Roof Rail Courtesy/Reading Lamps

The operation of these lamps is described as part of the courtesy lamps operation. The BCM provides power (CKT 1732) and ground (CKT 157) to these lamps controlling their operation.

In addition, these lamps have switches that allow the operator to turn them ON when the courtesy lamps are OFF. The switches provide ground to these lamps turning them ON. The switches obtain ground through CKT 850. Power to these lamps is provided by the BCM through CKT 1732 in order to be protected by the inadvertent load (battery rundown) protection in case they are left in the ON position.