hooked up my trailer and the lights don't work, wondered if anyone could help? coming from the truck are a yellow, green, light green, and brown. coming from the trailer hook up are yellow, black, red, green, and brown.
some of the parts stores do sell adapters for that. otherwise buy a test lite grab some paper and test each wire for its function , do them one at a time. right turn, left turn=brake lites. ground circuit , electric trailer brakes, clearence lites. backup lites, 12v acc. to trailer.
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