Originally Posted by VPUPPY

most vipers have passive and active arming. passive arming arms the alarm after 30 seconds. you can also have it lock(sux if your keys are in the car) or not lock the doors when it passive arms. there is also another option that may be called forced arming(i can't remember the exact name, know it when i see it) which will passive arm even if your door or trunk or hood(if you had it installed) are left open. if you have the original installation manual for your alarm(most shops give it to their customers), it is outlined in there. if you, post up your alarm model number and will check the ones i have. or you can contact dei for instructions. hope this helps