Quote: Another option that I don't think has been mentioned in this thread is the use of a double pole / 4 terminal cutoff switch like a Longacre 45780 or 45782 (for higher output alternators). It solves the problems of a constantly "hot" alternator wire / solenoid drain.
I have a similar switch on my Dart. Two poles are large and two are smaller. The larger ones have the + cable running over that side of the switch. The smaller ones have 3 wires coming off the switch going to three different relays. 1 for a relay that supplies current to the MSD box and 2 wires go to the relays at the fuel pumps. Flip the switch and the engine and both fuel pumps shut down immediately. Very simple and not much current in the three wires going to the relays. Plus I have a 300A fuse in the + cable before the switch and a 5A fuse for the smaller wires. Pretty simple and effective.
