[mechanickeith]

I have an old Radio shack car alarm I put on my car many years ago. If someone opens the doors, hood or trunk, the voltage drop sets off the alarm. I have the under hood alarm speaker disabled. When the alarm goes off, my key fob starts squeeling like a fire alarm. Also if the car is moved or someone leans on it or bumps it, the alarm goes off. I park on the street in front of the house. More than once I have held someone at gun point till the cops arrived!!!