Battery cut off switch
Here's one easy way to do it:
Buy one more good heavy relay or "continuous duty solenoid." These have two coil terminals, not grounded to the case. Run one small terminal to "ignition run." Run the other to the rear with no14 or 12, wire it to ground through the small terminals of the disconnect.
Hook one big stud of the continuous duty sol to the batt. term. of the starter relay, hook the other either to alternator field or the ignition system/ regulator feed. I did not show a fuse or breaker in that circuit, a good idea. If you feed the output of the solenoid to the "blue" ignition run, it will control BOTH ignition power and alternator field on 70/ later isolated field units, as well as the "input" of the regulator.
Run your starter cable to either the starter, the relay, or a big junction stud and interconnect as shown.
Here's one easy way to do it:
Buy one more good heavy relay or "continuous duty solenoid." These have two coil terminals, not grounded to the case. Run one small terminal to "ignition run." Run the other to the rear with no14 or 12, wire it to ground through the small terminals of the disconnect.
Hook one big stud of the continuous duty sol to the batt. term. of the starter relay, hook the other either to alternator field or the ignition system/ regulator feed. I did not show a fuse or breaker in that circuit, a good idea. If you feed the output of the solenoid to the "blue" ignition run, it will control BOTH ignition power and alternator field on 70/ later isolated field units, as well as the "input" of the regulator.
Run your starter cable to either the starter, the relay, or a big junction stud and interconnect as shown.