Honda 2004 Odyssey Service Manual page 1810

5. Turn the low beams on.
6. Determine if the headlights are aimed properly.
Vertical adjustment:
Measure the height of the headlights (A). The lights
should reflect 52 mm (2.1 in.) below headlight
height (B).
Horizontal adjustment ('99-00 models):
The width of the refracting points (C) should be the
same as the width of the headlight central points (D,
E).
D
B
A
E
C
7. If necessary, adjust the headlights to local
requirements by turning the horizontal adjuster (A)
('99-00 models) and the vertical adjuster (B).
B
8. After headlight replacement;
On '99-00 models, push and install the horizontal
indicator gear (A) to the horizontal adjuster (B) so
that the arrow on the indicator gear (C) is pointing
up.
B
A
A ('99-00 models)
C
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