Quote Originally Posted by 92SupraComp View Post
What sized wire was in the boat already? My comp came with 0/2 Gauge from the battery to the block. My CC has #2 Gauge I believe and with the old starter the volt gauge almost went to off position. With the mini high torque starter, the volts dont drop past 10 volts. I hate the old plunger starters, so slow, and use so much power.
Well, my ground from the battery to the block was 1 gauge and 7 feet long. And I think that the main power feed was 0 or 0/2. But when the Previous owner installed a perko switch he put 4 gauge between each of the batteries and the switch and also between the two batteries. I also had 4 gauge from the starter relay to the starter solenoid. I did notice some rust/corrosion on the neg terminal that went to the block, so upsizing that and shortening the run by a foot (because I could) made sense.

I think I have the "newer" style starter with the external solenoid (it's not an old school 1 wire starter).

My problems could have simply been the relay. Maybe extra current from the smaller wires and/or some corrosion. I just figured I'd upgrade and upsize because I can and because I don't want to worry about this crap ever again.