Ignition Kill Switch

i duno
it looks pretty simple to hook up

REAL simple man. there are alot of trick things u can do to make it not start. PM me ill help,

you can always wire a kill switch to the starter solenoid, or the FP relay, whatever makes you happy and is much easier and can be hidden anywhere and not easily bypassed, on that keypad I imagine all you have to do is complete the circuit(cutting 2 wires and putting them together) Keep it simple is what i'm saying.