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Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In

Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In

Item # 3031-P
Our Price: $23.36
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Accessories and Parts 3031-P - Plugs into Brake Controller - Tekonsha
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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 's dash. 1-800-940-8924 to order Tekonsha accessories and parts part number 3031-P or order online at Free expert support on all Tekonsha products. Great prices and Fastest Shipping for Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In. Accessories and Parts reviews from real customers.
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2017 Toyota Tacoma - Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In

  • Trailer Brake Controller
  • Wiring Adapter
  • Plugs into Brake Controller
  • Tekonsha
  • Vehicle Specific

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 's dash.


  • Plug-in wiring adapter allows for quick, simple installation of your electric trailer brake controller
  • No cutting or splicing required
    • Custom connector end plugs into the built-in port beneath the dash of your vehicle
    • Other end plugs into the back of your electric brake controller
  • Compatible with time-delayed and proportional brake controllers from TrailerMate, Draw-Tite, and Tekonsha
    • Brake controller must have built-in plug for adapter to connect - will not work on controllers with pigtail wiring harnesses
  • Limited 1-year warranty

Installation of Tekonsha Brake Controller Adapter

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.

3031-P Tekonsha Brake Control Wiring Adapter with 2 Plugs - Toyota

Replaces Tekonsha 3017-P

Installation Details 3031-P Installation instructions

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In - 3031-P

Average Customer Rating:  4.9 out of 5 stars   (372 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.


I used this to connect a brake controller, ITEM TK63VR, to the brake harness under the dashboard of my husband's 2022 Toyota Tacoma SR5. It worked excellently and was very easy to do because the ends just snap right into the harness and the little ground wire fits right under the grounding screw. eTrailer's instruction videos are great, thats why this ol' grammy was able to do it herself! Thank you etrailer! PS I just wish that it was a foot longer.


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.

Toyota Tacoma

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.



Working great! No problems at all.


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.

2023 Toyota Tacoma

Installed my old Tekonsha P2 controller easily in the new truck in about an hour. Wire was just long enough to reach the preferred spot. Fantastic service as usual.


My Tekonsha P2 & wiring kit 3031-P for my 2017 Tundra Crew Cab arrived timely and installation was SUPER EASY. Connected my 27 foot trailer the same day to test it. Works awesome. Disappointed in Toyota for having a poor Brake Control System, but thankful Tekonsha was able to pick up the slack.


We love our Tekonsha brake controller. Works great on our 2018 Tacoma while pulling our 1025r John Deere subcompact tractor.

2015 Toyota Tundra

Delivered ahead of time and product is as expected.




2018 Toyota Tacoma

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.


Fit perfectly. did not have to cut into vehicle wiring harness and super quick install


Made the install that much easier, take your time pulling off the side cover to get to the wiring harness. Seems like the bottom front plug gave me the most trouble but love how much difference trailer brakes while pulling a heavy load make.

2018 Toyota Tacoma

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.


Excellent fit and function.


Received as expected ,, very well packa ged..


Great product. Used with Tekonsha Prodigy P3. Installed on a 2017 Tacoma to tow our 2020 T@B 400 teardrop camper.



Excellent! Needed this to install my Tekonsha P3.


very easy to install

2023 Toyota Tacoma

Great product and super easy to install with the adapter.


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

Etrailer Expert

Heather A.


Thank you for your review. You are correct Brake controllers such as the P3 you referenced 90195 will go into a sleep mode after about 15 minutes. It is not drawing enough power to affect your battery. We do strongly recommend to wire the brake controller to the vehicles battery instead of an accessory outlet to avoid damage to the vehicles electrical system. You could technically unplug the brake controller pigtail from the back of the brake controller each time but it will need to be reset for use since the settings will be lost.


to 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.



great up and running and was able to fit this in without hacking up my OEM harness.

2019 Toyota Tacoma

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.


received 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
etrailer information and delivery was great

Bill L.


worked great sold the truck and nedw owner was very happy with the install and operation

2017 Toyota Tacoma

Great, specifically for my truck and it plugged right in and worked without modification. Could not ask for better



Works fantastic, no problems, brakes the trailer with proper amount related to truck braking.


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.


Easy to install


Installation facile
Et le site internet
tres bien fait
C'est mon 2e achat toujours un bon service

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