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Install your electric trailer brake controller quickly and easily with this custom wiring adapter. Simply plug one end of the adapter into your brake controller and then plug the other end into the built-in port beneath your vehicle's dash.
Features:
To install your electric brake controller, you need to connect the wiring of the controller to your vehicle. Certain auto manufacturers offer pre-wired options, typically known as tow packages, wherein wiring is run for you from the dash to the trailer connector on the back of your vehicle. When this is done, a port is installed at your dash so that you can easily plug in a brake controller.
This adapter plugs into the connector behind your vehicle's dashboard. The exact location of the plug may vary depending on your year, make, and model of truck.
No hardwiring is required to install this adapter. After you plug it into the factory port, you simply plug the other end of the adapter directly into your electric trailer brake controller. Because there are no wires to connect, installation is not permanent. You can unplug and remove your brake controller at any time to transfer it to another vehicle or securely stow it away.
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Average Customer Rating: 4.9 out of 5 stars (269 Customer Reviews)
Install your electric trailer brake controller quickly and easily with this custom wiring adapter. Simply plug one end of the adapter into your brake controller and then plug the other end into the built-in port beneath your vehicle's dash.
Get this cable for a simple, plug-in installation. You’ll spend more time hunting for the junction already wired into the truck harness than installing your brake controller. And after installed, no worries on loosening wire connections or electrical tape wrap unraveling.
The wiring harness is exactly what most folks need for an under dash or dash mount. I found that it was more convenient to access the brake controller emergency handle and see the brake controller if I took your metal mounting bracket and turned it upside down and mounted the controller on the left hand side of the steering wheel on top of the dash with a magnet taped to the dash. This allow me to remove the controller and move it between my Tacoma and Ford F150 easily. But in order to do this you need a longer wiring adapter, so you either cut the original wiring harness and splice in longer wires or buy two harnesses and cut off one end of each and splice that together. Very happy with both the harnesses and the Tekonsha P3 brake controller.
Connectors were a perfect match and included enough wire to locate the brake controller anywhere in the driver’s area of my Tacoma. One week fulfillment time for the 2-pc order; brake controller separately reviewed.
Easy fit and install. The surprise was that the harness provides full time power to the brake controller. The controller (P3) shuts itself off after 15 minutes, but I would rather have this tied to the accessory power that goes off with the key. This may be because the factory harness only provides "always on" power, but I have not confirmed yet. I will likely modify this harness to grab switched power at some point in the future
Heather A - 01/24/2021received it in great time Had no problem with the installation as it worked out well Pulled the kick panel off and there it was just plugged it in , was so easy , put it in the pocket hole on the dash just had to drill a hole in the back of the pocket and run the wire thur , works Great and so easy thanks etrailer information and delivery was great
Bill l - 12/19/2020Everything came in the package and the product came earlier than I expected. Installing it was fairly easy. However the only thing that proved difficult was Torquing the ball down on the hitch head which luckily [RV dealer] was good enough to do that for me. I am happy With the product and looking forward to using it.
Wiring harness 3031-P on a 2015 Toyota Tundra, doesn't get any easier. I have cut and spliced several brake controller over the years. This is a lot cleaner and very easy.
Great, specifically for my truck and it plugged right in and worked without modification. Could not ask for better
Easy installation. This unit is the best controller I have ever had. I utilized my existing inset compartment and just cut off the back of the compartment til I had about 2” remaining from the front flange to minimize the amount of space around the P3 controller when installed to have a better appearance.
Easy to install. The adapter fit perfectly and was long enough to consider various mounting options. I did look at a youtube video to find my 2020 Tacoma connector. The door sill and left kick panel had to be removed. The installation of the brake controller and harness only took about 30 minutes. A lot more time was spent looking online for the youtube video!
Trailer brake controller ordered for my Toyota Tacoma truck with adapter cable arrived and installed okay per instructions. Was delivered as per ordering information date with email.
I received my product in a very fast manner from etrailer. The part fit perfectly and was very easy to install .
Kirk - 06/03/2021The device has worked great, but honestly I wanted to thank the technical support group, Samantha you were amazing... Turns out my electrical system in the vehicle had issues, but the level of knowledge and effort to get me down the right path was wonderful. I will use this group again based purely on my interaction with Samantha
I bought this harness for my Toyota Tacoma 2018 because I installed breack controller Primius IQ and fit very Good. I’m so glad with the product, and etrailer is really fast to delivery.
Great product. Used with Tekonsha Prodigy P3. Installed on a 2017 Tacoma to tow our 2020 [email protected] 400 teardrop camper.
This product has worked flawlessly in the past year, though i do go more than a month or two when I don’t tow at all. The gain feature is easy to regulate. Tech support for guidance on installation was ideal. I would recommend this product to anyone.
Installation facile Et le site internet tres bien fait C'est mon 2e achat toujours un bon service Bravo
excellent quality, perfect compatibility with existing parts, fast delivery
Excellent high quality harness made the plug & play process quick & easy.
Steve L - 03/20/2021Unable to get the wiring adapter to function. It was grounded but still would not work. Going to Toyota to see if it is my inside harness.
Easy and quick to install
Order came quick all items were received and were right, the packaging was done good and I would definitely use etrailer again my only complaint is the amber light i got seems cheap but for the prices I should have known it was worth what I paid thanks for making shopping and receiving orders easy
Excellent product easy to install
This made the installation super simple. If your Tacoma already has the 7 pin plug on the back, then you can use this to just plug in the brake controller with this. You have to pop of the plastic kick plate, but no tools are required and mine when on and off easy. Once I figured that out, the whole brake controller installation took about 15 minutes using this wiring harness.
I bought this adapter to prove that my factory brake controller was not functioning properly. I am now using my old Prodigy P2 controller I was using on my previous truck n trailer, bypassed the factory unit on my current truck. Needless to say, it worked perfectly. My factory controller would not engage the travel trailer brakes no matter how I adjusted it. The P2 works with electric and electro over hydraulic brake systems. My truck has a button to select. My problem is in electric mode. If I switched to elec over hyd, the brakes lock up. I am going to the dealer to have him check the factory control and hear what they have to say.
Joe D - 03/19/2020Do you have a question about this Accessories and Part?
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