1998 LINCOLN MARK VIII headlamp

4. Remove the retaining screw from
the corner of the headlamp
assembly.
5. Remove the bolts from the top of
the headlamp assembly.
6. Gently pull the headlamp
assembly forward. Noting the
location of each connector,
disconnect the wire connectors from
the headlamp assembly.
7. Remove the headlamp assembly
and place it on a clean work surface.
8. Remove the low beam headlamp
housing cover by rotating
counterclockwise 1/4 turn.
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147

9. Remove the headlamp bulb
retaining nuts.
10. Remove the headlamp bulb
assembly.
11. Slide the headlamp level and
bracket off the bulb assembly and
remove.
12. Twist headlamp housing
counterclockwise to remove
headlamp bulb from socket.
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148

To install the new low beam headlamp bulb:
1. Insert the new bulb into the
socket and twist clockwise to lock
into place.
2. Pull the headlamp level and
bracket over the bulb assembly and
snap into place.
3. Insert the bulb assembly into the
socket opening.
4. Install the retaining nuts. Tighten
them 1/4 turn past finger tight.
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149

5. Position the low beam headlamp
housing cover over the bulb
assembly and rotate clockwise to
lock into place.
6. Match the remaining wire
connectors with their proper mates
and reinstall.
7. Reinstall the top bolts. Tighten
1/2 turn past finger tight.
8. Reinstall the retaining screw at
the corner of the headlamp
assembly.
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150

9. Replace the sight shield.
10. Reconnect the battery ground
cable and close the hood.
Replacing the high beam headlamp bulb
To remove the high beam headlamp bulb:
1. Make sure the headlamp switch is
in the OFF position.
2. Lift the hood and remove the
sight shield located above the
headlamps.
3. Remove the high beam headlamp
housing cover by rotating it 1/4 turn
counterclockwise.
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151

4. Rotate the plastic bulb base
counterclockwise and pull the bulb
assembly out of the housing.
5. Pull the bulb socket retaining clip
outward while carefully pulling up
on the plastic base of the bulb.
To install the new high beam headlamp bulb:
1. Hold the bulb by its plastic base
and insert it into the socket.
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152

2. Push the bulb down into the
socket until the retaining clip snaps
over it.
3. Carefully insert the bulb assembly
into the headlamp housing while
aligning the locking tabs.
4. Rotate the bulb assembly
clockwise to lock it into place.
5. Position the headlamp cover over
the bulb assembly. Align the tabs
and rotate clockwise to lock into
place.
6. Replace the sight shield and close
the hood.
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153

Using the right bulbs
Function Trade Number
Headlamp low beam 9500
Headlamp high beam 9005
Park and turn lamp (front) 3157 NAK
Side marker lamp (front) 168
Cornering lamp (front) 3156
Tail lamp, brakelamp, turn lamp 3057K
Side marker (rear) 168
Backup lamp 3156
License plate lamp 168
High-mount brakelamp 3157K
Luggage compartment lamp 912
Dome/map lamp (with moon roof) 906
Dome lamp 906
Map lamp 168
Sun visor lighted mirror Part # ES9Z-13466-B
Front door courtesy lamp/dual floorwell lamp 168
Rear reading/courtesy 912
Glove compartment 194
Ashtray 194
To replace all instrument panel lights - see your dealer.
AIMING THE HEADLAMPS
Your vehicle is equipped with a Vehicle Headlamp Aim Device (VHAD)
on each headlamp body. Each headlamp may be properly aimed in the
horizontal direction (left/right) and the vertical position (up/down).
A non-zero bubble reading does not necessarily indicate out-of-aim
headlamps. If your vehicle is not positioned on a level surface, the slope
will be included in the level indicator. Therefore, vertical headlamp
adjustment should be performed only when beam direction appears to be
incorrect or a level surface can not be verified.
The horizontal aim must be adjusted first. You will need one 4 mm box
wrench or open end wrench.
Maintenance and care
154