My pickup has the trailer towing package which includes the 7 pin connector. The 1 o'clock pin (when looking at the female side) is dedicated to trailer power for recharging RV or winch batteries. Whenever I have the trailer plugged into my pickup it's charging the trailer battery (when the key is in the run position). I recommend turning the tow vehicle off or unplugging the trailer before using the winch. A winch can pull hundreds of amps under load and the trailer connector isn't made for that. Seven pin connector.


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