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Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - GM

Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - GM

Item # 3026-P
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3026-P - Wiring Adapter Tekonsha Trailer Brake Controller
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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 's dash. 1-800-940-8924 to order Tekonsha accessories and parts part number 3026-P or order online at Free expert support on all Tekonsha products. Guaranteed Lowest Price and Fastest Shipping for Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - GM. Accessories and Parts reviews from real customers.
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  • Reviews (146)
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2010 Chevrolet Traverse - Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - GM

  • 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 '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

Brake-Control Adapter Port

This adapter plugs into the 6-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.

3026-P Tekonsha Brake Control Wiring Adapter with 2 Plugs

Installation Details 3026-P Installation instructions

California residents: click here

Customer Reviews

Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - GM - 3026-P

Average Customer Rating:  4.8 out of 5 stars   (146 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.


The Tekonsha Primus IQ was very easy to install with the GM wiring harness. I had everything installed in about 45 min. and it works great on my 2015 Chevy Traverse. had my order at my door within 3 days and offered free shipping. Can’t ask for much more than that.


Our new Tekonsha brake controller was super easy to install. We are new RVer's and are will use it today for the first time when we pick up our travel trailer from the dealer.
Looking forward to many safe miles because of that device.
We are telling everyone we meet about the great prices and service at
Ron & Lynda Kimball

2014 GMC Acadia

On Monday I ordered a Teknosha Prodigy P3 Proportional brake controller and interface cable from I received these items via UPS ON Wednesday ( I chose to pay for two day shipping because I'm picing up a new travel trailer on Saturday).
Today (Thursday) I installed the controller in my 2014 GMC Acadia. It was fully installed in les than 20 minutes. I will functionally check it this weekend. responded quickly to my order and I received the items on time.


Simple plug and play went smoothly


Very fast shipping exactly what I order ed

2015 Buick Enclave

Exactly what we needed, works great. The Tutorials walked us thru the install and how to setup.


exact plug adapter needed for my install

2015 GMC Acadia

The wiring harness plugged into the 2015 GMC Acadia connector for my 7 wire electric brake controller. I had to drill a hole in an access panel under the steering column so that the harness could attached to the brake controller. Everything worked as anticipated. I did have to purchase a special upholstery tool kit from NAPA (plastic tools) to remove the connectors on the access panel. I would recommend this harness and the corresponding electric brake controller for any GMC vehicle that can pull a trailer that has electric brakes.

The brake controller has been working great! I have not had any problems. Setting the braking strength is easy when moving from a loaded trailer to an empty trailer. I would recommend this controller for all GM vehicles capable of pulling a trailer with electric brakes.
Bill M - 04/27/2017


Great product and service. etrailer website and its videos were excellent in helping chose the right product set up and instillation. The Tekonsha Plug-in Wiring Adapter for Electric Brake Controller was just the ticket for my Chevy Traverse. Easy instillation and Works as advertised. Very happy and would buy from both Tekonsha and etrailer again without reservation.


Just what I needed to hook my new brake controller up and get ready for our camper. Couldn't be easier. Plug in to the Traverse's wiring harness, and plug the other end in to the brake controller. Perfect match!

The connection is as strong as it was when I instaled it.
John J - 03/02/2017


Perfect fit. Clear instructions. Quick, easy installation.


Great service. Talking to Greg sold me on the products I needed.


Easy to install and works great.


Very easy to install. Haven't got a trailer to set yet, but from other reviews, looks like it will be easy.

2013 Chevrolet Traverse

I ordered item 3026-P to connect a 2013 Chevy Traverse with a Tekonsha Prodigy P2 Brake Controller. My Traverse has the factory installed Tow Package (V92), so the harness plug is already populated and ready to plug into the 3026-P.
The pre-wired harness fit perfectly to my 2013 Traverse. After hunting for the factory plug hidden under the dash, the harness installed easily and locked into place. There is plenty of slack to route where desired on either side of the steering column. I chose the left side for a more flush bracket install against the plastic under-dash cover. The harness installed perfectly into the Prodigy P2. The unit instantly powered up and appeared nominal in operation.
I look forward to using the combination of these 2 items to safely haul around a travel trailer in the near future, which is why I preinstalled these.
One thing to keep in mind is that there is live voltage on the black wire when the harness is mated to the vehicle plug, so if you install the harness but remove the Brake Controller (when not used or used between 2 vehicles), be sure to cover the open harness end with a rubber cap or electrical tape, to keep from shorting it to any ground point.
Great product, excellent pricing, and easy to find for my specific configuration!

