CHEVROLET 1999 Cavalier - Manual (Page 109)

yellow blue
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Front Reading Lamps (If Equipped)
These lamps are located on the rearview mirror. Turn
each one on and off by pressing its switch.
Map Lamps (If Equipped)
These lamps are located forward of the dome lamp. To
turn the lamps on, press the switch. Press the switch
again to turn them off.
Battery Saver
Your vehicle is equipped with a battery saver feature
designed to protect your vehicle’s battery.
When any interior lamp (trunk, reading, dome, glove
box, etc.) is left on and the ignition is turned off, the
battery rundown protection system will automatically
turn the lamp off after 20 minutes. This will avoid
draining the battery. This system does not protect
against leaving on the headlamps or parking lamps.
To reactivate the interior lamps, either:
D the ignition must be turned on,
D the activated lamp switch must be turned off, then
on, or
D a front door must be opened.
The battery rundown protection feature will also be
activated when any door is left open.