Alarm Neg. input
#2
Ungrounded Moderator
iTrader: (4)
The stock alarm doesn't have the same kind of "ground when armed" circuit that aftermarket alarms have. All of the alarm "brains" are in the BCM which basically goes to sleep about 10 minutes after all the doors are closed. The only circuit that remains active (other than the sensors) is the dash LED which sends a pulsed signal to make the LED flash.