1999 Cadillac Catera Owner's Manual - Page 109

yellowblue Map Lamps Mirrors Electrochromic Day/Night Rearview Mirror These lamps are located in the front overhead console (near the windshield). Press either button to turn the driver's or passenger's side lamp on and press the button again to turn the lamp off. These lamps also come on when any door is opened or unlocked when it is dark outside. This mirror automatically changes to reduce glare from headlamps behind you. A photocell on the back of the mirror senses when it is becoming dark outside. Another photocell built into the mirror surface senses when headlamps are behind you. 2-47