[Yaw]

Mate, sorry to hear about it, I really and truly am.
With or without an alarm, if scum bag thieves want it, they'll get it.
This is one of the reasons I can not understand why anyone wants an after market stereo though. Ok maybe older cars do not have a cd player. There are cheap versions under $100 with 4 channels that no one would want to steal and hey if they stop working after a few months they are a disposable item and will not make your car attractive to thieves.