Aiming The Headlamps; Replacing Tail Lamp/Backup Bulbs - Mercury Grand Marquis 1998 Owner's Manual

Maintenance and care
3. Disconnect the electrical
connector from the bulb socket.
4. Rotate the bulb socket
counterclockwise about ¼ turn and
remove.
5. Without turning, carefully pull out
the bulb.
6. Insert the new bulb into the parking lamp assembly. When the grooves
in the plastic base are aligned, push the bulb into the lamp assembly
until the plastic base contacts the rear of the lamp assembly.
7. To complete installation of the parking lamp/turn signal assembly,
follow the removal procedures in reverse order.

Replacing tail lamp/backup bulbs

For bulb replacement, see a dealer or qualified technician.
Replacing sidemarker and cornering lamp bulbs
For bulb replacement, see a dealer or qualified technician.
High-mount brakelamp
For bulb replacement, see a dealer or qualified technician.
Replacing license plate lamp bulbs
For bulb replacement, see a dealer or qualified technician.

AIMING THE HEADLAMPS

The alignment of your headlamps should be checked by a qualified
service technician if:
1. Oncoming motorists frequently signal you to deactivate your high
beams, and your high beams are not activated.
2. The headlamps do not seem to provide enough light for clear night
vision.
3. The headlamp beams are pointed substantially away from a slightly
down and to the right position.
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