We have a Palomino Puma 295KBH that has a fuse right off the battery that goes up into the camper. The 15 amp fuse keeps blowing when I plug it into the truck or into the house. I couldn't even get my...
Just a thought but if the GFCI was tripped for any length of time and allowed the battery to run down its possible when you plug shore power or connect the 7 pin plug you are putting more than 15A of power into the battery due to its discharged state. Do you have a standalone battery charger you can use to top off the battery? A volt meter to check the approximate charge state of the battery?