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7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires

7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires

Item # ETBC7L
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etrailer Accessories and Parts - ETBC7L
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If you have only a 4-way flat on your vehicle and want to install a brake controller that pulls power from a 7-way trailer connector instead of wiring directly into your vehicle, this kit will adapt your plug for use with your brake controller. Call 800-298-1624 to order etrailer accessories and parts part number ETBC7L or order online at etrailer.com. Free expert support on all etrailer products. Guaranteed Lowest Price and Fastest Shipping for 7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires. Accessories and Parts reviews from real customers.
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etrailer Accessories and Parts - ETBC7L

  • Trailer Brake Controller
  • Installation Kit
  • etrailer

If you have only a 4-way flat on your vehicle and want to install a brake controller that pulls power from a 7-way trailer connector instead of wiring directly into your vehicle, this kit will adapt your plug for use with your brake controller.


Features:

  • Kit allows you to use a trailer brake controller that pulls power from your trailer connector instead of wiring into your vehicle
    • Great for use with Tekonsha Prodigy RF (90250), Autowbrake (3430001), and Curt Echo (C51180) trailer brake controllers
  • 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
  • (20') 12-Gauge wire lets you run power from your vehicle's battery to the trailer connector
    • General Purpose Thermo-Plastic (GPT) insulation is highly resistant to acids, gasoline, oil, grease and most industrial solvents
  • Heavy-duty, 30-amp circuit breaker protects your vehicle's electrical system by preventing overload
  • Installation hardware included
    • Ring terminals for battery and breaker hookup
    • Self-tapping screws for attaching circuit breaker and ground
    • Zip-ties for securing loose wires


Note: 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.


57672 Connector Diagram



7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires






Customer Reviews

7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires - ETBC7L

Average Customer Rating:  4.5 out of 5 stars   (116 Customer Reviews)

If you have only a 4-way flat on your vehicle and want to install a brake controller that pulls power from a 7-way trailer connector instead of wiring directly into your vehicle, this kit will adapt your plug for use with your brake controller.

- ETBC7L
by:

This fit ALMOST perfectly on my 2007 Tacoma. I zip tied the four pin trailer connection to the tow vehicle harness. Besides the four pin, I only needed the black power wire because I am using a Curt Echo bluetooth brake controller. I ran the power wire along the frame, into the cab, through the firewall and to the battery via the included breaker. I zip tied the unused wires to the harness and wrapped the whole thing in electrical tape. The included bracket almost fit my OEM four pin mount perfectly. The holes were a bit too narrow but I just had to widen them with a drill bit pressing outward. The setup looks stock and I'm very pleased with it.


Comments
Like many other on here, my screws have rusted. I would gladly pay the extra $2 for stainless ones to come in the kit. Otherwise everything is still working good.
Thomas R - 04/13/2021


- ETBC7L
by:

The kit itself is very nice. I wired it on a Rav4 Prime SE. The 4-pin does not really secure very well to the mounting bracket, there is just a slot and rubber ribs that slide in. Mine has not fallen out yet, but it just seems kind of insecure. I would have preferred it be permanently mounted and I did not notice it before I ordered. Also, the four mounting screws that secure the connector to the mounting plate are coated with black oxide that will rust within a week or two. I plan to replace the mounting screws with ones that are coated with a more automotive grade coating.



- ETBC7L
by:

Today I installed: - Draw-Tite Max-Frame Trailer Hitch Receiver (Item #76156) - Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector (Item #C56217) - 7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires (Item #ETBC7L) It took about 4 hrs at an amateur pace with manual tools. This is the second time I put a trailer hitch receiver on a Toyota Highlander. My first installation was a Curt on a 2010 Highlander. This time I got the Draw-Tite for my 2018 Highlander. Few observations: - The fact that the car comes pre-wired and with welded nuts for the hitch makes the installation smooth and easy. Nicely done by Toyota. - The Draw-Tite hitch receiver is NOT designed for use with weight distributing hitch, which may be an issue for some users. - I like the that the hitch is nicely hidden under the rear bumper and comes with the bracket for trailer electric connector. Keeps things nice and tidy. - The installation can be done by one person (with the aid of a couple of plastic buckets), but I STRONGLY recommend to have a helper. The hitch receiver is heavy and if you drop it can cause some serious damage to your body. - There is no need to remove the passenger side plastic mud cover behind the rear wheel. - There is a good reason why they don't show you the cutting and installation of the driver side mud cover in the etrailer videos. It's the proverbial PITA. :-) - The receiver ends-up about 16" from the ground (with the car unloaded), so you will need a 2-3" rise ball mount to end around 17-18" once the trailer is hooked up. - The cables can be routed nicely through an existing hole under the driver side plastic storage bin. It comes with a rubber plug which can be cut just enough to lush the connector through. This is the cable routing for OEM Toyota trailer cables. And because is it hidden under the plastic mud cover, you don't have to worry water getting in when driving on a rainy day. - Make sure to protect the cables with a plastic hose or by wrapping them with plenty of insulating tape to prevent chaffing in the places where the cables cross hitch members. Some edges can be sharp and sooner or later will cut through the insulation. - Trailer wiring and the T-connector are power all the time, regardless of if the key is in the ignition or not. So make sure to unplug your trailer when parked for extended period of time to prevent running down the battery. The T-connector itself draws only about 1 mA when idle, so you don't have to worry as long as the trailer is not connected. - The fact that you can see the hitch with the rear view camera makes hooking up the trailer a breeze by just person. Overall, I'm happy with the product. And etrailer customer services and prompt shipping was, as always, 5-stars. (I am a returning customer)