2017 Chevrolet Traverse

Bought item from etrailer, although there seems to be some confusion as to it's use for a Prodigy P3 90195 Brake Controller install on a 2017 Chevrolet Traverse LT with Tow Package. I'll put it all to rest right now. Mine installed in mere minutes. Grey plug taped to wire harness running up against firewall right above the parking brake assembly. Matched and fit perfectly. Once I noticed the issues I tested the connectors in that plug to insure I had a ground, constant power supply and a power supply when the brake pedal was depressed and that is when I knew the others who had issues with the simple install I've described had much different setups then did I.

Chevrolet Traverse

I ordered the Tekonsha P-3 brake controller from etrailer because they would ship it with the correct cable assembly for my Chevy Traverse at a very good price. It came with good directions and installed easily and quickly. I've taken my trailer out one time now and the Tekonsha brake controller performed flawlessly. While this is a small sample size so far, I would highly rate etrailer and the Tekonsha brake controller.

GMC Acadia

Got the Tekonsha P2 brake controller. Very simple to install since my Acadia had a tow package on it from the factory. Just plugged it in! Mounted with Velcro since I didn't want to drill into my nice new dashboard. (Requires frequent pressing to keep stuck - lol.) Can't tell you how the controller works because I ended up not buying the trailer I was looking at. :(
Zac at etrailer was extremely helpful and courteous. Would definitely recommend them and will buy from them again. They beat all my local prices and shipping was fast.
Thanks etrailer!

2013 Buick Enclave

I received the Tekonsha P2 controller and the 2 - click, made-to-fit wiring harness for my 2013 Enclave. It did, in fact, fit perfectly and the controller is a HUGE step up fom my previous non-proportional controller. Installation was literally 10 minutes! (Including reading the very clear instructions). Customer service from Tamara W was exceptional. She confirmed the correct part numbers and answered all my questions. Good price, good product and great service. Reward them with your business !

2014 GMC Acadia

I have used several times and I have found it very easy to order parts and receive these parts in a short period of time. This last order consisted of all the wiring harnesses controller and hitch for a 2014 Acadia. It also comes with very good installations papers. Only thing I wish it would have had extra with this order with the wiring harnesses need to have Dielectric grease to plug in to car to had had a small tube sent with those harnesses.


Was wired wrong from the get go. The picture shows the wiring at the controller plug as: Black, Red, White, and Blue. The one I received had the Red and White wires reversed. The vehicle side plug was also wired wrong: 2 wires went to empty positions on the vehicle plug. After sorting it all out with the schematics that came with the controller, and MUCH frustration with the switched wires, I manage to get it working. The controller works great! Just give the wires a look over for proper sockets/wiring.

2011 GMC Acadia

This cable made it super easy to install the brake controller into my 2011 GMC Acadia Denali and didn't have to mess with splicing wires.

Made installation fast and easy. Worked perfectly.
Mike A - 08/27/2016


My mechanic installed in 10 minutes-he said it was simple and easy--worked on my Traverse smoothly with little adjustment on my part. I hadn't pulled a trailer for over 15 years.


Very quick delivery of quality parts. I'll be sure to use etrailer again if the need arises. The only problem I had was finding out how to remove the plastic panel below the steering wheel. There were three plastic plugs holding it in place, but sometimes plugs in other vehicles broke by just pulling them. In this case, there is a plastic washer that should be pried out about 1/4" with a screwdriver. Once it is pried out, you can grab the plug and pull down with your fingers. Really a great improvement by GM over older plugs.


I was very excited to find this product as I don't know much about vehicle wiring. At first, I was not sure if this item would work with the Brake Controller that I purchased but after contacting customer service, I found that it was exactly what I was looking for. The item itself is great as there is no connections that need to be made up, it is plug-and-play. The response I got from customer service also included images of exactly where I would find the corresponding connection and sure enough, it was right where they said it would be. Keep up the great work!

