First, if you have a residential refrigerator, you probably have 2 disconnect switches; one just for the refrigerator and the other for everything else.
But, there may be some circuits connected in front of the disconnect. As this drawing shows, power to the emergency breakaway switch, to the tow vehicle 12V circuit, and if you have generator prep, to the generator start wiring, all connect before the disconnect switch. Your wiring could be a bit different than what's shown here.
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