Courtesy Lamp Bulb: Description and Operation

ROOF RAIL READING LAMPS

These lamps have switches that allow the operator to activate them. The switches, upon activation, provide ground to these lamps turning them to the ON position. The switches obtain ground through G302. The BCM does not turn on these lamps with the rest of the interior courtesy lights. Power to the roof rail reading lamps is provided by the BCM through the courtesy lamps supply voltage circuit, so that they are protected by the inadvertent load protection in case they are left in the ON position.