Why Would Stoplights Light Up all The Time After Install of New Trailer Wiring Harness

Updated 09/25/2023 | Published 09/23/2023

Question:

I just installed a new wiring harness on my little trailer. Everything lights up but the stop lights glow brightly continuously without depressing the brake pedal. Any clue? Thanks.

asked by: Gary S

Expert Reply:

Sounds like maybe you have the running light circuit ran to the stop/turn light circuit so you are getting the brighter illumination all the time. Best option will be to check and make sure everything is connected properly. Standard trailer wiring colors are white for ground, brown for running lights, green for right turn/stop, and yellow for left turn/stop.

expert reply by: Jameson C