As a professional electronics installer and a viper/clifford authorized dealer, I would not recommend doing it yourself. If you have never installed a remote start, then you won't know what to do. They don't exactly come with an instruction manual for your specific vehicle. As far as PATS is concerned, if you don't get the right interface, you could have problems starting the car down the road. Besides, a viper not installed by an authorized dealer has ZERO warranty! Dealers are not even supposed to sell over the counter or they will have their dealer agreement cancelled. Find a reputable specialty dealer in your area and do your homework. Viper has a lifetime warranty on there product and they stand behind it. The dealer you chose, on the other hand, may not.