Its maybe ur solenoid which deals w/ battery disconnect. My new 2017 chateau 22B is in shop. My disconnect switch worked interminably. That is it got stuck off. Played with it luckily it finally came back on. Issue became apparent when we could not turn on radio for the back!up camera. We also had full battery charge, but when we disconnected from shore line, all 12volt stuff died immediately including backup camera, as radio gets power from house battery not truck battery
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