Big lights are high and low (H4?), small lights are fogs (H1?).

I don't see any height/tilt adjustment mechanism.

In the W123 I believe the headlight adjustment switch goes in the strip above the AC controls. Where the rear dome light switch is.

I suspect you correctly fit the pins from the US connector to the Euro connector. Do a search on the proper pin connections for your car.

Sixto
... stay tuned