Voltage is supplied to the fog light relay coil through CKT 74 (LT BLU) when the park lamps are turned ON. Voltage is supplied to the load side of the relay at all times through the FOG LP fuse. When the fog lamp switch is turned ON, a signal is provided to the body control module (BCM) by grounding CKT 192 (ORN) to G203 through CKT 1050 (BLK). When the BCM receives the signal the fog lamp relay coil is grounded through CKT 1317 (DK GRN/WHT). When the fog lamp relay is energized, current is routed to connector C4 of the underhood fuse block terminal E2 and terminal B4. Terminal E2 provides power to the fog lamps through CKT 34 (PPL). Terminal B4 provides power to the fog lamp indicator through CKT 34 (PPL). The LH fog lamp is grounded by CKT 150 (BLK) to G111. The RH fog lamp is grounded by CKT 250 (BLK) to G112. The fog lamp indicator is grounded by CKT 1050 (BLK) to G203. The BCM de-energize the fog lamp relay when the high beam headlamps are ON.