so my 05 gp has auto start but the range on it is like 10 feet, & ive had a viper alarm before so im thinking im just guna get another one, just wanted to know, if i buy it off ama sone for $200 and then pay $100 for install, do i need to buy anything else for install? like is there anything else that the car needs for the hook ups, let me know! thanks guys!