[mustangman65_79]

I don't know if u want to do this, but I have a electric fuel pump hooked up to me car through a switch. If someone started the car, it would run for about 10-20 feet, then die. A crook would then just leave the car, hopfully not still moving, lol.

Another way is a batt switch that when u leave the car, u open the hood, and open the switch. U also have a little wire, fused, just big enough to keep power to your alarm and radio, but not big enough to start the car. Make sure u have hood locks too.