Just some imagination would do a great kill switch, i got a friend with a 4runner and he has a good one, if hes drunk or looses knowledge hes walking home
first open the key, then turn a button on the A/C, then turn the high beams, then a hidden switch then go start the car, lots of things to do but it works in my point of seeing it.
Same with our rides we can put serial switches or use accesories wich are not usefull anymore, for example i got no A/C so i can maybe use the lever to activate something or the stock light switch..
What can you kill..
Starter
Battery
Dizzy
Fuel
Can you do the alt??? if so how, im guessing cutting the battery source
fix the ignition so you cannot turn the engine without the door being locked, i want to do this one but not in the mood to do a lot of wiring or taking my doors apart.
Maybe even the parking brake light, of the 4hi-4lo light on the dash.
Whats that smell coming from the neighboors roomm..........