1998 Buick Century Owner's Manual - Page 116

Exterior Lamps The lamp controls are located the instrument panel. on They control these systems: Headlamps Taillamps Parking Lamps License Lamps Sidemarker Lamps Instrument Panel Lights Courtesy Lamps If you pull the knob out halfway, it will turn on your parking lamps and your other operating lamps. If you pull the knob all the way out, your headlamps will then come on. Push the knob in all the way to turn off the lamps. A warning chime will sound if you open the driver's door when you turn the ignition switch to OFF, LOCK or ACCESSORY with the lamps on. 2-40