MY BRAKE LIGHTS WANT WORK ON MY TRAILER???
I PUT NEW WIRING AND LIGHTS ON MY BOAT TRAILER AND TAIL LIGHTS AND TRUN SIGNAL WORKS BUT WHEN I PUSH MY BRAKE DOWN MY TRAILER LIGHTS GO OUT?
Double check your wiring harness,Of course somethings not wired correctly start at the truck make sure the harness is in good condition use a mulitmeter to determine all leads work test the brake light circuit First 12volt?
It is likely not wired correctly. Check the wiring.
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