I have a good (vacuum tested) used European headlight adjustment switch and trim piece that will fit early W126 models (1985 and earlier). This allows you to adjust the height of the headlight reflectors to compensate for loads in the rear seat or trunk, or if you want to raise the headlamps higher / lower to suit the road conditions.
An installation diagram is in the ShopForum archives. If you can't find it, let me know and I'll find one for you.
$20 includes shipping anywhere in the US.
EDIT: Switch and trim are sold!