Preventing crashes with amber turn signals.
By Daniel Stern.
The different types of headlights that come on W123 cars is explained here.
Is there a handy source for replacement Bilux bulbs for
my 115's European headlights?
What about those brighter bulbs? Yeah, ABOUT them...
How daylight running lights are accomplished and why.
For lights that need to be optically aligned (ie, not sealed beams) there are two adjustments: left to right and height. To set the hight you need level ground. But, not for the left-right adjustement.
REAR fogs? Yup. Explained herein.