You might check with your local GM dealership about the stock voltage to the 7way plug. I don't know what year they started reducing voltage since they use LED lights throughout but I've seen discussions about needing a special adapter in order to get 12 volts to the plug for your trailer.
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Jeff & Sandi (and Teddy - 7lb Schnorkie)
2018 Montana HC 305RL / HW Progressive EMS
2015 RAM 3500 Laramie Longhorn Crew Cab 4x4 DRW / Demco Recon Hitch on RAM Puck Ball
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