Does Trailer Wiring for 2019 Chevy Trax Have to Run to Vehicle Battery

Updated 12/15/2025 | Published 11/06/2024

Question:

Can the 2019 Chevy Trax Tekonsha wiring harness with the powered modulite be used with a stand alone battery or must it be hooked to the vehicle battery?

asked by: Bill A

Expert Reply:

Hey Bill, the part # 118659 would in theory work ran from a standalone battery but if it was one that wasn't charged regularly it would eventually end up dead and the trailer wiring would stop working.

It's best to install it like it was designed and run it to the vehicle battery.

expert reply by: Jameson C

Jameson C.

12/15/2025

Hey Bill, how did things go with the Tekonsha wiring harness on your Trax? Did you end up running it to the vehicle battery or trying it with a standalone one? Your results could help others looking at the same setup.