No sound from av input, just picture.

[awt]

I have retrofitted navi and the oem tv runer in my e46. I want to watch videos from my iPhone on the screen, the picture seems fine, but I don't get any sound.

I have tried many different connectors and ways to connect them, but it's dead all the time. The same connectors works fine if I use them for picture.

Could this have something to do with the fact that everything is retrofitted?

On the blue plug on video module there are to wires labelled "TV audio out (+/-) that just are flying leeds (one yellow and one yellow/blue). Does these need to be connected somewhere?

My original plan was to have a module like "navontv" or "tv-free modules" so I could have stereo sound, but I can't find any of them for sale.

[awt]

It seems like the two wires from the blue connector should go to the radio module. I haven't done this, so the problem is solved I think.