Cadillac 1993 Fleetwood Owners Literature page 125

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Please don't cover the
light sensor.
If you cover the sensor, it will sense that is is dark outside and your lights
will come on.
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Cornering Lights
If your exterior lights are on, the cornering lights will come on when you
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signal a turn. This will provide more light for cornering when its dark.
Underhood Light
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Your vehicle has a Delay Interior Lighting System (DIL). This system
controls power to the underhood light. Just pull up on the door handle
with the hood raised and the lamp will light for about 10 minutes. Every
minutes. The light will go off when you close the hood.
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time the door handle is pulled up the light will stay on another 10
Daytime Running Lights (Canada Only)
The Canadian Federal Government has decided that "Daytime Running
Lights" (DRL) are a useful feature, in that DRL can make your vehicle
more visible to pedestrians and other drivers during daylight hours. DRL
are required on new vehicles sold in Canada.
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Your DRL work with a light sensor on top of the instrument panel. Don't
cover it up.
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