If you look behind your lights, there should be 2 white plastic screws sticking out. I forget which is which, but one adjusts the vertical and the other the horizontal. I think you'll need a 4mm socket to adjust it. Pull you truck in front of a wall about 25 feet away and your headlight beam on the wall should be aimed the same height as your headlights, amybe jsut a tad lower. This is all assuming your rig is not lifted. Hope it helps.