Fog/Driving Lamp: Description and Operation

Power is supplied at all times to front fog lamp relay terminal G through
^ 15 A fuse [No. (84) located in the fuse block (in relay box)].
Power is also supplied at all times
^ through 15 A fuse [No. (38) located in the fuse block (in relay box)]
^ to headlamp relay-L terminals (1) and (3),
^ through 15 A fuse [No. (37) located in the fuse block (in relay box)]
^ to headlamp relay-R terminals (1) and (3), and
^ through 1O A fuse [No. (3), located in the fuse block (J/B)]
^ to lighting switch terminal (5).
When the lighting switch is moved to the 2ND position, ground is supplied to each headlamp relay through lighting switch and body grounds (M3) and (M90).
Then each headlamp relay is energized and power is supplied
^ from headlamp relay-R terminal (5)
^ to front fog lamp relay terminal (1), and (Canada models)
^ from headlamp relay-L terminal (5)
^ to dimmer relay terminal (2). (U.S.A. models)
^ from lighting switch terminal (6),
^ to dimmer relay terminal (2).

Front fog lamp operation
The lighting switch must be in the 2ND and LOW ("B") position for front fog lamp operation. With the front fog lamp switch in the ON position, ground is supplied.
^ to front fog lamp relay terminal (2)
^ through front fog lamp switch terminal (17)
^ to front fog lamp switch terminal (18)
^ through dimmer relay terminal (5)
^ to dimmer switch terminal (44)
^ through dimmer switch terminal (43)
^ from body grounds (M3) and (M90).
The front fog lamp relay is energized and power is supplied
^ from front fog lamp relay terminal (3)
^ to terminal (1) of each front fog lamp.
Ground is supplied to terminal (2) of each front fog lamp through body grounds (E13) and (E22). With power and ground supplied, the front fog lamps illuminate.