- ETBC7L
by:

Used on 2015 Wrangler JKUL. Based on recommendation from Erik (etrailer) the product was received. Installed without any issues. Only note is this kit has single black wire for 12v not the 12v/brake cable. So make certain you do not need to attach to the brake circuit.



- ETBC7L
by:

Wire kit came with everything needed to install on my 2020 Subaru Outback. Took some time to make sure the 12v power was ran safely from the battery to the plug but easy to find a good path. I threw away the bracket that came with the kit as my curt hidden receiver didn’t have a mounting place. I used the curt easy wording bracket that goes over the collar of the hitch and supports the 4 way and 7 pin adapter. I also used the curt plug and play wire adapter for the 4 pin harness and cut a hole in the drain plug for it to run out the spare tire area and into the wire harness.



- ETBC7L
by:

Great product and looks sleek. I installed on my 2020 Subaru Outback Touring XT and attached to my factory installed hitch. With a vice and hammer, I had to bend the supplied bracket straight for the correct mount orientation; it turned out great though! I gave 4 ??'s because of several factors: 1) After taking a bit of time routing the 12 awg wire to the battery, I could have used a foot or two more wire; my car isn't even that long, and I took a pretty direct route. I even measured and preplanned, thinking I'd be fine. Had to use some spare 12 awg wire I had on hand. 2) As another reviewer stated, I was having problems with the 4-pin sliding out of the bracket. But, I fixed the problem by tying one of the supplied zip-ties around the rubber 4-pin edge and two of the bracket screws, which now holds it in place. 3) It would have been nice to have a set of screws and nuts to attach the bracket to the hitch; I just utilized the existing ones from my 4-pin factory installed bracket. All in all, I'm really happy with this product!



- ETBC7L
by:

Dealer installation using etrailer kit on 2021 Hyundai Palisade. The hitch sits low @ 13”. I’ll be using a Curt Echo and am excited to tow popups and ultralights.



- ETBC7L
by:

The videos and help were invaluable in connecting all of the wires for the power and brake control. The video was even on the exact model that I was putting the connector on. There are three difficult procedures in the installation. 1) Getting a connection to the brake light under the dash is very difficult as there is very little room. I would have liked to see how the tech was able to determine which wire was the correct one to use and extend it in order to make a splice. I removed the brake switch from the bracket which allowed me to pull it down enough to test each wire and find the one that went live with the brake pedal being used. 2) Making a hole in the firewall to pass power, ground and the brake control wire. Here the video was spot on. The difficulty is that the firewall is about 12" behind the ducting on the engine side and there is not much room inside to work. I used a 24" 1/4 drill from the engine side to start a hole in a good place. Using a drill from the inside the hole was than enlarged to what was needed. 3) Routing the wire from the engine to the back. Here the video did not go into detail as to how the fish the wire through and over the various components. Having a high lift would definitely help here. The remaining connection and wiring was straight forward. I used expandable braided shielding on all of the wires to bundle them together and add additional abrasion resistance. As an added safety measure, inexpensive rubber boots were used to cover the exposed connections on the breakers. Without the boot, the studs would be exposed even with the engine covers in place.



