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Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers

Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers

Item # 3045-P
Our Price: $18.45
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Install your electric 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 harness beneath your vehicle's dash. 1-800-940-8924 to order Tekonsha accessories and parts part number 3045-P or order online at Free expert support on all Tekonsha products. Great prices and Fastest Shipping for Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers. Accessories and Parts reviews from real customers.
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Tekonsha Accessories and Parts - 3045-P

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

Install your electric 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 harness beneath your vehicle's dash.


  • Wiring adapter eases installation of your electric brake controller
  • 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 time-delayed brake controllers: Draw-Tite Activator I (5100), Draw-Tite Activator II (5500), Draw-Tite Activator III (5520) and Tekonsha PowerTrac (39523)
    • Compatible proportional brake controllers: Tekonsha Prodigy (90185), Tekonsha P2 (90885), Tekonsha P3 (90195), Tekonsha Primus IQ (TK90160) and Tekonsha Voyager (39510)
  • Limited 1-year warranty

Installation of Tekonsha Brake Controller Adapter

This adapter plugs into the 4-pin connector on your vehicle's built-in brake control wiring harness. The harness is located underneath the dash, to the left of the steering column, taped to another harness near the emergency brake pedal.

To install your electric brake controller you need to connect the wiring of the controller to your vehicle. Certain manufacturers offer pre-wired options, typically known as tow packages, wherein these wires are run for you from the dash to the trailer connector on the back of your vehicle. Often, a brake controller wiring harness is included with your tow package. This harness plugs into a port beneath your dash and connects to the four wires of the brake controller. If, however, you have a brake controller with a plug in place of the four loose wires, you can use the Tekonsha adapter.

This adapter requires no hardwiring. It is designed to plug directly into your electric brake controller for the simplest installation possible. Because there are no wires to connect, installation is not permanent. You can unplug and remove your brake controller at any time and securely stow it away.

3045-P Tekonsha Brake Control Wiring Adapter with 2 Plugs

Replaces Tow Ready 20274

Installation Details 3045-P Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Video of Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Trailer Brake Controller Installation - 2014 Jeep Grand Cherokee

Today on our 2014 Jeep Grand Cherokee, we'll be installing the Tekonsha Prodigy P3 Brake Controller, part number 90195. We'll be doing this in conjunction with the Tekonsha Plug-and-Play Direct Fit Wiring Harness, part number 3045-P, designed to plug into the Jeep Grand Cherokee tow port. It displays a no trailer connection until we plug it in. When it's connected, we'll see it boot up. It indicates we're in Boost 1 trailer wiring connected. We can adjust the gain as necessary or go through the menu display for the brake type.

We can also go through the boost settings from off, to 1, 2, or 3. Here at the bottom, we have the manual sweep which allows you to apply the trailer braking without touching the vehicle brake pedal. Here's our direct fit wiring harness. The gray end will match up with the manufacturer's gray plug. Go ahead and plug directly into it. Then, once plugged in, we'll go ahead and route the remaining portion of our harness over to where we'll be mounting the brake controller.

Keep in mind to stay away from any moving components such as the gas, brake, or parking brake pedal, or even possibly the steering column when routing your wire. As we route the wiring harness, we'll go ahead and take the zip ties and secure it as necessary. With the wiring harness installed, we'll attach the brake controller bracket using the 2 screws provided. On this application, we'll mount the plastic brake controller holder using the 2 screws, 1 on each side. Now we have both brake controller brackets in place, we'll mount the brake controller. First, take the wiring harness and plug it into the back of the brake controller.

Then we'll mount the brake controller into the bracket. There you have it for the installation of the Tekonsha Prodigy P3 Brake Controller, part number 90195, in conjunction with the Tekonsha Plug-and-Play Direct Fit Wiring Harness, part number 3045-P, on our 2014 Jeep Grande Cherokee. .

Customer Satisfaction Score:

Customer Reviews

Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - 3045-P

Average Customer Rating:  4.9 out of 5 stars   (400 Customer Reviews)

Install your electric 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 harness beneath your vehicle's dash.

2017 Chrysler Pacifica

I purchased the Tekonsha P3 electric brake controller to use on our 2017 Pacifica Touring-L Plus with towing package. Our Pacifica was pre-wired for an electric brake controller. So along with P3, I ordered the plug-in wiring adapter 3045-P made for the Pacifica. First I determined where to mount the P3, making sure the wiring adapter would reach the P3. I located the Pacifica's pre-wired harness. I had to remove an empty plug that was installed into the receptacle on the end of the pre-wired harness. I then plugged the the adapter into the now empty pre-wired receptacle and then the other end into the P3 (the P3 lit up immediately). I zip tied the wires of the adapter in a way that it would not interfere with anything under the dash. The install was then completed. I liked how easy it was to install everything. The P3 will be used to control the brakes on our R-Pod travel trailer. Adjusting the P3 was as easy as reading the instructions that came with it. The display, when the controller is not in use, will light up when using the vehicles brakes (trailer not connected). When the vehicle is not in use the display will eventually turn off. See the pictures I supplied.

The wire harness is working great. We have had no connection problems. Our Tekonha P3 electric brake controller has been working great. With our new larger R-Pod trailer it took me a while to figure out the proper setting for the controller as I had the setting too high. Once I zeroed in on the setting, braking is nice and smooth. It was a good purchase.
Dale G - 08/23/2018


Excellent product. Fast shipping and friendly customer service. This Brake controller is all you could want. Well built and has worked flawlessly since I bought it in 2022. Highly recommended.


