfect since. I just recently purchased a camper and needed to have a Brake controller & Brake controller 7 way deluxe kit installed. My mechanic installed them with the detailed instructions that the units came with without any issues. The Tekonsha P3 is extremely user friendly and is working flawlessly. A bit overkill for my car being I can only tow max 3500 pounds, and my camper is 1 axel. this unit is rated up to 3 axles. I look at it like this way, when I trade in my BMW I will take my P3 with me. etrailer is amazing with the support & products they provide and I highly recommend them to anyone who asks me.


Comments
My Meghan said this was very easy to install, works great no complaints whatsoever.
Teresa - 12/24/2021


- ETBC7
by:

We purchased a new Hyundai Palisade that had an OEM hitch and “prewiring” for trailering. Unfortunately this prewiring was only a 4-pin connector so it did not include wiring for controlling electric trailer brakes. We finally convinced the dealer to install a 7-pin connector - if we obtained the appropriate parts from etrailer.com. George J. at etrailer.com recommended this kit (#ETBC7) as the parts we needed for conversion to a 7-pin connector. The car dealer’s service department installed the 7-pin connector while we waited for 5 hours. With a wireless brake controller, everything now works properly for towing our Casita. This photo shows the installation after I modified it so that the connector was above the hitch instead of below it (too close to the ground). I had to fashion a bracket for appropriate spacing and I left several bolts that attach it to the etrailer.com bracket (oops).



- ETBC7
by:

1 year review. I installed this product on my 2017 Toyota Highlander. As a person inexperienced with vehicle electrical systems, I found the installation challenging but achievable. I appreciated the advice and videos from etrailer.com. I liked the final fit and finish on my vehicle when using manufacturer hitch and bumper kit. After 1 year of usage, I have found 4 specific opportunities for improvement. 1. Water accumulation in the plug cover flap. After rain, I flip the flap up and water spills out of the crevice in the flap. There is also a small amount of water in the plug itself, but unclear if there is rain entering the socket or if this is from spillage when the flap is opened. This needs to be sealed to protect the plug! 2. Poor quality top mounting nuts and bolts. I overtightened one of the top bolts and it sheered off. I replaced it with zinc plated hardware. In my picture you can see after 1 year of use the included bolt on the left is corroded and the hardware store bolt looks new. 3. Poor quality front mounting screws. You can see the 4 rusting screws in the picture. These are designed to be exposed to weather, so I was surprised to find rust forming after the first few weeks. 4. Poor quality attachment point for the flat connector. The 4 way slips onto the side of the 7 way mount and is held on by rubber friction. It never stays in place and is always dangling. One other suggestion is to offer a kit made for the newer wireless brake controllers. It could have less wire, fewer connectors, and cost less. Because of the above problems I will have to replace the 7 way plug soon. Therefore I gave the product only 2 stars and would not recommend purchasing it.



- ETBC7
by:

About a year ago, I purchased a brake controller and parts to install a 7-pin trailer connector on my Ford Edge. The installation all went well and I used the Dielectric Grease to seal the wire connections at the connector. My four-star rating was given simply because I don't know if the grease is working as I hope it is. Time will tell more years down the road. As a side note, I made an additional bracket to enclose both connectors (4-pin & 7-Ping, see photo) to keep the 4-Pin connector from sliding out of place because it was only retained on three sides without my bracket.



- ETBC7
by:

Very good, however fitted to a Subaru Crosstrek - not an easy job because you cannot get to the brake pedal switch connections. However made a "work-a-round". Used Curt tow hitch, this wiring harness and Tekonsha Primus brake controller. Works very well.


Comments
Worked very well last year - plan trips later this year.
Keith - 03/08/2022


- ETBC7
by:

I purchased this 7-pin connector for my 2007 FJ Cruiser. I was excited to get this installed, and found that the wiring was solid. I chose to cut the 4-pin connectors off of my FJ and this adapter. The fewer plugs the better! I like to solder and shrink wrap me connections. While the plug and wiring are really nice, the mounting bracket is junk. It’s very thin metal which appears to be simply painted, not powder coated. It also has a notch on the side for the 4-pin connector. This is the worst part. The rubber around the 4-pin is grooved, presumably to fit into the notch in the mounting plate. But it is not secure at all. The 4-pin simply falls out and dangles even with nothing connected. And there is no way to secure it. This is a significant design flaw.


Comments
Thank you for your review! It actually looks like you have that bracket on the wrong side of the 7-Way. The right side is a little wider so if you flip it to the left side youll have enough room for the 4-Way to fit properly.
-- Etrailer Expert Jon G - 05/08/2021


- ETBC7
by:

My truck was stolen and wrecked. I had to reinstall the Tekonsha brake controller in my new truck using this harness. I did not have any problems with the installation at all. Thank you eTrailer for the great support.


