I posted this on Benzworld, but only 79mercy took a nibble.

I've been trying to wire my 300D for rear fog lights, but I have been unable to get them working.

I followed the instructions by IQ678 to the letter and for the life of me only the front yellow lights turn on when I pull the knob out into the second position. The little idiot light on the knob as well as the rear lights do not turn on.

I went through every connection and resoldered everything. The ground is running directly to the chassis underneath the cluster.

I have no idea why this isn't working.

Could anyone shed some ideas on my problem?

__________________
-Typos courtesy of my mobile phone.