Show More Reviews

See what our Experts say about this Tekonsha Accessories and Parts

  • Brake Controller and Wiring harness Installation Instructions for a 2011 GMC Acadia with Tow Package
    Yes, it really is just that simple. You will just plug the larger gray connector from the Tekonsha Wire Replacement, item # 3026-P, into the connector located under the dash and then plug the small black connector into the back of your brake controller. The vehicle harness will be located underneath the dash and left of the steering column, taped to another harness near the emergency brake pedal on your 2011 GMC Acadia, see photo at right. Since your vehicle is equipped with the OEM...
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  • Where is the Tow Package Wiring on a 2011 GMC Yukon to Install a Prodigy Trailer Brake Controller
    On a 2011 GMC Yukon, there will only be bare tow package wires tucked up under the dash instead of a plug. Look below the steering column and to the left of the brake pedal for the wire bundle. The wires you need will be held together with a white tag that also tells you what each wire does. The tow package wiring should be as follows unless otherwise noted on that white tag: Red/black tow package wire connects to black brake controller wire. White connects to white. Light blue/white...
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  • Where is the Brake Controller Port Located on a 2007 to 2012 GMC Acadia
    On a GMC Acadia, there is a trim panel below the dash and above the brake pedal. You will start be removing this panel carefully. There is a light attached to it so pull it down slowly so you do not break the light. With the panel out of the way, look for the connector to the left of the steering column taped to another harness near the emergency brake pedal. The harness has a plug on it that mates with the connector on harness # 3026-P. I have included some pictures showing the areas...
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  • Where are the Trailer Brake Controller Fuses Located on a 2014 Chevy Suburban
    On the 2014 Chevy Suburban there are brake controller fuses in locations 6 and 63 under the hood. If the one at 63 is good then it must be the one at position 6 that is either missing or blown.
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  • Troubleshooting Brake Controller of 2018 GMC Adacia Not Working with Brake Pedal
    So the red wire of your brake controller needs to be connected to a circuit of your 2018 GMC Acadia that sees voltage only when the brakes are applied. If you used a custom install harness on your Acadia like the # 3026-P to install the controller then most likely you have a blown third brake light fuse since that's connected to the stoplight circuit for the brake controller. If the controller was hardwired to a stoplight circuit you most likely need to check the condition of the connection...
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  • Does a Brake Controller Plug Into a 2007 Chevy Silverado New Body or Does it Hardwire In
    The 2007 Chevy Silverado New Body does not use a harness to plug in a brake controller. That stopped in 2006 and 2007 Classic models. Instead your truck has a tow package wire bundle under the dash, to the left of the steering column, held together with white tape. You can keep the harness that you have and just cut off the end that would normally plug into the truck. Brake controller white goes to truck white for ground. Controller black goes to truck red for 12 volt power. Controller...
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  • Brake Controller Installation for 2018 Chevrolet Traverse
    The procedure will depend on which Traverse model you have. 2018 Was a split model year for the Traverse, where they actually put out two models the Traverse and the Traverse Limited. The 2018 Traverse is the first model year of the new generation, while the 2018 Traverse Limited is the last model year of the old generation. The 2018 Traverse limited would be visually and mechanically identical to a 2017 model. If you have the Limited model, you'd use the # 3026-P connector, and plug it...
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  • Troubleshooting No Stoplight Circuit for Brake Controller of 2018 Chevy Traverse
    I know you said you checked the fuses, but did you check the third brake light fuse? That's typically what causes the stoplight circuit for a brake controller install on a 2018 Chevy Traverse to stop functioning.
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  • Troubleshooting Brake Controller of 2014 Chevy Tahoe Not Active
    Under the hood of your 2014 Chevy Tahoe there are some fuses that need to be in place for the brake controller wiring to be functional as well as there are some wires that need to be connected. It sounds like your fuses are good but the wiring is not in place yet. If you check out the attached help article you can see what needs to be done.
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  • Wiring a Voyager Brake Controller on a 2011 Chevrolet Traverse With a # 3026-S Wiring Adapter
    Yes, you will match the like colors on your Tekonsha Voyager, item # 39510, with the wires on the Universal Brake Control Wiring Adapter, item # 3026-S, for installation on your 2011 Chevrolet Traverse. This harness is for the older Voyager brake controllers with blunt cut wires. We have installation instructions, see link, for you to review. If you have a newer Voyager, item # 39510, with the connector on the back you should use the Tekonsha Wire Replacement, item # 3026-P, to plug into...
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  • Tekonsha Brake Controller Wiring Adapters for 2016 GMC Sierra and 2017 GMC Acadia
    Brake controller wiring adapters that plug in under the dash can have different vehicle-side plugs depending on the generation and model of vehicle. For a 2016 GMC Sierra 1500 part # 3016 is correct. For a 2017 GMC Acadia that has a factory 7-way the wiring adapter to use is part # 3026-P. Tekonsha makes two 3026 wiring adapters, part # 3026-S which is a pigtail and part # 3026-P which has dual plugs.
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  • Brake Controller Wiring Harness for a 2006 Chevy Silverado 2500HD
    For a 2006 Chevy Silverado 2500HD you will need brake controller wiring harness # 3015-P for a Tekonsha, Reese, or Draw-Tite brake controller. Chevy trucks also some times need additional connections under the hood to make everything fully functional. I have included a link to a help article that explains this for you. I have also included a link to a video showing the harness being installed on a similar truck.
