This is for the W204 facelifted.

I have available a wiring harness OEM for reverse camera. The FAKRA connector is double, with one passthrough, which leads me to believe that it's for FL cars.
In order to make this work for your car you would need the instructions, I have found them in German, a camera and the camera module.
For camera module, you can buy a used one on ebay, I used A164 543 00 62, also known as the Q2.
Everything plugs into everything and you can avoid buying a Mercedes camera, it can work with the $20 Chinese cameras. The problem is that the Module referenced above puts out 6.8 volts to power the camera.
My Chinese camera was rated for 12 volts but is powered up just fine on 6.8 volts, see link below.
On my wiring harness for PFL, of the wires going to the camera, the brown was the camera signal, the transparent was the signal ground, the yellow was power and the black was main ground.
The wire in the provided fuse block takes a 7.5A fuse and if you find something already takes up that position in your existing green fuse block, just relocate it, remove from thisone and insert in an available slot of your existing green block, then plug a 7.5 A fuse in.
the reverse wire needs to be tapped in, the wire in the reverse lamp wiring on the passenger side, will have the same color grey/yellow and I soldered mine in.
I am adding leftover parts from my installation, as well as a UCI to jack cable.

$30+ shipping, photo is coming up




http://www.ebay.com/itm/272153455721?ul_noapp=true