Thread: Battery Woes

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Roger, I'm curious, how is the battery circuit wired, positive and negative from the battery are attached where?

Mike

Originally Posted by Mike52

Roger, I'm curious, how is the battery circuit wired, positive and negative from the battery are attached where?

Mike

Mike,
My battery is centered behind the dash mounted horizontally, terminals facing the seats. On the '33/34 there is a hollow "kickout" on each side of the firewall, and I have Moroso bulkhead connectors mounted there, penetrating the kickout, very nearly out of sight even from the front. The bulkhead consists of a solid 3/8" brass stud on each side, and a threaded plastic housing that penetrates the firewall/kickout panel and is retained with a "conduit hub nut". The positive and negatives from the battery go direct to the bulkhead on the inside of the body. In addition, on the positive battery terminal I have a #12 that feeds the ECU direct. Other hot feeds, like fan, fuse box, etc come off of the inner bulkhead connector - I moved the ECU feed to eliminate any cable drop, though the battery to bulkhead connections are only 18"(+) and 24"(-) long. On the (-) inner bulkhead there's a braided grounding strap that connects the (-) bulkhead to a body retaining bolt into the frame. On the outer end, the (+) goes direct to the starter, 12" away; and the (-) lands on a starter bolt into the bellhousing. I've seen it written that the (-) should terminate on a bellhousing bolt, but not a starter retaining bolt, but I've never understood how that makes any difference at all - one threads into the bellhousing, and the other into the block through the bellhousing.