1995 Cadillac Seville Owner's Manual - Page 126

I Light Sensor The light sensor forthe twilight sentinel is located in the centerof the frontdefogger grille. If you coverthe sensor, it will read "dark" and your lamps will come on. Fog Lamps (STS) Use your fog lamps for better vision in foggyor misty conditions. When you press the upperfog lamp switch, a small indicator light will glow to tell you the fog lamps are on. To turn them off press the switch again. If you switch o n your high beam headlamps, your fog lamps will turn off. They'll turn back on again when y o u switch to low bcam hcadlamps. When the twilight sentincl is on and the fog lamp witch is activrtted, only thc htxdlamps will turn o f f automatically. Your fog m c i parking l:tmps will remain on.