Can anyone help me with the proper proceedure for aiming HID headlights on a 2001 SLK 320? The aiming controls are easy enough, but I can't seem to get them perfect. Minor adjustments seem to create unexpected results. Thanks!

 

I did mine by driving up to with in 1 metres of a wall. Aligning both on the same plane thru the middle of the beam,,
put black tape on wall, thru the middle
then drove backwards about 5 metres.
Adj so middle of beam was about 3 inches lower.
Seem perfect on road.

Bazzle