Thanks fellers for thoughts, appreciated...
I have a ProSine 2000 inverter/charger that charges the 4 DP27 Deka deep cycle batteries for the coach power, and my question was, is the 12v
charge from the inverter/charger connected to the auto battery too?
Or is the 12v auto battery only charged from the main engine?
I had a failed battery last year when I bought the coach, and replaced it, which fixed the problem. The way this has suddenly gone makes me think that there is a mechanical cable problem though...Batteries usually go in a gradual decline, no?