As far as I know, there are no firms that import the 500E specific euro lens. I just went through this with updating my '92 to a '94 look and had to go with the original '94 lights instead. I tried to use the std euro lights and just change the reflector and outer lens, but these are no longer avail from Mercedes. The fog reflector is different from the aux reflector in that is positions the bulb higher up in the parabolic curve, thus creating a top cut off for the light pattern. The aux reflector positions the bulb at the apex to better distribute the light. Also the outer lens on the 500 is clearer than that of the std W124 to allow less diffusivity of the light.

As far as headlight wipers go, when updating to the euro lenses, you need to update the wipers/motors to '94-'95 parts. The mounting locations are different. The lower trim cover also has to be changed.

Peter Smith
'92 500E