Forum Discussion
christopherglen
Jul 04, 2014Explorer
I would go for a stupid large cable between the batteries, and from the frame ground to the neg terminal of the bottom battery. By stupid I am saying 0 or larger. Most everything goes from the pos terminal to ground, so just doing the middle and ground side will help a lot. Fwiw, I am running 4/0 on everything - 4 cables between my 3 12 volt batteries, and 1 to ground. I also run 4/0 both ways to the inverter/charger, but that is another subject.
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