The PO of my 107 had gone to H4s for the H/L lamps...and when he did the conversion, he kept the sheet describing the method for aiming the headlamps.
Basically it's this...
...and it's done on a level floor/parking lot/dealership garage...
#1.) Start with your vehicle approx. 4-6 feet from a wall. Lightly mark the center of the beam (both V and H) on the wall in pencil.
#2.) Next, back the vehicle up approx. 30 feet. The center of each beam, if aimed properly to begin with, should have dropped approx. 10cm. from their starting positions and they should not have moved inward or outward at all.
Now, I'm trying to remember this from memory at 0245 in the morning...I'll see if I can find the form and either post it here or "quote" it directly.
As for the High-Beam Only headlamps, they're aimed in a similiar manner.
The key though is: You don't want the D-Side Beam going up and out and the the same for the P-Side. And when you hit the "HIGH" beam switch...you don't want to be blinding aircraft in the vicinity.
Hopefully, that'll get you in the ballpark and not turn your oncoming fellow travelers into paparazzi-rejects...
