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Message: <blockquote data-quote="MustangMatt96GT" data-source="post: 467692" data-attributes="member: 9581">remove the battery.remove all the cables that went from the positive terminal to the fuse block.There is a factory wire that goes from the start to the fuse block...KEEP THAT ONE. I believe its two wires going into the same "terminal." Just cut the battery out all together.go to the alternator....take the THICK gauge wire off...completely...it would have gone to the battery/underhood fuse box....remove the whole thing. you're rewirining pretty much everything here.Your NEW wiring setup should go...as follows. You have your battery mounted in the trunk...mount your battery kill switch where you want it.now this is EXACTLY HOW your wiring should go to allow the switch to kill the car AND (this is key) disable the alternator.From the POSITIVE OF THE BATTERY it should go to one side of the battery kill switch....THE WIRE FROM THE ALTERNATOR SHOULD GO TO THE SAME POST ON THE KILL SWITCH!!!! Now one side of the kill switch is attached to the battery and alternator. Attach the OTHER side of the kill switch directly to the starter. THEN from the starter, run a wire to the fuse box under the hood. From the battery to the switch and the switch to the starter, the wire should at least be a -0 gauge. The alternator wire and from the starter to the fuse block...a -2 gauge is fine.</blockquote>