How To adj the headlights on a mack ch600 truck?

Locate the aadjustment screws dead center top and center out recessed near the headlight itself. (at night) pull up to within 50 feet of a door or building on a level surface. turn on headlights, d a cover over the right headlight and with low beams on, adjust left headlight to strike where you would approximate the fogline (right side)approximately 70 ft ahead and slightly left of percieved fogline. Move d to left headlight and adjust right headlight to slightly below and to the right of the previously targeted area (fogline). they will be properly aimed at that point, out of oncoming traffic's eyes, and when switched to bright illuminate properly withoput blinding oncoming.