if i remember correctly, adjusting headlights was pretty easy, measure the distance from the center of the headlight to the ground, on level ground about 20 feet from a garage door or wall, mark a spot at the same measurment as your headlights, sighting down the left body edge of your truck from the back fender you can pick up a reference spot for the left and right to go with the up and down from the headlight measurment, intersect the two lines, makes a cross, low beam shines in lower right square, high beam in upper left..
