Pete 387 headlight adjustment

It's a torx bit adjustment located on the side of the lens. Follow the lens around from the front and its on the side of your truck.

 

You bet, glad to help. Unfortunately as you're about to find out, Peterbilts have terrible light output which is probably why someone pointed them upwards. My 2006 was horrible and my 2013 is no better. I had to aim my '13's down as well because I was getting constantly flashed at night. The weak output is obvious when a car or Freightliner passes you at night, when beside you, there lights will completely overpower ours. Dispicable that something like that is an afterthought to the people who design these trucks.