1999 Cadillac DeVille Owner's Manual - Page 107

yellowblue Courtesy Lamps (DeVille Only) The courtesy lamps are located in the roof in the rear seat. These lamps come on with the control lamp knob or when any door is opened and it is dark outside. Parade Dimming This feature prohibits dimming of the digital displays during daylight while the headlamps are on. This feature operates with the light sensor for the Twilight Sentinel and is fully automatic. When the light sensor reads darkness outside, the digital displays can be adjusted by turning the lamp control knob counterclockwise to dim and clockwise to brighten lighting. Backlighting to the instrument panel will turn on regardless of light conditions. Illuminated Entry The illuminated entry system turns on the courtesy lamps and the backlighting to the door switches and to the lamp control knob when a door is opened or if you press a remote keyless entry transmitter button. Since the illuminated entry system has a photocell, this means that it must be dark outside in order for the courtesy lamps or backlighting to turn on. The courtesy lamps turn off approximately 20 seconds after the last door is closed or after the ignition key is placed in the ignition. Reading Lamps (DeVille d'Elegance and DeVille Concours Only) The reading lamps are located in the roof. These lamps come on automatically when any door is opened and it is dark outside. For manual operation, press the button to turn them on. Press it again to turn them off. If the reading lamps are left on, they automatically shut off 10 minutes after the ignition has been turned off. 2-47