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Message: <blockquote data-quote="05_ZX636" data-source="post: 5922375" data-attributes="member: 567262"><p>I have battery under hood (large new battery), powermaster d3100 in the back and adding at least 1 more 3100 in the back. Probably putting d3400 in the front also. I have 2 runs of 1/0 gauge going to the 3100 now in the back. Can i just run positive wire from that 3100 to the other one or two that I am getting, run grounds from new ones to the one I already have, and just use the 1 ground I have now? Or do I need to ground each battery in the back seperately?</p></blockquote><p></p>

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