I'm assuming u mean so the beams point straight at nite?
Should be two screws at the back of the headlight case, near to where you put the bulb in, turning one screw moves the bulb up and down and the other moves it left and right. Just park ur car a little away (5m or so) from a wall and line them up from there.
I got a mate who didn't line his up, everytime he drives down a dark street we can't see s**t coz his lights are pointing at the side of the road haha
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