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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.
Features:
This adapter plugs into the 5-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.
California residents: click here
After working with your team, I was able to find my plug on 2023 GMC Sierra. It was cleverly disguised with a fake plug adapter probably to keep it from damage. Once found it was truly a plug and play situation. Your team were amazing. Thank You. Your team is why I continue to work with you.
Extremely friendly and helpful service, extremely fast shipping and easy plug-in place set up worked perfectly
Got a new 2024 Silverado to replace our 2002 model. This plug is a perfect fit do I can use my Prodigy 2 in our new Truck. etrailer is my go to for all my towing needs
Michael 
5/8/2025
Works great no issues after a year of use
Heather A.
5/14/2025
Easy installation for my 2022 GMC Sierra. Fast and accurate shipping. Product functions very well and is easy to calibrate.
Made the install of my brake controller a 20 minute job. The connector hooked up easily to my new trucks wiring harness.
It's adapter made the installation of the redarc definitely plug and play
I use my brake controller in two different vehicles so I needed a second wiring harness. This was as advertised, easy plug and play. My order was shipped and delivered quickly with no issue.
Great selection and communication.
Ron
3/26/2025
No issues.
Jon G.
3/26/2025
Well made and perfect fit. Easy installation connecting my brake controller with my truck and works perfectly as expected. Great customer service and great products. I am a return customer and recommend this company to anyone looking for products they supply and sale.
This was installed and working within 15 minutes of receiving it in the mail, it was so easy to install, and ordering it was a breeze with the help and knowledge from Stacey at your order desk, thank you Stacey.
Exact fit. Made installing trailer brake a breeze
I needed a harness adapter to move my Tekonsha brake controller from my old pickup to my new one. The customer service folks at etrailer quickly helped me with the exact one I needed and it was in my hands three days later, perfect fit and I’m up and running. Etrailer has been my go-to for all my trailering and RV needs hot several years and they’ve always come through!
I've installed 3 plug in Tekonsha adapters for 3 different vehicles and found them all to be to specifications making the installation a breeze
Worked perfectly for my 2024 Sierra. Easy to plug and play.
Quality product. Easy install.
Jack
7/13/2022
Works good. Happy with the location where I put it.
I haven't had this brake controller installed yet, but it looks like it's fairly straight forward and easy to do, even for someone that's not very mechanically inclined. We'll see how it goes. I received the brake controller device and the wiring device in minimum time, very quick to arrive!!
Richard T.
8/1/2023
The brake controller worked excellent, never a problem.
If you want to mount your controller at the center of your dash the harness will reach it but not long enough to hide wires under the dash,just to darn short
Worked as advertised for my 2023 Silver ado.
Quick delivery. I had someone install the brake controller but they appreciated the harness and said it made the job quicker.
Daniel
7/22/2021
No problems whatsoever
the controller has great reviews, I got it because my factory controller wasn't working well with the new camper that has electric/hydraulic brakes and I was experiencing a 5 second lag for the trailer brakes to come on. this controller works better with a 2 to 3 second lag, need to try a couple different combos on settings, have the boost at 3 (per recommendations) and gain at 2.5 and under hard braking it locks up the trailer tires. going to try boost on 2 and bump up the gain and see if that works better.
We added the Prodigy 2 as an aftermarket controller to our 2019 Chevy Suburban that we use to tow a climbing wall, kayak trailer and bike trailer. Installation was as simple as can be and it makes the towing experience much nicer. The only hiccup was that there was a hiccup with what adapter the system thought we needed and so we were sent the wrong one. Fortunately, etrailers customer service was top notch and they resolved the issue and made everything right!
I used this wire harness on a 2019 GMC truck to connect a trailer brake controller. After removing the protective cover from the truck's under dash connector I was able to plug in the harness with no issues.
work great for my application
Very easy installation in about twenty minutes. Connected effortlessly to both the brake controller and the truck wiring.
Came with everything I needed. Having videos on site is super helpful. Just need some videos on the newer vehicles to keep everything up to date but overall great site and excellent service.
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Gwendolyn Y.
7/10/2025
Thanks for saying that, William! I’ll be sure to share this with the team, they’ll appreciate the shoutout just as much as I do. What kind of trailer have you been towing?