tether kill wiring

I need to put a tether kill switch on my bike to make it legal at the dragstrip. heres the deal, picked up a kill, tested it found it is normally OPEN. is there a way I can wire this thing in or do I have to find a normally closed switch to make my life easier.

hmmm that or maybe make it ground out your points or ignitor signal when it's closed. Just an idea

did some digging for info on the kill switch...normally open is for magneto ignition and normally closed is for battery ignition...good to know!!!!!