Reading Lamps

When any reading lamp switch is turned to the ON position, the Rear Integration Module (RIM) Inadvertent Power Input is grounded via CKT 149 (DK BLU/WHT) through the reading lamp bulb, the wiring between the lamp and the switch, the reading lamp switch, and CKT 850 (BLK). CKT 522 (LT GRN) is between the LH reading lamp and switch. CKT 523 (DK GRN) is between the RH reading lamp and switch. CKT 9175 (FW), CKT 660 (FW), and CKT 661 (FW) are the circuits between the reading lamps and switches in the overhead console. In response to this input, the RIM energizes the INT LP relay to supply battery positive voltage (B+) via CKT 149 (DK BLU/WHT). Only lamps that have active switches will light because they will be the only ones that are grounded.