Audio 20 and the back up camera
At first...sorry my english..Younger , when I had to study english...I was fishing..

My car is MB W204 -08 and I bought this item http://www.ebay.com/itm/OEM-Style-Reverse-Camera-Interface-Mercedes-Benz-W204-C-Class-W212-E-Class-/261072105243?pt=UK_In_Car_Technology&hash=item3cc91c2f1bAll the wires is hooking ok...
Now when the engin is not running..the picture is pretty ok.
After I start engine, the picture of camera begin twinkle and after while break off.

Kindly
Jussi from cold Finland




My OEM factory installed camera was doing it off and on, but I could never get it to act up for the dealer. I got video, and from that they were able to get an idea of where to look. It turns out that my factory wiring harness for the camera had a bad "Video Ground" connector that looked like it was fully inserted but would not make a good connection.
Another thing I would look at would be adding ferrite loops to the cabling to minimize interference.
Good luck!
Solution was very simple..
I made it whit relay adding a Circuit from 5 amp. fuse to pin 30.
Ground from pin 85...Reverse Light wire to pin 86..and Camera power to pin 87.
Ewerything works excellently...
kindly Jussi... from cold springlike Finland ( last night temperature was -10 C )



