The switch on my Class C is on the left side of the entry steps (inside the coach), about 3ft up from ground level - next to the porch light switch and awning extend/retract switch. It has a LED on it, and it is a momentary switch. When you depress the switch up, I can hear a contactor (relay) closing.
Not sure if this is how your coach is, but see if there is some kind of switch in that area.
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