Glad you got it back.We spend our hard earned money on our cars ,and id hate to think of some one taking my car.I have layers of anti theft systems on my car including removable steering wheel.I do realize im screwed when it comes to a tow truck,the average thief is a crack head . This just one cheap an effective alternative besides an alarm that you can buy for less than $25 dollars at radio Shack.It takes about an hour to wire it .better Buy the parts and have an auto tech/stereo installer do it for you.
Auto Immobilizer Wiring Diagram
trick is you have to hide wiring best you can.