they dim 40%? thats not right? where are getting your power from for your ballasts? the screw should be below both bulbs it is either metal or plastic and a grooved looking almost cutting wheel looking thing underneath it. clockwise aims down, counter-clockwise aims up. if that doesnt work just do the opposite.
Hey man, i just got a Xentec Plug n play hid kit, need to know 2 questions if u can help, 1. when i turn on my lights they are nice and bright but after about 10 seconds they dim about 40% and stay that way, 2. where is the adjusting screw located on the light