Buick 1993 Skylark Owner's Manual page 100

Lights
The headlight switch is located on the control left of the
steering column. To turn on your lights, turn the band
marked LIGHTS.
It controls these light systems:
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Headlights
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Taillights
Parking Lights
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License Lights
Sidemarker Lights
The interior courtesy lights can be turned on by rotating
the control located on the instrument panel to MAX.
The instrument panel brightness can be adjusted
between MIN and MAX by rotating the control also.
Battery Run-down Protection
This feature is made up of two functions. They are
inadvertent power control and parasitic power control. If
vehicle battery is disconnected for any reason the system
timers will change to 3 minutes and 3 days respectively
until the vehicle is driven 15 miles.
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