question: What's wrong with tying all the batteries together?
I went as simple as I could. The only 12v units in my truck are the lights and water system pump. Everything else is 120v and run to a breaker box. So when I'm "camping", I either run the generator or plug into shore power. As far as the 12v systems, I start the truck to restore battery power every other day.
Doc Weaver
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Doc Weaver '98 Freightliner FL60 pseudo toy hauler
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