What would be the best way to wire in KILL switches? Im running MSD dist. and blaster coils. Ground the neg. side of coil or run the ignition hot wire thru the switch or maybe theres another way? Seems like it also would be safer to wire both switches to kill both motors but not sure that can be done and still keep each ignition system independent. Thanks

I wired my kill switch to a relay,that relay runs my fuel pump and 12v key power to my msd box.works great,i have heard it is not good to ground out an msd coil.

I have wired the kill switch to ignition system. The kill switch is wired between key switch and purple wire in he main wire harness.

I did mine the same way, just ran it in line in the purple ignition power wire...Rob