Installed in a 2018 Jeep Grand Cherokee High Altitude to tow 5,000 pounds of boat and trailer. Had reviewed many different models and styles, but in the end, this unit looked the easiest to install. Although I just followed others lead on screwing into the plastic panel left of the steering wheel, it has held up and the location has been pretty good, but I have bumped it with my knee a few times. The functionality is superb though and that is what really matters.


This product is excellent. The install could not be easier unless you have very tiny hands :-). It was a little hard to reach the factory installed connection but I got it done. The harness comes with plenty of cable for mounting your brake controller wherever you need to in the driver seat area. We mounted ours low, but I can easily see it from my driving position. We are taking our first road trip with our new tow vehicle this weekend and will give it a good workout. About 200 mile round trip over the hills of Tennessee :-).


I had never had electric trailer brakes before and the thought of digging under my cars dashboard was distasteful. Your kit with great instructions made this an easy modification. Thank you

I seldom use the trailer but the brake system works just fine. Thank you
Robert - 04/26/2022

2011 Jeep Grand Cherokee

Customer service is top notch and knowledgeable..... product was exactly as advertised and installation was easy

Still working flawless after some time....... would not hesitate to buy
James - 06/19/2020


Took ownership of a new vehicle and left the old connector in the returned vehicle. The new vehicle came with the under the dash connector and wires. etrailer had a cable to connect to the brake controller saving me from having to figure out wiring, obtaining a new 4-pin male connector. Received the cable in 3 days. Quick shipping!


always top quality products, at fair prices, with speedy delivery, courteous, helpful, and knowledgeable service personnel and sales agents. Using your products, I plan to pull this trailer and these units on many trips.Thanks for your help in all this


Worked just like the experts said. Installed 3045P and 331-tph-adapter in my jeep grand Cherokee 2021 with factory installed tow package. Connected to my redarc tow pro liberty red25fr brake controller and factory harness. Mounted under dash out of sight.


The best costumer service I've received in years. Stacy was superb!!! and asked me all the right question about the parts I ordered. The "track your parts" was spot on. the only thing was I got my order in two days rather than three, as was promised. All parts were in stock and I received them in perfect condition, including an 8' trim piece. I don't normal fill out reviews, but this company went over and above!


Perfect match, works gteat

Still working great
John - 12/04/2022


I bought the prodigy p2 and the attaching cable for my 2015 jeep. The installation was easy after I watched the video. Since the prodigy can be tilted forward I mounted it on the right side of steering wheel on the dash just above the lower air bag. I used the plastic holder as it seemed better than the bracket in that location. You can see the readout thru the steering wheel when driving straight ahead without taking your eyes off the road. See pictures of the mounting. Regards George


Item work just as described and was a simple plug and play solution.

2015 Jeep Grand Cherokee

Pig tail fit both trailer brake and Jeep perfectly! Drastically cut install time down. Fully installed in under an hour


This product was shipped same day as ordered and delivered on schedule (4 days).
The quality of both the controller and the wiring harness is 1st class. The installation was extremely easy and took about 20 minutes. Can't speak to the functionality of the controller as haven't connected to trailer. Will update report after trailer connection.


Ordered online hoping I purchased the correct wiring harness. It was the one the website said would fit but we all know that's not always true. Got the parts than watched their how to video. Talk about easy job. Parts snapped right in video made a 30 minute job take 5. Easy day great service awesome shipping and correct parts. Not a simple bad thing to say. It was perfect all around.

2015 Jeep Grand Cherokee

Used this harness to install a Tekonsha Prodigy P2 Trailer Brake Controller in a 2015 Jeep Grand Cherokee. Been doing its job perfectly for a year now:)


It is the same as a factory part, just less expensive. Works without any modification! High-quality part.


By buying the extension wiring you are able to install the controller on the left side of the dash board and utilize the OEM connector under the dash. Placing the controller where recommended in the video is not optimum in that it is located too far down and away from the driver.
By simply removing the dash board side panel on a Jeep Grand Cherokee you can route the wiring from the OEM plug to the controller mounted with Velcro on top of the dash!


Easy to install, works like a charm.
to think about the lower airbag.
One should always buy the plug and play pigtail.

2015 Jeep Grand Cherokee

Came as advertised, plugged right into my Grand Cherokee mounted the controller and was done properly took 15 min total time.. Good product so far no complaints


Adaptor fit my 2016 Jeep GC Ecodiesel perfectly. Made installing the Tekonsha Brake Controller a breeze

2011 Jeep Grand Cherokee

This will be the first time I have pulled a vacation trailer with electric brakes.
The wiring harness part #3045-P and the Tekonsha Prodigy P3 Trailer Brake Controller part #90195 arrive in 3 days and was a breeze to install on my 2011 Jeep Overland. The video provided on etrailer website was very helpful in the installation. The product works very well with the proper settings for my trailer.

I could not be happier with the parts I ordered a year ago.
Larry R - 12/23/2017

2021 Jeep Grand Cherokee

Perfect fit in our 2021 Jeep Grand Cherokee L,no problems,all works well.

2018 Chrysler Pacifica

I recently purchased the cable Item # 3045-P for my pacifica. It functions as advertised but 12 to 18 inches longer, for my application is needed. I do not want to splice an extension if I can avoid. I would rather plug an pre-fabbed extension onto the end. Then when not towing, I could unplug the extension (and controller). I could fabricate my own extension if I could find the 4-pin male flat connector that would match the 4-pin flat black female connector on the cable.

Hints from other users helped me find a mounting spot that did not require an extension. Very satisfied with the harness.
James - 10/05/2020

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