Steps working no lights or power to fridge in 97 Adventurer

[TXbound]

Hello, we just bought a 97 adventurer, it has solar panels and the panel controller seems to show charged but the only thing that works is the steps and the stereo/nav system in the dash. The fridge, guessing is 2 way shows no power as does the heater fan and roof vent. This is on DC only no shore power connected. Thinking there could be an issue with the isolator/inverter? Haven’t connected to shore power Yet since it’s still we haven’t moved it yet. We Haven’t tried the generator yet What kind of test can I do to isolate the problem? Thanks

 

[Kevin D Pem]

It sounds like the house batteries are not switched on. Best way to find the switch is ask the PO

 

[TXbound]

Yes that's what it was the switch is on the inside step. Thanks

 

[Hcnovakleen6]

What is the po?

 

[osuallen]

previous owner