Reviewing the past comments, having the same issue with a new 2015 Mountaineer and 2008 F250. The trailer has only been pulled about 900 miles, have checked the wiring in the pin box, connection on the pig tail to the truck. Have had the truck into the dealership checking it out (since it is older then the 5 wheel).Not the best with electrical issues and don't want to void the factory warranty, but sure isn't doing any good just setting in the carport either. Any suggestions?
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