Comments
Still working fine.
Don - 03/09/2022


- ETBC7
by:

I was looking for the 7 pin harness for an 09 Tacoma, I didn't see the correct one on line so I called and Shawnee was able to go right to the kit I needed to adapt my 4 pin harness on the truck to a 7 pin. It came complete in the mail as it expected and was the right one for the conversion, super helpful and knowledgeable.



- ETBC7
by:

product was excellent and COMPLETE. everything you need with very DETAILED directions. i also ordered the prodigy P2 to complete my install. both were excellent and very recommended. only modification was on the actual plastic cover on bumper, i cut away minimal pieces with razor knife for perfect fit. you can look at all the pics to check out install. I took advantage of the reverse light wire and put LED light bar on back of trailer. i made one email to e trailer for exact numbers for my make and model. the response was pretty impressive. Full detail with pictures and product numbers all set up so all i had to do was press order and pay for it. This is how american companies are supposed to be ran......I LOVE IT!!!!


Comments
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



- ETBC7
by:

The installation videos and instructions provided by etrailer are exceptional and are one of the main reasons why I purchased this kit. My second reason for purchasing this kit rather than buying everything local was for the duplex wire which I could not find local unless I was willing to use outlet wiring or two single wires. There are two things I don't like about this kit and two things that just bothers me. First the duplex wire I wanted so bad is too short. I had to mount my controller on the left side of steering wheel just to have enough wiring. Second the wiring on the 7/4 way connector isn't even a foot long so I had to remove the large ring terminal carefully and install it on a piece of white white I cut from running the duplex from the back to the front and use a buck connector to join it to the white wire on the 7/4 way connector. Once I did that I was finally able to ground the connector to my frame. As well I don't like how the 4 pole connector can easily fall off the bracket. It makes the connector look cheap. Lastly, they should really include the No-Drill Mount 18140 with the kit. Thankfully I was able to use my old mount for my existing 4 pole. So if the duplex wire had been two feet longer and the kit included a better 7/4 way connector I would give this a 5 Star rating.



- ETBC7
by:

Very good kit. I was short on wiring for going from battery to brake controller but had some on hand. YouTube video from Etrailer for toyota highlander glossed over connecting to the brake light but eventually figured ot out. Glad I bought this kit compared to others i saw. Worth the extra money.



- ETBC7
by:

Overall, the components have performed well and have mostly held up. I do have to complain about the 7-way plug, though. The screws in the plug are not exterior grade, and they began rusting pretty much immediately. Also, the plastic loom material around the wires collected water and routed in right into the back of the plug. After driving on wet roads for just a few minutes, I could open the plug cover and water would come gushing out. I cut the loom material off as close to the back of the plug as I could get, then sealed around the entry point of the wires with a combination of regular electrical tape and liquid electrical tape. Haven't had any problems since then.



- ETBC7
by:

This is a great product. I think etrailer made it easy for our novice DIY. I basically read the instructions and watched video a few times before I start. The installation is not difficult; it is just a dirty and tiring work. One thing I should mention, is that grounding is very important. I wasted most of my time for not properly grounding. The first place you encounter the issue of grounding will be when you test the break wire in the box under the dash to the left side of the steering column. Using the tester, you must find a bare metal part for grounding, otherwise the other end of the tester would lit up properly. This is not mentioned or emphasized in the video or written instructions. Painted surface won't do since it insulates the metal. I spent a lot of time trying to figure out why the break wire won't lit up, calling etrailer customer service representatives, nobody really told me this. I basically figured out by myself. Hopefully you won't need to waste time on this. The second place you will encounter grounding is in the front engine box near the battery where you must drill into the frame to attach the ground wire, like instructed by etrailer. But I didn't like to drill "unnecessary" holes into my frame, I just used a ziptie to attach the ground wire to the frame, so grounding wasn't good. I eventually figure out I must drill into the frame to get to the bare metal for grounding. The 3rd place is in the back, there is another ground wire you must drill into the frame to reach bare metal. I choose to drill into the tire tub, since it won't affect the structure integrity of the frame rails. Either way it will work as long as you drill into the bare metal. The wires supplied by etrailer is long enough for this installation.



