[eschaider]

OP, follow Patrick's guidance and remove the 250 amp fuse from the starter circuit.

OEM's do not fuse starters for a reason. Patrick's pic in post #9 is the best explanation. A good starter on a big block engine, on a cool morning (not winter) will easily pull the kind of amperage Patrick is showing when everything it in tip top shape. That's why starter cables are so huge.

If you use a 250 amp fuse in a circuit that is designed to operate at and can dynamically draw over 900 amps, you don't need to be an electrical engineer to figure out what is going to happen. Get rid of the fuse!