I often suggest that folks explore and experiment with a multimeter to see the voltage readings of house and chassis batteries with everything off, then on shore power (generator) and with the engine running. Gathering information about voltage readings in the different conditions will prove if all batteries charge when a charging voltage is present. This knowledge will help when you suspect things have gone wrong.
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Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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