Recommended Trailer Wiring Harness for 2020 Buick Enclave

Updated 05/07/2020 | Published 10/18/2019

Question:

Helloooooooo. 2020 Buick Enclave need the right 4-Way harness that plugs in. Do you have? What is the part? Thanks.

asked by: Roger

Expert Reply:

We sure do!

For your 2020 Buick Enclave the Tekonsha T-One Vehicle Wiring Harness # 118761 will work perfectly. This custom harness is going to plug right into a factory port that's located beneath the vehicle on the driver's side. This is a completely plug-and-play install and it will provide you with a 4-Way connector to power your trailer's signal lights.

I have attached an installation video that you can also follow along with.

expert reply by: Chris R

John W.

5/5/2020

Do you have a diagram for locating the factory brake controller wiring and wire color diagram for my 2020 Buick Enclave Avenir. The vehicle came with the trailer package. Are the wires behind the drivers kick panel? and do they have a plug or are they just cut and I have to splice in a controller?

Chris R.

5/7/2020

I tracked down the owner's manual for your 2020 Buick Enclave and it does say that if it's equipped with the tow package there are 4 blunt cut wires inside the front driver's side instrument panel that are used to hook up a brake controller. You'll just need to splice in the controller's pigtail to these wires. The manual states the blue wire is for brake output to the 7-way, the red/green or red/blue wire is for 12V power to the controller, the white/blue wire is for brake signal input to the controller, and the black wire is for ground.