battery cut off switch

bluefish said

ok, i like the second diagram. there's no extra relays needed, but the + wire from the alternator in hooked the battery + and has power weather the switch is open or closed. i don't understand how the power could be cut if the alt. wire always has power. would'nt the engine continue to run with the switch open?

Click to expand...

No, because the alternator is hooked in up stream from the cut off switch. It's not hooked to the starter relay lug in the engine compartment.

I actually like the extra relays in the trunk because it cuts ALL hot wire to the front. Using the ford starter and a continuous duty relay for the alternator, once the cutoff switch is thrown there are no hots beyond the cutoff and relays.