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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.
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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.
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
Extremely friendly and helpful service, extremely fast shipping and easy plug-in place set up worked perfectly
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.
Very easy installation in about twenty minutes. Connected effortlessly to both the brake controller and the truck wiring.
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.
It's adapter made the installation of the redarc definitely plug and play
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.
Great selection and communication.
Ron
3/26/2025
No issues.
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.
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.
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 had the Primus IQ trailer braking system in my 2018 GMC pickup. When I traded it in and got a 2021 GMC I needed to update the wiring harness The unit worked fine but the harness was different. So I ordered a new direct connect harness and it was simple as plug and play! The Primus IQ braking system works absolutely perfectly as I said all I needed to do was update the harness and I was able to move the trailer braking system from the 2018 to the 2021 GMC pickup. The installation of the whole thing took a matter of minutes. Very impressed with the braking system as well as the information given to me from etrailer on how to do it. A technical support staff and front office folks are very attentive and educated on the products that they sell. I'm a return customer many times over and appreciate all they do.
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.
Exact fit. Made installing trailer brake a breeze
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.
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
I took the plug that came with my 2019 Chevy PU and soldered the two pig tails together and they did not work. I finally ordered the new harness and it worked!
Thanks for all of your help with getting back on the road quickly! I could have saved a lot of time and bother getting this harness with the break controller. Once again thanks for helping with the trouble shooting. With etrailer you get a life person to talk to if you need. I communicated with email, and phone.
This wiring adapter works perfectly!!! Plug and play. I had one on my 2016 Silverado 1500 4x4. I got a new 2021 and this model required a different adapter. Etrailer had a great price and they got the adapter shipped to me quickly.
The wiring harness worked perfectly for my 2019 Silverado. The instructions/pictures on the etrailer website showed me exactly where the plug was on the truck. I couldn't be happier with my purchase !
Worked perfectly for my 2024 Sierra. Easy to plug and play.
There's not much to say about a wiring harness other than I liked the black mesh wire loom to keep the wires looking nice and contained; and it was plenty long, without being excessive. It was easily tucked into the dashboard, out of sight. Made install a breeze.
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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?