mercedes screen

[michael2]

Hi,
Mercedes Sclass350 monitor and i want to use it as a head rest monitor for my car.i have not been able to figure out AV input pins.
there are 4 wires: brown,red,green/white,green.
and
1 thick black cable(4wires inside the thick cable):-
1:ground wire with transparent sleeve,
2:yellow
3:black
4:brown

Note: display logo appears when i connect 12v to brown and red(not thick cable), but i coundnt find AV in out pins(source)
there are 3more RCA pins below the monitor for external input.
2 head phone sockets are there with volume control..

I'll be happy if some one could figure out atleast 1 AV input.(AV1 or AV2).

[osvikvi]

Maybe I'm a bit to late in reply but anyway, here goes,

Red and brown are indeed for power, green should be for audio open the rest of the device to see for + and - but i think white is - or try it with a tester.

In the black sleeve you will find probably 4 wires for a "S-video" signal, which is basicly the same as a "composite" signal.

shield = Gnd (Ground Y) Pin 1
Black = Gnd (Ground C) Pin 2
brown = Y (Intesity) Pin 3
yellow = C (colour) Pin 4

it's possible that I'm wrong, and that H and V should switch, but normally, it doesn't harm if you try the different options, the same goes for a composite output. On a composite you just have to take Y and C together on the tip and both Gnd's on the shield.