So first time question. E19 has been in s storage for a few months, don’t get me started on duramax 2.8 issues. Went to storage facility today and cleaned the batteries (2 x 6 volts batteries) for mild corrosion. Reconnected the disconnect switch and have no dc power. Connected to shore power and all works. Turned on the inverter and power is provided to the microwave so it seems the batteries function any thoughts?
This is where a cheap 10 buck multi-meter is worth it's proverbial weight in gold.
Can you measure your battery voltage at the terminals? If so, it's simply follow the power. Does power reach the disconnect switch on the "in" side. Is there power on the "out" side of it. The easiest way to find an voltage problem is start where you have some and follow the path until you don't.
Sounds like the disconnect switch is in the disconnect or off position. According to the wiring diagram the disconnect switch does not affect battery power to the inverter.