I have a 2004 Outfitter Caribou 6.5 sitting on a 2020 F150. I am having some trouble wiring the truck to the camper to charge the battery while driving.
The camper is fairly old and was purchased recently from the original owner who was charging the same way on a 04 Tundra. So I am assuming it is possible.
I am hoping to charge the battery directly through the 7 pin round trailer plug at the back of the bed but the trick is that the camper plug on the exterior is an old 4 pin round plug. There are 7pin round to 4 pin round conversions available but these are all wired to control trailers - lights, blinkers etc. None are wired to charge a battery and it seems that the blade on the 7 pin that is used to supply the 12V aux power is empty on this setups.
My plan so far is to splice into a fully wired 7 Pin round plug/wire and use the 12V aux blade and the ground to charge the battery. There are no brake lights or running lights on the camper to this is not needed. I am far from an electrical expert but have done a modest amount of simple household and auto wiring in the past.
Does anyone have any idea what the wiring pattern for the 4 pin round plug would be to accomplish this safely and effectively? The only thing I know about the wiring of the existing male plug on the camper is the ground location. I can access to trace any of the others.