This is a good one. Hmmm
Just to add more info.
How about all the other 12 VDC items?? Like
Radio?
Does the refrigerator work on Propane? It requires 12 VDC
Propane Space Heater? It requires 12 VDC
Water Heater? It requires 12 VDC
Electric awning??
Bathroom exhaust fan?
Control Panel indicator lites?