Hey Tom
Was your motorhome under warranty or are you doing the work yourself? I was afraid of diving in and working out the bugs as it might void my warranty. This could also get expensive if the problem is not resolved. It does in fact sound very similar to the problem I was in countering. Mine now charges 14+ volts at the chassis battery. I hope yours is just a bad alternator off the shelf but some how I doubt it. Please keep us posted on your results and fixes.
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