Forum Discussion
dougrainer
Aug 29, 2014Nomad
I would check the CENTER unused pin on the trailer side. Make sure it is not connected to anything in the trailer or the tow truck. This pin is used for reverse lights if the trailer has them or an activation wire for a aftermarket part installed on the trailer, which you do not have. VERIFY that the GROUND pin on the truck side and trailer side is connected to a good ground. You cannot rely on the hitch ball to make a good ground connection. Doug
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