Originally Posted by Adriel

Now I understand how city lights are made operational, by actually taking a risk and looking at the plug. The city light pin is there, so guess that means the bulb is also present.

What I don't see is how one could swap the fog light power from low beam to the turn signal position. Only way to get to the back side of the fuse box is from under the dash. What makes it even more a challenge is the wires are screwed on! Mercedes once again over engineers...

Guess better to leave what works alone!