Someone installed a viper in mine, real bad hack job. Was a nice alarm, had the vibration detector and everything, but it was already not working when I got the car. I'm not patient with wiring so I had my roommate trace wires and pull it out. Now I don't have hi-beams or cruise control, haven't bothered to track it down yet. Not sure if they are related but I think i lost them right after he pulled it.