Thanks!

Hmmm...interesting part is the "Replacement lightning".

Right now the left side angel eyes ="Front Parking Light" is out. That's why the left side-marker is on ...and the right side side-marker is NOT, because right side angel eyes are functioning. I guess.
I have the burned angel eyes bulb in my coat jacket waiting to be replaced. So I suppose all is cool after I replace that bulb. Haha. So better first replace the angel eyes and see what happens with the side marker before I start tearing the LCM apart

Thanks again for this information!

Edit: Because of this "dimming function" the side-marker gave out only little over 10 volts. In normal function without dimming it would be 12 volts.