Forum Discussion
Bobbo
Jul 17, 2017Explorer II
First things first. Get one of these trailer light testers. This one tests either 7 pin or 4 pin connectors. This will tell you if it is the tow vehicle or the trailer that has the problem. You have just eliminated 50% of the possibilities.
About Travel Trailer Group
44,029 PostsLatest Activity: Jan 21, 2025