locations,not knowing what year or model
1 .battery control center,either front or side compartment(not likely)
2, under the refrigerator,behind the AC panel
3.if AC panel in bedroom up high,,,behind the panel
4 next to the battery control panel up front in a small box,no markings a such,usually to the left of the battery control center
5 fastened to the roof of the side compartment near the slide out motor
depending on year and model,,look for a relay with 6 wires,all wires fastened in line with each other
the older ones have a fuse and a circuit breaker,kinda a green circuit board looking thing,,,,,the newer ones are a black plastic box
either way they are usually marked as being manufactured by Power Gear
hope this helps
Rich