- ETBC7L
by:

Pros; pretty much everything you'll need for the upgrade is provided except the electrical tape. Lol. If you are going to be using a bluetooth brake controller and no reverse lights on the trailer, after plugging into your vehicles existing 4 pin you'll need to attach the ground wire and run the hot wire to the breaker and then to the vehicle's battery. Pretty simple. Cons; very poorly designed mounting bracket feature for 4 pin (this is an understatement). I was able to overcome that by mounting the OEM supplied 4 pin bracket onto the one that comes with this kit.



- ETBC7L
by:

Everything installed perfectly, and testing the wiring on a friend's trailer proved all connections worked. Only thing I'd add, is that for installing on a 2021 (and probably 2020 too) Toyota Highlander Hybrid XLE, you don't really need the full 20' of 12 gauge cable, since the battery is in the rear and easily accessible from a wiring rubber plug in the metal body of the compartment- probably need about 5' total. The mounting bracket needed a little help on widening one of the holes to fit the factory installed hitch mounting holes that exist for the 4 pin plug, but that was easy enough with a drill.



- ETBC7L
by:

Good product and worked well. Only issue is that screw hardware holding harness to mounting bracket rusted within two months. Otherwise good product.



- ETBC7L
by:

All the parts were in one place to add a 7-way connection for my 2020 Highlander, but sadly the very visible screws which hold the 7-pin plug outlet rusted within two days of the installation. I used care when putting them in and am disappointed to see that I'll need to back them out and paint.



- ETBC7L
by:

Had to modify for my 2017 Wrangler JKU. Muffler is too close to bumper frame, so had to mount the bracket to the edge so wires would clear heat of muffler. Bumper bottom is not flush with frame. Could not open 7-pin connector cover all the way, had to mount it sideways. So I had to drill new holes in mounting bracket. There is not enough wire to properly route. Had to add 4 feet.



- ETBC7L
by:

Bought to use with the curt echo brake controller. Wiring was very straightforward I did run the ground wire to the battery as well. Wiring was easy and controller is great.



- ETBC7L
by:

I worked with Linda H. from etrailer to expedite the shipment of the 7 way upgrade kit. She was fantastic and I received the product in time for install before my trip. The harness was well constructed and straight forward to install using one of the etrailer video on-line. So far so good!



- ETBC7L
by:

I debated on 3 or 4 stars. I would be a 3.75, and maybe only because it really frustrated me. The base parts are all there, but the ground wire and 12 volt are too short. You absolutely with out a doubt need more wire. Even in the excellent video they have, the ground is too short. As a bit of a novice, I really had to research to figure out what wire to extend it with, please etrailer, just add a foot to it. The 12 volt is also way too short. I took my time, and found a good, straight path, and it was just enough to make it the first part. It was no way long enough to do the second part. Please etrailer, just make the 12 volt 2 feet longer.. in the mean time, buy an extra 6 feet or so of 10 gauge wire and use it to extend the ground and the 12 volt.



- ETBC7L
by:

The unit has worked fine for a year. However the screws are rusty and the notch on the side doesn’t always hold the four prong plug.



- ETBC7L
by:

Had almost everything necessary to convert my 4way to a 4way/7way combo on my 2006 Tacoma. Just needed wire tap for the reverse light wire, but that's it. Plenty of wire to get to the engine bay and all the connections were straightforward. Easy install, especially with the videos!



- ETBC7L
by:

Product works well, needed to fabricate a custom mounting bracket for a cleaner look.



- ETBC7L
by:

Kit exactly as described. Got me set up and running with my new camper.



- ETBC7L
by:

My only complaint is the bracket that holds the 7 way plug had no way to secure the the vehicle other than self tapping screws thru the plastic facia. Other than that installation was easy.



- ETBC7L
by:

Easy installation. Only fault is the cutout on the mount for the 4 flat is slightly too big so the connector isn't held securely and can easily fall out of the mount.



- ETBC7L
by:

Worked perfect for my truck. Only problem water can enter around cap. Had to put bag over to keep water out.



- ETBC7L
by:

Straight forward installation and works as advertised.



- ETBC7L
by:

Too expensive for no trailer plug.


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    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Andrew K
Video by:
Andrew K
Employee Jonathan Y
Video by:
Jonathan Y
Employee Michael B
Video by:
Michael B
Employee Lindsey S
Edited by:
Lindsey S
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Kathleen M
Installed by:
Kathleen M
Employee Cole B
Installed by:
Cole B
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Shane H
Test Fit:
Shane H
Employee Robert C
Test Fit:
Robert C
Employee Conner L
Test Fit:
Conner L
Employee Ryan G
Test Fit:
Ryan G
Employee Mike S
Written by:
Mike S

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