see alarms dont really work if no1 goes to chech, a good thief could disable a alarm in a few minutes, if your worried about them actually taking the car itself u can make a fuel cut off switch for the fuse to the fuel pump so it would run for like 5 secs and die, another good tip if u have a sound system dont play it loud at shool, around where u live, or park for work. godd luck to u and sry about it, see if it were me makin the laws i would have thieves hands cut off cuz i hate them with a passion.