Originally Posted by
daveS53
My fuse box is set up with a 30A fused circuit for the AC system, but vintage air wants you to hook up the 30A breaker that they supply, either to the starter or some other source that can serve big amps. Replacing the 30Amp fuse in the fuse box should do the trick. I did provide a source for big power users, at the top of the foot well. I terminated the 1/0 cable from the battery and with a 3/8" lug and ran a 3/8" brass bolt through the body, there. On the engine compartment side, a 1 foot long cable goes from there to the starter. Right now, I attach an 8 gage wire from there to the GM supplied fuse box that runs my ECU, TCU, fuel pump and electric fan.
IIRC, my Haywire system also wants you to hook up the lighting system, separate from the fuse box. They supply a fusible link that's supposed to go to a similar source of power. No wonder the fuse box only uses a 10 gage wire for it's main supply (also with a fusible link). Not sure I like that. I expected virtually everything to have a feed wire from the fuse box.