Get the jeep right up tight to a wall, perpendicilar to the wall. Make sure you have a very large and LEVEL area to work in, like a grocery store parking lot. Large flat area. Measure the centerline height and put a piece of tape on the wall at that height. Then measure and mark the centerline width of each light. Use a very long strip of tape, adequate for movement. Back the jeep STRAIGHT back until your headlights are 25' away on LOW BEAM. Now, use a t15 torx screwdriver to raise or lower with ine screw, left or right with the other.
Your tape should show a + + on the wall. You want your low beam to point in the lower right corner of each plus.
This is for a TJ, and presumably a YJ. You can google this to get a nice pdf of it as well. But it's pretty basic, and very easy.
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