Store/use
I believe you might have a miss wire on the transfer switch. On mine weather or not you have moved the switch manually when plugged in it changes to use. The inverter part is not automatic on my unit, you have to turn it on on its control panel. It has a readout of the battery voltage also. So that's shore power. When not connected or generating, just driving then you have to manually change to use mode or the radio and dash outlets and coach lights all that stuff won't work if you don't put it in use manually.
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