If you desire an aftermarket alarm system here is some advice, If you buy one pay up and get a good one, and also have someone reputable install it( not your buddy who knows a little about stereo stuff). I just spent around 5 hours cutting all the crappy alarm wiring out of under my dash installing a $180.00 turn signal switch(that didn't fix the problem) and then had to run down power wires to reconnect my turn signals into working again, just because some bonehead did a crappy job on wiring up an aftermarket alarm(even though my car has a factory alarm that still works and goes off every time the car is opened). Which I want to disarm but still am unsure of how to. So this is just a little tip if you are interested in an alarm system. If you go cheap it may cost you more in the long run.