1997 Buick Riviera Owner's Manual - Page 107

If you move the control the wayto AUTO MAX, all your lamps will remain on three minutes afteryou for turn off your engine.I you move the control toward f AUTO MIN, the lamps will gooff quickly when you turn off your e n w e . You can set this delay time for only a few seconds up to three minutes. or Light Sensor Your twilight sentinel and daytime running lamps work of with the light sensor on top the instrument panel. Don't coverit up. If you do,it will read"dark" and the headlamps will come on. Instrument 'anel Brightness By rotating the headlamp knob you can make the instrument panel lights bright or dim. See "Headlamps" in the Index. 2-46