Thank you blw2. Might be on to something here. After driving for 6 hours today I noticed that the house battery is showing 3/4 charge. After being plugged into shore power it's still showing the same after unplugging (it shows full while on shore power). Perhaps my original factory battery is failing to hold a proper charge. I don't have a voltmeter out on the road - I'm a LONG way from home at Zion in Utah at the moment. It's something to check! Coach was made last August but sometimes batteries fail....
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