Buick RIVIERA 1993 Manual page 99

Twilight Sentinel
Twilight Sentinel turns your
headlights
on and off by
sensing how dark it is
outside.
To operate it, leave the light switch off and move the
Twilight Sentinel control to any position but OFF.
If you move the control. all the way to MAX, your lights
will remain on for three minutes after you turn off your
engine. If you move the control almost all the way in the
other direction, the lights will go off quickly when you
turn off your engine. You can change this delay time
from only a few seconds to three minutes.
Your Twilight Sentinel and Daytime Running Lights
(Canada Only) work with the light sensor on top of your
instrument panel. Don't cover it up, if you do it will read
"dark" and your lights will come on.
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