SOLUTION:
I know this is an ancient thread, but I was trying to figure out how to adjust the headlights on my 2004 EB and the long vertical bolt behind the headlight doesn't do anything for the adjustment, it just secures the headlight assembly to the vehicle. I didn't see any other threads in the forum that gave good instructions on how to adjust the headlights, so I figured I'd answer this question.
I noticed a long, skinny threaded rod that protrudes horizontally out of the back of the headlight assembly and discovered that it is actually the adjustment screw. The screw is on the back of the headlight assembly on the outboard side (near the side of the truck). It's maybe 3/16ths inch in diameter. The end of the screw is six-sided like it's supposed to accept a small wrench, but the smallest wrench I had wouldn't fit it, so I just used pliers. Turning the screw clockwise (as viewed from the front of the vehicle) aims the beam higher.
FOG LIGHTS: I also wanted my fogs to be brighter. I discovered that the 9005 high beam bulbs can be modified to fit the fog light assembly. The 9145 fog lights are only 42 watts and a 9005 high beam is 60 watts. The wiring can handle the extra current with no problem. I drove around for an hour this evening with my fogs on and didn't have any problems.
To modify the 9005 bulbs to fit, you have to use some snips to nibble away at a little of the plastic on one of the three tabs. If you stick the bulb into the socket you'll see what I mean. The edge of one of the tabs is too big. I'll try to post a picture later, but if you just try to stick it into the socket it becomes obvious which tab needs to be modified.