Need help!!, AV INPUT Question! PIC ATTACHED

[UKenGB]

I'm still not getting this.

We KNOW that the AUX input is stereo.

We KNOW that the audio connection for the Tuner's AV input is mono.

So how can you get stereo sound from your DVD - anywhere? If the DVD's video is connected to AV input and it's stereo ouput is fed into AUX, what input can you choose that will provide both of these? Select AUX and you get stereo audio, no video. Select AV and you get the video with no sound. How can you select the 2 different inputs, one for audio and another for video?

If indeed that AV input on the rear of the centre console has stereo audio, where does that lead go? Specifically, where does the video signal go (AV on the Tuner I guess) and where does that stereo audio signal go? A wiring diagram for the UK car would really help here.

In fact I am still having difficulty getting it to work at all. I have a straight through AV lead (4 way 3.5 jack either end) from an iPod dock to the AV in and all I get is a flickering screen of black on black (strange, but that's how it appears). Changes from PAL to NTSC and vice versa just produce a different kind of flicker. This dock ouputs video perfectly to my home AV amp, so it HAS to be something to do with the car.

Can anyone who has got this working let us know exactly how you did this?

Thanks.