Battery cut off switch

Oldmanmopar said

After going out and looking at my car you are right. I have a 4 post wired in. I am killing the ignition box and the fuel pump with the smaller post.

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That's the way I just wired mine. 4 post switch. I ran a 8 gauge wire from the small post to my msd box. Flip the switch and it kills the power from the battery, and the power to the ignition. When off, there is no power in the car. No relays needed.