[Myoldtruck]

The old way was to install a second high low beam switch on the floor and tie that into the ignition, or the two purple wires under the colum for the neutral safety switch. That being said this will only stop another honest person or some dumb kid.

The correct way is only to track down your truck once its gone. Mount a water proof box under the truck with a motor cycle battery, gps locater service and a standard car alarm. Gps will get you within 10-40ft of the truck, the car alarm will get you to the truck once the gps stops. You need to wire that battery with a one way charging loop, so it will charge off the cars system and will not back feed into the cars system when they disconnect the cars main battery.

I grew up in Philadelphia. Its take it or break it. You cant own anything real nice and drive it as a normal car.