batteries

Well how i understand it every battery u add is another load on the Alternator. So i would say that u should find urself some isolators for the batteries. I know of two types a Diode buss bar, big heavy and generates heat, and the newer solinoid style ones. Have yet to get my hands on the solinoid style. In my opinion i would say u should isolate them save the Alternator from burnin' out. All you would do for wiring is have the isolator on the 12V+ in and Ground the battery to the chassis. There is a good post about good grounds may help when ya go to ground them ^^ Good luck.