Archived Trailer Guys Questions
Boat Trailering Guys,
Boat Trailer lights don't come on. Worked last year. This year at first appeared to work intermittently, then quit. I get what looks like appropriate voltage in the flat 4 wire adapter from the truck, & truck lighting appears normal. I get continuity checks within the trailer circuits. Looks like same results with 2 different trailers. Did find a loose wire at one of the tail lights which has been fixed.
Answered on: 7/2008
Check your ground wires at the 4 wire adapter and at each light. 99% of my trailer light issues have been traced back to the ground wire and either a broken or corroded connection.
Boat Trailering Guys