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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 (338 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.
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.
Wayne - 08/01/2022Great, specifically for my truck and it plugged right in and worked without modification. Could not ask for better
Gerald - 08/02/2022Great product. Used with Tekonsha Prodigy P3. Installed on a 2017 Tacoma to tow our 2020 [email protected] 400 teardrop camper.
SLM-C - 05/02/2022to be honest I bought this harness to modify it. I needed the plug that goes into the OEM port on the truck so I would not have to T Tap power to run accessories I simply would tie in my switches to this port to use for what I want. I still have not completed the install.
Alex - 12/21/2021Get 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.
Plug and play! It took me all of 15 minutes to install. The harness adapter was ideal, the controller was easy to install and works as advertised.
Everything 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.
Wiring adapter fit great ! Eventually bought a bigger truck which had a built in brake controller and no longer need the wiring adapter.
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.
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 in our 2019 Toyota Tacoma and works great when towing our trailer!
Allison - 12/10/2021Very happy with the Primus IQ brake controller. Doing a great job when towing
RV trailer. It was an easy installation. Would recommend this brake controller
for the price.
2019 Toyota Tacoma works good!
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.
Fit perfectly in my 2015 Tundra, easy to install. Trailer brake works well, definitely recommend. Also, got overnight shipping, item was delivered in about 20 hours from ordering.
The item arrived quickly. Thank you etr ailer.
The cable fits the desired application on my 2018 Tacoma. A couple of inches longer would have been nice - it was barely long enough for where I mounted the controller. The location shown in the pic was the only location that didn't get in the way of of knees, feet or air bags. By the way, the other item in the cubby is my ham radio faceplate.
It serves the intended purpose. Easily installed.
Perfect fit
Daniel - 10/03/2022All good. Original part didn't have the correct cable, but after a quick call, was able to order this adapter and its all good!
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 - 12/19/2020Friendly, knowledgeable customer service. My trailer brake controller came very quickly and was exactly the one I needed. Pricing was also very reasonable
Fit like a glove
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