Lights-On Reminder

When the ignition key is turned to the "O" position and removed, with the lights on, voltage is applied to the reminder circuit on the integrated control unit. When you open the drivers door, the warning circuit senses ground through the closed door switch.

With voltage at the B7 terminal, ground at the A7 terminal and no voltage at the B9 terminal, the chime is activated to remind the driver to turn off the lights.