1993 Buick Century Owner's Manual - Page 100

Courtesy Lights Inside Rearview Mirror with Reading Lights (Option) When any door is opened, several lights go on. These lights are under the instrument panel. Optional lights are on the rear doors. They make it easy for you to enter and leave the vehicle.You also can turn these lights onby ''HI:' rotating the interior lights switch to Mirrors Inside Mirror - To reduce glare f o lights behind you,pull the lever rm toward you to the nightposition. To turn- on the reading lights, press the switches on the _ front of the mirror. To reduce glare from lights behind you, pull the lever toward you to the night position. 98