Date registered: Dec 2005
Vehicle: W211 E320 Bluetec R129 SL500 - $1300 car ........ Ford F350 6l
Location: CA Bay Area
Mentioned: 9 Post(s)
Quoted: 1066 Post(s)
Those are fog lights, or high beam off-road lights.
Back in 1970's the off road racing was very popular in Europe and those lights were often imitation of the racing lights, where I recall cars having 6 additional lights 10" dia each.
Today small projector light seems to take over the mode, but mode comes, goes and come back.
Coming to those particular lights, there were poor quality with incandescent light bulb. They might add cosmetic character, but they are way bellow today's expectation in light output. I think you can find matching new lights with high output light bulbs.