Agree with your thoughts, thank-you.
I've changed the solenoid/latching relay located by the battery compartment under the coach - it's new. Yesterday I removed the converter cabinet solenoid/latching relay, tested it against a second relay, and installed a second relay. Same result: Use/Store switch non-op.
I'm thinking next I'll disconnect the pair of mid pin yellow wires on the Use/Store switch and the pair of yellow wires on the converter cabinet solenoid/latching relay and test for continuity.
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