Buick 2003 Century Owner's Manual page 267

Driver's Side Headlamp Shown
A. Vertical Aim Adjustment Screw
B. Horizontal Aim Adjustment Screw
Open the hood and locate the vertical and horizontal
aim indicators. The aiming screw for the vertical
aim indicator (A) is at the center of the headlamp cover
and the aiming screw for the horizontal aim indicator
is on the outboard side of the headlamp cover (B).
Passenger's Side Headlamp Shown
A. Horizontal Aim Adjustment Screw
B. Horizontal Block Index Plate
C. Vertical Aiming Level
Start with the horizontal aim. The adjustment screws
can be turned with an E8 Tom@ socket.
Once the horizontal aim is adjusted, then adjust the
vertical aim.
1. Turn the horizontal aiming screw until the indicator
2. Turn the vertical aiming screw until the level bubble
is lined up with zero.
is lined up with zero.
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