- ETBC7
by:

Let me start off by saying that the service at etrailer was great; however, the initial product delivered was not. The harness was wired incorrectly, the 40A circuit breaker wasn't included and the jacketed wire in the kit won't work on a Jeep wrangler without an addition length of cable. I would have known this if I watched the whole install video but the inconvenience of getting everything from etrailer in the mail was out the window, as I had to go buy the breaker and wire from [auto parts store] for some towing I needed to get done. All that said, they did end up replacing the faulty harness and sent me a replacement 40A Circuit breaker, though it's not exactly the easiest item to uninstall and swap out. The only item that is just bad and wasn't able to be corrected is the 4-pole connector fit in the bracket. The cutout in the bracket for the 4-pole is too large for the connector, it falls right now. I wrapped the connector in electrical tape so it would stay wedged in but still comes out about once a week. The cutout in the video is tapered like the stock jeep 4-pole bracket but the one pictured and included in the kit is not. Big shout out to Vicki for working with me to get the replacement items sent out.



- ETBC7
by:

Exactly what I needed to hook up my 7-way trailer. Only drawback was the self-drilling sheet metal screws for mounting the socket both broke off during use. I replaced them with bigger ones which are working fine now, so you may want to buy larger ones too and save the hassle. Got about 4000 miles on it so far and everything else has been flawless.



- ETBC7
by:

Kit is easy to install and bolted on easily to my 2016 Toyota Highlander. My Highlander has the 4 Pin factory tow package so this was converting that to 7 pin. I modified the mounting bracket for the plug by drilling out the holes slightly so i could hit the factory mount point without modification. Rather than run outside the vehicle ziping to the frame I opted to route via the trunk to the brake controller in the center console so it is out of sight when not towing. the supplied 10 Gauge wire was not long enough with how I had to route the power to the brake controller. I refused to drill a new hole in the firewall/floorboard so i routed along with the factory wiring harness over to the passenger side into the vehicle and under the carpet. I ended up having to purchase additional wire from the big box store to have enough to complete the install. The way I did it was around a 6 hour install to get interior torn out and everything wired in pretty. No matter how you plan to do the wiring, plan for a bit of time.



- ETBC7
by:

Thanks eTrailer.com! My wire kit arrived with all of the necessary parts very quickly! Using your install video helped to make my install a breeze, Thank You for the install videos! The video was easy to understand and I was able to buildup on it a little. I tried to wrap the wires at the engine from the frame to the battery with protective sleeve for a little added protection. Also, I would like to recommend adding an additional ring terminal with the kit... I ended up clamping on onto the ground for the wire harness of the brake controller only to realize the cable was too short. I ended up needing 1 extra but a trip to the part store did the job! Thanks again! I look forward to seeing how my weight distributing hitch is going to work now :) Ryan Denver, CO



- ETBC7
by:

Great kit! I Had exactly enough of the two wire harness to complete the job on my 2013 Chevy Express. I already had the T-One 4 wire harness installed which plugged into the 7 wire receptacle nicely. I purchased addition harness conduit to cover wiring under hood and dashboard to make a clean and factory look. The local parts store had side post battery bolts with threaded attachments for the power and ground leads. The only difficult part was locating a suitable brake switch signal feed. I ended up using the aux. stop light fuse in the under hood fuse box. Well worth the money spent!



- ETBC7
by:

I purchased this knowing it was universal, and that it was low end in price. Just to save you some grief, go out and buy some longer/stronger zip ties, some beefier self-tapping screws, and some extra wire. If you want a stout holder for the plug, this one seems pretty flimsy, but when everything is together, it stiffens up. One's in the store are thicker and stronger...that's up to you. The instruction are pretty clear. It is physically challenging to move around under the vehicle, so you may want to use a pit or lift to gain easier access. The self tapping screws do not automatically break. They break when you go to tighten them up snug. You may get by with them if you go really slow. I just prefer to use stronger ones. When using the tester, make sure to connect the clip to something metallic to get a reading. There is not enough wire to actually connect a brake controller. Go get some wire. I wound up having to use extra for the ground wire. Not much...about 6 feet or so. There are just enough connectors and screws so if you don't want to get stopped mid project, have some extras on hand. Overall, I am pleased with the unit, and for the price I am pleased. If I had paid more, I would have expected more, but i have to admit, those doggone screws really bothered me. See the pics of the install. The best part of the transaction was the customer service. They were patient and helpful...definitely the people you want to talk to if you are just getting into this like me.



