2003 Pontiac Bonneville Owner's Manual - Page 313
2003 Pontiac Bonneville Manual
Page 313 highlights
Headlamp Horizontal Aiming Turn the horizontal aiming screw (A) until the indicator (B) is lined up with zero. 1. Find the aim dot on the lens of the low beam lamps. B A 2. Measure the distance from the ground to the aim Once the horizontal aim is adjusted, then adjust the vertical aim. dot on each lamp; if left low beam, subtract two inches. Record this distance. 3. At the wall or other flat surface, measure from the ground upward the recorded distance from Step 2 and draw or tape a horizontal line the width of the vehicle. Headlamp Vertical Aiming Notice: Horizontal aiming must be performed before making any adjustments to the vertical aim. Adjusting the vertical aim first will result in an incorrect headlamp aim. 5-54
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 |
Headlamp Horizontal Aiming
Turn the horizontal aiming screw (A) until the
indicator
(B)
is lined up with zero.
B
A
Once the horizontal aim is adjusted, then adjust the
vertical aim.
Headlamp Vertical
Aiming
Notice:
Horizontal aiming must be
performed
before making
any
adjustments
to the vertical
aim.
Adjusting
the
vertical
aim
first
will
result
in
an
incorrect headlamp
aim.
1.
Find the
aim dot on the
lens
of
the
low
beam lamps.
2.
Measure the distance from
the
ground to the
aim
dot on
each
lamp;
if
left low
beam,
subtract
two
inches. Record
this
distance.
3.
At the wall or
other flat surface,
measure
from
the
ground
upward
the recorded distance
from
Step
2
and
draw
or tape a horizontal line the
width of
the vehicle.
5-54