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itsa300zx »
https://forums.nicoclub.com/itsa300zx-u135155.html
Tue Feb 05, 2019 7:12 pm
Paragraph just above the adjustment picture: H = height of lamps on car.
“Really Old School Aiming Headlights on the Wall Approach
Under the headlights on the wall approach you need to make a grid on the wall using tape. Up to Five vertical pieces of tape can be used to mark the center of each headlight as well as where the center of the car would be if it were pressed up against the wall.
The next step in the wall alignment processes to place a Horizontal tape line on the wall as well. To position this line, a measurement is taken from the ground in front of the car to the midpoint of the light being inspected. Since the 300zx low and high beams are side by side the measurement would be the same for each of them. This measurement is used to position the horizontal tape on the wall at this same height while intersecting the vertical pieces of tape. The standard procedure is then to back up the car 25’ (over flat ground) and then see where the turned on lights illuminate the tape. The light of one light would be blocked off while adjusting the other. (Do not drape anything over the headlight though, it can overheat and melt or warp the plastic housing). A large piece of cardboard or other object a foot or so away should do.”
WL= 42” +/- 4”