- ETBC7
by:

All parts needed are included (with the exception of a no-drill mounting bracket) for connecting a 7-blade trailer connector to a system that has a 4-pin connector. Installation is not easy. It involves getting up under the vehicle to run the wire from back to front. Routing to keep away from moving and hot parts can be tricky. On a 2016 Ford Escape SE, I was able to run the wire under a heat shield part way and through a subframe part way. The hardest part was figuring out how to run the wires through the firewall. In the 2016 Escape, there is an unused plug high on the firewall to the left of the brake pedal. I managed to punch a hole just big enough to run the necessary wires. While it would have been better if Ford had provided a connector for the brake controller, this kit works. Crimping connectors is the hardest part, especially up under the dash. Also, instead of using the large self-tapping screw to fasten the ground wire at the rear of the vehicle, I was able to use an existing bolt, adding a suitable nut to fasten it directly to the frame. My testing indicates that this will work. Here are pictures of part of the wiring and the breakers



- ETBC7
by:

I used the online install video and it was very helpful for a 2010 Highlander. I would suggest a few changes on the video. - when drilling through the firewall, advise the consumer to use a grommet. - The only confusion I had was the color of the 10 ga wires to the connection of the wires for the controller, they do not match (blue vs white). - I live in an area that uses salt in the winter. I did not install the wire (10ga) on the outside of the vehicle as instructed nor did I install the connector permanently on the outside of the vehicle. I ran the 10 ga wire on the inside of the vehicle due to the corrosion that does happen. I do not use the trailer much (maybe 5% of my total miles per year or 1250 miles), but when I want it I need it. If I install the connector and wires on the outside I would be replacing them more than I would be using them. When not in use I store them inside the vehicle. - I created a quick attachment mount for the connector.



- ETBC7
by:

Easy to install and works well. My only complaint: Why does the kit come with cheap screws that begin rusting with the first month? Why not charge 50 cents more and provide stainless screws?



- ETBC7
by:

I previously purchased and installed the model 75517 Draw-Tite Max-Frame Trailer Hitch Receiver - Custom Fit - Class III - 2" AND the model 118421 T-One Wiring Harness with 4-Pole Flat Trailer Connector and installed them on my 2007 Dodge Nitro. I then decided that since I had went this far with towing capabilities I might as well install a Trailer Brake Controler which required a 7-Pole Trailer Connector. This ETBC7 kit seemed like the right way to go, so that's what I did and it worked out perfect.



- ETBC7
by:

Nothing wrong to say about etrailer, their good service or about the quality of the items delivered. My big deception is about the hidden fee I had to pay at delivery. I was charges $[XX] for Custom Fees.


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  • Can Hopkins Reliance Trailer Brake Controller Be Mounted In Any Direction?
    Since the Hopkins Reliance Trailer Brake Controller you mentioned is a time delayed trailer brake controller, it can be mounted at any angle. Proportonal controllers require a specific mounting angle as the internal inertia sensor requires it to be level on the horizontal plane for accurate braking. I went ahead and included the written instructions for the Reliance for you to take a look at, and if you have any other questions about this controller feel free to let me know!
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  • Connecting Lighter Gauge Wire to Heavier Gauge Wire
    When connecting different gauge wires you can solder the connection and the gauge difference would be not issue at all or if you were wanting to use a butt end connector you'd need to use the larger size connector what comes with the # ETBC7 and just be sure to clamp the end with the smaller gauge down completely and tightly. Another trick I'll do is strip back the lighter gauge wire about twice as much as you normally would and then fold the exposed wire in half so that the butt connector...
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  • When Installing the ETBC7 Which Breaker Is Used On Wire to Brake Controller
    When installing the # ETBC7 you will use the 40amp breaker to go between the battery and the 7 way on the 12v hot lead; the 20amp or 30 amp breaker will be used between the battery and the brake controller along the power wire for that. Which breaker you'll use will depend on which brake controller you're using, so you'll want to check the instructions for the brake controller you're using to determine which one should be installed. I've linked the installation video of the ETBC7 on a...
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  • What Does the Black Wire for 12v Power in the ETBC7 Kit Do?
    The 12v hot lead on a 7 way connector like the one in the # ETBC7 does provide power to charge the battery, but also provides power to any of the trailer's interior lights, or can be used to power a jack.
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  • Recommended Method For Installing 7-Way Connector On 1996 Dodge Ram
    You have the right idea. Since it appears that the factory wiring on your 1996 Dodge Ram has been cut, bypassing as much of it as possible will be a great idea to avoid headaches down the road. Since you already have a 4-way connector you will plug it into the Universal Installation Kit for Trailer Brake Controller # ETBC7 as you mentioned and make the following remaining connections. White wire grounded to vehicle frame Blue wire to trailer brake controller Black wire to vehicle battery...
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  • Reverse Light Wire on a 2016 Mazda CX 5 GT for Installing ETBC7 Wiring Kit
    According to my research there should be a white/black wire going into your left and right backup lights on your 2016 Mazda CX 5 GT. You should be able to just splice into them to get the reverse light function for the Universal Wiring Kit # ETBC7 but I recommend using the included circuit tester to make sure that the does carry the reverse light function before splicing.
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