Fuel Cut off Switch, here ya go

you can do it anyway you want. when u wanna start your car you have to flip it on and leave it on while your driving otherwise it's gonna stop giving it gas lol. You can put it anywhere, under your seat, in the glove box, in the arm rest, you can do it anyway u want. it's not really for people that are to cheap to do it with the alarm, it's for people that one a sure way of protecting there car

here is a diagram if u guys can't figure out how to get out the back seat. there are 2 clips and at the top right it shows what the clips look like