After installing my KW V2's I needed to realign my lights, and although I found information on how to do this on the e90's and e92's, there were no pics of the e82 lights and where to adjust them.
Location of the adjustment screw:
Using a 6mm allen hex (the one in the tool kit works perfectly) turn the screw counterclockwise to raise the lights, and turn it clockwise to lower them. I recommend parking the car 20 or so feet from a wall and adjusting them that way, any closer and it's hard to tell how high the lights are actually hitting.
I had to turn mine about 5 turns each, but unless you are as low as I am I doubt that's necessary for most people.