Buick 1999 Regal Owner's Manual page 277

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5. Remove the rubber access cover (from behind the
bulb you are replacing).
6. Quarter twist and turn the bulb socket and remove it
from the lamp.
7. Lift the plastic locking tab on the electrical
connector and pull the connector from the headlamp
bulb socket.
8. Connect the new headlamp bulb to the wiring harness,
making sure the connector tab snaps into place.
9. Insert the bulb socket into the headlamp assembly.
10. Reverse all steps and reassemble the headlamp
assembly, then check the lamps.
Headlamp Aiming
Your vehicle has a headlamp system equipped with
horizontal and vertical aim indicators. The aim has been
-
pre
set at the factory and should need no further
adjustment. This is true even though your vertical and
horizontal aim indicators may not fall exactly on the "0"
(zero) marks on their scales.
If your vehicle is damaged in an accident, the headlamp
aim may be affected. Aim adjustment may be necessary
if it is difficult to see lane markers (for horizontal aim),
or if oncoming drivers flash their high beams at you (for
vertical aim). If you believe your headlamps need to be
-
re
aimed, we recommend that you take it to your dealer
for service; however, it is possible for you to re
your headlamps as described in the following procedure.
NOTICE:
To make sure your headlamps are aimed
properly, read all the instructions before
beginning. Failure to follow these instructions
could cause damage to headlamp parts.
yellowblue
-
aim
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