I have both a 2002 Chevy 1500HD and 2008 GMC 2500HD, both factory equipped with the towing package.
If I leave home with the pair of group 24 RV/Marine batteries charged and the TM fridge already cold and running on 12 volts on setting 5, when I arrive in camp 3 hours later the fridge is still very cold and my batteries are both fully charged.
I have no idea what the wire size is on the trucks, nor how many connectors there are. I do know that there is a 40 amp fuse under the hood for the charge line to the trailer.
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