Voltage is applied to terminal 1 of the multifunction relay K134 at all times through the RH high beam headlamp relay K132. When the ignition switch is in the ON position, B+ is applied to terminal 10 of the multifunction relay K134. When the park lamps are ON, B+ is applied to terminal 3 of the multifunction relay K134. Terminal 13 of the fog lamp switch is permanently grounded to G103.

When the fog lamp switch is turned to the ON position, ground is supplied to terminal 8 of the multifunction relay K134. When terminal 8 is grounded, the coil is energized and the multifunction relay K134 outputs B+ at terminal 4. When the multifunction relay K134 outputs B+ at terminal 4, the fog lamps and the fog lamp indicator turn ON. Both of the fog lamps are permanently grounded to G103.