I have a commercial camera + LCD display package and what I am trying to do is use just the camera part, with my double din unit which includes an LCD display all ready to accept a reversing camera input.
The camera has one of those tiny DIN type round plugs on the end of its cable, with four pins rather like an S-plug.
Obviously I need to either work out the pin out of the plug or cut the plug off. So far I have broken into the side of the cable and I was expecting to see video, 12v and ground wires.
Instead what I have found is(this is measured relative to ground):-
A Reddy/orange wire which carries 12v A black which shows 2.1v A white which shows 3.4v
A screened yellow, which is obviously the video out. Its screen is at ground potential, but I confused by the voltages on the black and the white. The camera has no IR LED illumination, but I suppose the wires might include the feeds for such. I am also puzzled as to why the screen seems to have been used for the ground, if indeed it has, because it is more usual to provide a proper separate wire for the ground.
Another more industrial camera I have, has an identical plug and does include IR LED lighting. It is the same type as often seen on tipper and skip lorries.