How To Aim Projector Headlights - Club RSX Message Board

How to Aim Projector Headlights | eHow.com

I couldn't find the website, but I use an empirical method.

(Low beams only) while parked on a flat street with a number of cars parked along the side (parallel parked) I adjusted the left beam height to just lower than the level of the side/rear view mirrors. Then the right side to the 2.1 to 2.5 degree higher for ditch observation.

Seems to work for me and for those I don't blind while overtaking/following.