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    For your 2003 GMC Yukon with factory tow package you would need brake controller wiring harness # 3015-P for your Voyager brake controller. The other one, # 3026-P, is not a fit for the Yukon. There may also be some additional connections that will need to be made under the hood to make everything fully functional. I have included a link to a help article that explains these connections.
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    If you ordered adapter # 3026-P with the brake controller, then this is the correct plug for the 2008 Saturn Outlook. On some vehicles, there is an extra wire for illumination of the brake controller, just in case a particular brake controller requires it. As long as the brake controller works correctly when you plug it in, you are good to go.
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  • How Does the Tekonsha Brake Controller and Harness # 39510 Wire to a 2011 Chevy Traverse
    To hook this Tekonsha Brake Controller with Wiring # 39510 and # 3026-P to your 2011 Chevy Traverse you should be able to connect the included harness directly into the port in the black box located under your dash. If there are wires and a harness already at this port you should be able to unplug the harness from the port that these wires go to and simply plug the Tekonsha harness into your vehicle and then plug the harness into the brake controller and you would be ready to go.
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    Chevy used to have a plug in port for a brake controller harness for trucks and full size SUVs but they stopped doing that several years ago (2006 was the last year). Now there should be a bundle of wires tucked up underneath the dash held together with a tag. The tag also lists the functions of the wires on it. You will just need to splice the brake controller wires to the tow package wires by functions. On the controller, the white wire is ground, black is 12 volt power, blue is output...
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  • Which Tekonsha Brake Controller Wiring Harness for 2008 Suburban 1500
    Chevrolet stopped installing the plug-in brake controller port on their full-size SUVs after the 2006 model year. There should instead be a bundle of wires tucked up underneath the dash and held together with a tag. This tag lists the functions of each wire. You will just need to splice the brake controller wires to the tow package wires by function. Please refer to the provided photo. If you need a longer pigtail harness for a Tekonsha controller you can use part # 7894. This harness...
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  • Brake Controller and Install Harness Recommendation for a 2012 Chevy Silverado 3500
    There is no install harness for the 2012 Chevy Silverados for brake controller installs, but the wires are already pre-wired under the dash of your truck for easy installation. Check out the install video I attached that shows a controller being installed in a 2012 Silverado just like yours that will walk you through the entire process. For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake controller because of how well it...
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  • Wiring Adapter Recommendation/Installation for Draw Tite Activator part # 5504 in a 2014 GMC Acadia
    The correct harness to use to install your Draw Tite Activator part # 5504 would be the Tekonsha Plug-In Wiring Adapter part # 3026-P. The harness should be under your dash on the left side of the of the steering column. Check out the picture I attached that shows where it will be. Only four circuits will be needed to install the brake controller. Brake output, ground, 12 volt power, and stoplight switch. The extra wire could be for an illumination circuit. There are some brake controllers...
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  • Brake Controller Recommendation for 2017 Chevy Traverse with Tow Package
    For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake controller because of how well it works and how easy it is to setup. This is a proportional brake controller that senses the amount of braking the tow vehicle is applying and applies a proportionate amount to the trailer brakes. This will be the last brake controller you buy. It can easily be transferred to future vehicles as well. All you need to install this in your 2017...
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  • Is there a Plug and Play Harness to Install a Brake Controller on a 2019 Chevy Traverse
    We know that the 2017 Chevy Traverse with factory 7-Way trailer connector had a plug-in location for a brake controller but nothing is shown for the 2019 Traverse. I would check under the dash, to the left of the steering column, for that wire bundle mentioned in your manual. It is likely held together with a white tag (that is traditionally how GM has handled the wire bundles). If the wire bundle is present the tag should list the functions of the wires. On a brake controller such as...
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  • Where to Find Brake Controller Install Port on 2018 GMC Acadia
    Your 2018 GMC Acadia actually has blunt cut wires for you to splice in a brake controller like the Tekonsha Prodigy P3 # 90195. The last Acadia to use the Adapter # 3026-P that you referenced was the 2017 Limited which was the same as the 2016 model year. The 2017 New Body and newer have the blunt cut wires up under the dash. I took a look at the online version of the owner's manual for your 2018 Acadia and on page 278 it says that the blunt cut wires can be found above the parking brake...
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  • Where to Wire Trailer Brake Controller In 2017 Chevrolet Traverse
    I took a look at your owner's manual and the 2017 Chevrolet Traverse has a bundle of blunt cut wires behind the instrument panel above the parking brake assembly for the electric trailer to wire a brake controller to. According to the owner's manual the harness contains the following wires: red/black: power supply white: brake switch signal gray: illumination black: ground The wires with the corresponding functions from the brake controller adapter like the one included with part # 90195...
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