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outstanding suggestion flan!
dropped the spare, unplugged the trailer plug and discovered....that the center pin was actually not seated properly, but in fact was bent outwards so no contact was made. bent it back and BOOM success!
Clearly installed hastily at the factory!
thanks a bunch
Howdy Forum!
I'm trying to chase down a frustrating issue on my 2019 2500. Recently noticed that the backup lights on my travel trailer no longer activate when backing.
1: I first hooked up a DC bench power supply and checked every pin in the trailer side 7-way. All worked fine.
2: no...