toddb wrote:
I'm just looking for a reason as to why this is done on a truck camper.
Since the other end of the cable is usually inside the truck box and inaccessible when the camper is loaded, having the other end unpluggable is desirable in situations where the charge lead from the truck is hot 100% of the time. On older trucks, this was a thing.
On my truck, it's the only way the camper gets 12V power. There is no provision for onboard batteries on my camper. No place to put one. Nowhere for it to connect. This is factory for this particular line of campers (Palomino) at the time it was built (2000).
My camper plug is in the bed, where it would be for a 5th wheel or gooseneck. It is blocked by the camper when the camper is loaded, and inaccessible. I have already ruined a battery on my truck by forgetting to unplug the umbilical even with the convenient connection on the camper body by the driver's door.