Thanks for the tip with the "flush plug"! I was frustrated for a moment when the mic didn't work. Now it works as desired.
- Complete cable and receiver set stowed in the lower centre console (incl. antenna).
- Took power from the cigarette lighter with the following part:
Caliber MAU201 Marine USB Socket Charger
- Mic positioned where the car manufacturer would have intended it (if the hands-free system had been installed at the factory), in my case in the centre console under the original radio slot, there was a camouflaged hole.
It took two of us about 2 hours... now everything works and you can't see a single cable, only the display.
Reception is top, we have also installed the earthing.
I can recommend this product.