Driveway Sensor Alarm

Well then we live in a nice neighborhood in Michigan, but are surrounded by areas terrible. Last month, my beautiful brothers cobra was burgled and they stole the radio and most of the dashboard trying to escape. Nobody has heard anything because the idiot is not an alarm on his car and the only lights we have on our drive way are the two very small attached garage.

Well, at that time I did not care because I had a saturn .. and I went and bought myself a BMW with a $ 800 raise the bridge, target.

Now the car has an alarm upgrade dealer, if you were to open the doors with the alarm raised the alarm was going .. only problem is that it's not as hard as I want it to be. Short of paying $ 300 for a new "stronger" warning what can I doa

I thought to put a motion activated a few spots on the garage and maybe even a motion detector with an alarm in my room (I am the farthest from the garage) or something like that to peoplea

I do not own a gun and would be more than willing to pull a @% holes who steal us (non-lethal, of course = P) and I thought perhaps a sign saying this to scare them. Any ideasa

Do not deprive yourself, even if the goal is to make it as effective as a new car alarm, but less than $ 200. Thank you in advance.

You can buy a motion sensitive lighting. Instead of putting lights in the thing, you can put 120 vac powered alarm horn. Connect it to a light switch so you can turn it on at night or when you want the alarm to function. Everyone wakes up in the neighborhood! You can also buy a camera (casual hunters use them during hunting season) that takes a picture of someone coming into the field of view of the camera. Cabela's sells them for about $ 250. It takes a picture of vermin without a flash - so they will not be warned of its presence.