Depends on how you want it to work. Just the basic pass tech or a safer manner?

This is the method I prefer. Keeps that fat wire line to the starter cold except when starting the car. Put the ford solenoid in the trunk right next to the battery



On your 4 pole switch wire the alt like the one healtservices posted above, not like the one in my example.

Make darn sure the cut off switch can handle the anticipated amp load.

I HATE, yes HATE, to see cars that have that hot line from the alt to battery live all the time. If you've never seen a car burn to the ground because of it, it's a real joy.

If you do put the relay in the alt line like I have, the way this one is wired is for a race car that the switch is turned off after every run. The relay will be a continuous draw when the master cut off is left on. If a street car, connect the trigger terminal to a switched key source instead of the downstream side of the master cutoff.