For USA

Power is supplied at all times
^ through 15 A fuse (No. (53), located in the fuse and fusible link box)
^ to headlamp relay LH terminals (1) and (3),
^ through 15 A fuse (No. (54), located in the fuse and fusible link box)
^ to headlamp relay RH terminals (1) and (3),
^ through 15 A fuse (No. (66), located in the fuse and fusible link box)
^ to tail lamp relay terminals (1) and (3)
When the ignition switch is in the ON or START position, power is supplied
^ through 7.5 A fuse (No. (12), located in the fuse block (J/B)]
^ to auto light control unit terminal (2).
Ground is supplied
^ to auto light control unit terminal (5)
^ through body grounds (M73), (M103) and (M13, and
^ to the lighting switch terminals (8) and (5)
^ through body grounds (E5) and (E30).

AUTO LIGHT OPERATION
The auto light control unit has an optical sensor inside it that detects outside brightness. When lighting switch is in "AUTO" position, ground is supplied
^ to auto light control unit terminal (10)
^ from lighting switch terminal (42).
When ignition switch is turn to "ON" or "START" position and
^ Outside brightness is darker than prescribed level or
^ After 20 seconds delay, outside brightness becomes darker than prescribed level
Ground is supplied
^ to headlamp relay LH and RH terminals (2)
^ from auto light control unit terminal (6) and
^ to tail lamp relay terminal (2)
^ from auto light control unit terminal (7)
Then both headlamp relays and tail lamp relay are energized, headlamps (low or high) and tail lamps are illuminate according to switch position.
Auto light operation allows headlamps and tail lamps to go off when
^ Ignition switch is turned to "OFF" position or
^ Outside brightness is brighter than prescribed level or
^ After 20 seconds delay, outside brightness becomes brighter than the prescribed level. For parking license and tail lamp auto operation, refer to "PARKING, LICENSE AND TAIL LAMPS".

THEFT WARNING SYSTEM

The theft warning system will flash the high beams it the system is triggered. Refer to "THEFT WARNING SYSTEM - IVMS".