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cbwallace's avatar
cbwallace
Explorer
Aug 18, 2019

Trailer brakes stop working when headlights are on

My Reflection has developed an issue where the trailer brakes stop working when my headlights are on. In the truck I get a Check Trailer Wiring message. When this occurs the trailer brakes don't work....
enblethen's avatar
enblethen
Nomad
Aug 18, 2019
I miss read the original post. Read as if it was brake lights and not the electric brakes.
Does sound like the system is backfeeding. It could be ground or a short between the brake (blue) wire and the tailight wiring.

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