If it wasn't grounded the lights wouldn't work. Everything else on mine works, just can't figure out why the Raptor isn't charging the battery. Maybe the 7-Pin connector has a bad connector/wire?
I've also just noticed my '18 Raptor is not charging my trailer battery. My '14 F-150 did just fine so I can't figure out why a newer truck that recognizes the trailer won't purposely charge the battery
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