Park Lights Off Input

The BCM senses a voltage signal through the park lights oft input (CKT 1872) when the headlamp switch is in the OFF position. This circuit opens when the headlamp switch is in one of the following positions:
^ The PARK position
^ The HEAD position

The headlamp switch receives B+ through CKT 1340. The BCM uses this input for the operation of the headlamps-on reminder.