bing tracking image
  1. Accessories and Parts
  2. Tekonsha
  3. Trailer Brake Controller
  4. Wiring Adapter
  5. Plugs into Brake Controller
  6. Vehicle Specific
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: $18.11
You Save: 30%
Accessories and Parts

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Orders above $50 qualify for Free Shipping
Shipping Weight: 0.36 lbs
In Stock
Accessories and Parts 3031-P - Plugs into Brake Controller - Tekonsha
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos


Need help with installation?
Locate installers near me
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. 1-636-306-4830 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.
  • All Info
  • Reviews (338)
  • Q & A (0)
  • Photos
  • Why etrailer?

Tekonsha Accessories and Parts - 3031-P

  • 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 vehicle'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

This Product Fits The Following Vehicles

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   (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.

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.
Wayne - 08/01/2022

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.
Gerald - 08/02/2022


Great product. Used with Tekonsha Prodigy P3. Installed on a 2017 Tacoma to tow our 2020 [email protected] 400 teardrop camper.

Excellent! Needed this to install my Tekonsha P3.
SLM-C - 05/02/2022


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.
Alex - 12/21/2021


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.

2019 Toyota Tacoma

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.

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.

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.

2019 Toyota Tacoma

Easy to install in our 2019 Toyota Tacoma and works great when towing our trailer!

Works great!! Very happy with purchase and ease of installing!
Allison - 12/10/2021

Scion iQ

Very 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.

Toyota Tacoma

2019 Toyota Tacoma works good!

2020 Toyota Tacoma

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.

2015 Toyota Tundra

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.

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.


It serves the intended purpose. Easily installed.


Perfect fit

Great Want to get another one for my second truck
Daniel - 10/03/2022


All 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

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.
-- Etrailer Expert Heather A - 01/24/2021


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

worked great sold the truck and nedw owner was very happy with the install and operation
Bill l - 12/19/2020


Friendly, 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

Show More Reviews

See what our Experts say about this Tekonsha Accessories and Parts

< Previous
123. . .10

Do you have a question about this Accessories and Part?

  • Why

    At we guarantee:
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate accessories and part information available.

    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 Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Lindsey S
Edited by:
Lindsey S
Employee Cole B
Installed by:
Cole B
Employee Wilson B
Updated by:
Wilson B
Employee Isabelle B
Updated by:
Isabelle B
Employee Alexander C
Written by:
Alexander C
Employee Robert C
Test Fit:
Robert C
Employee Aidan B
Video by:
Aidan B

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.