I'd like to piggy back this battery disconnect issue... I have a 2015 337BAR 5th wheel (Salem Hemisphere) and I'd like to ensure that my batteries (2) are disconnected when the camper isn't in use. I just recently installed a blade-type disconnect on one battery (front storage area); will this suffice for both batteries? Or, is this dependant upon the wiring i.e. parallel vs. series? Or... are they totally independent? It would be nice if I could locate a schematic, but none found as of yet... I suppose, installing an additional disconnect on the 2nd battery wouldn't hurt.