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How To Aim Headlamps and Auxiliary Lamps - page 6 / 7

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Daniel Stern Lighting Consultancy and Supply

After adjusting a high/low beam headlamp in the low beam mode, do not attempt to readjust it in high beam mode. All high/low beam headlamps are meant to be adjusted on the low beam setting only-- the high beam adjustment is correct when the low beam adjustment is correct. If you are experiencing a problem where setting the low beams correctly places the high beams too high, but setting the high beams correctly places the low beams too low, you are dealing with a poorly-designed headlamp.

DRIVING LAMPS & HIGH-BEAM-ONLY LAMPS IN 4-LAMP SYSTEMS

These instructions apply to ECE high beam headlamps, US DOT high beam headlamps marked "VO", and all driving lamps. These must be adjusted so that the bright, center "hot spot" of the beam is straight ahead of the lamp in both the vertical and horizontal planes. Use the intersection of the horizontal and vertical lines at point +C for each headlamp as "cross-hair sights" to center the high beam hot spot, like this:

http://www.danielsternlighting.com/tech/aim/aim.html

12/04/2006 01:48 PM

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