On my 2012, FR added a small circuit behind the radio. When engine (key) is on, power is from chassis battery. When engine is off, power is from house battery. However, like others have said, when on shore power, both house and chassis batteries are charged, so there is no chance of running battery down with radio.
2012 Forest River Sunseeker 2300 Chevy
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2012 Forest River Sunseeker 2300 Chevy
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