Posted 2018-08-09 2:52 PM (#171794) Subject: intermittent electrical problem with trailer
all the lights work when I hook up and leave, but somewhere on the road, a fuse blows for the right side brake/blinker (on one truck with separate fuses) The primary truck used is a Ford with towing package and separate towing fuse for both brake lights. All wires and plug have been checked and test properly and I was advised by a reputable trailer service/dealer to try a circuit breaker with auto reset until the short shows itself permanently. I purchased an auto reset 20a blade circuit breaker but it does not fit in the fuse box...too tall. Both trucks used to haul this particular trailer have no problem with other trailers.
Any experience with this and any suggestions on where to purchase a shorter circuit breaker. The one I purchased online is an Eaton Bussman. No local auto parts stores seem to carry these.
Any suggestions on how to locate this? All wires behind tail lights are intact with no bare or crimped spots.
Posted 2018-08-10 7:36 AM (#171799 - in reply to #171797) Subject: RE: intermittent electrical problem with trailer
thanks for your replies. The trailer connection plug was replaced when trailer purchased from the dealer less than a year ago. It has been opened and checked for loose wire connections, but is it possible that the plug itself is defective or is this unlikely?
Posted 2018-09-10 2:24 PM (#171860 - in reply to #171794) Subject: RE: intermittent electrical problem with trailer
Location: Topeka Ks
Finding the bad spot is going to be labor intensive which is why the trailer repair shop suggested the self resetting breaker. They work great until the wire burn in to and you don't have lights. Many times the wire is ran in the roof corner channel and the wire drops down to the lights. This would be where I would look first for a cut spot.