I am good with electronics, i build my own drones, so I am handy with a soldering iron and wiring mainly. There should be a 54pin connection to the a av tuner if my memory serves me right and I'll need to tap into the third row of pins.

 

When I purchased my car it had all type of stuff in it dealing with the radio. Let me see what all it is and see if any of it would be useful for you to go off of.

 

Ok....snapped a few pictures. The car video interface I think was connected to this big Alpine thing. I never really played with it, I just snatched it out after the car was dropped off. I do remember seeing a video on this same box and how it worked.








Im trying to keep up with this post between work, school, wife and dogs lol. I think what your trying to achieve I was going to do in my 750 but decided not to as even with a few interfaces would have been a huge job. Maybe this
https://naviks.com/i-24076436-2004-2...ef=brand:97227
or this https://car-solutions.com/en/video-i...ontinental.php can help. I hope some of this info is useful to you.

 

I belive that's our way in the apline box if my memory serves me right was the setup for the rear entertainment screens and was set up to feed into av one.

Found it

https://www.google.com/amp/s/forums.vwvortex.com/showthread.php%3f2963413&amp=1

The pin numbers r there but I am not sure if it'd for the analog or digital tuner. Regardless the alpine box is the solution, the cable that goes into the tuner is the av input.

https://www.kufatec.com/de/alle-produkte/video-in-adapter-tv-tuner-33338

This is the part I believe that will work but how does it conect?

Thanks for all the help pictures were excellent and definitely helped me understand the setup better.

 

Don’t know if you ever ran across these threads but I’ll post it here.
https://www.6speedonline.com/forums/...-headunit.html

 

I have emailed a few companies regarding there head unit integration. Next set is to strip the boot to see what I have to work with mainly the tuner. If I can identify the pins I'll make single pin connectors and tap into the av that way. After that I'll make a harness or buy one online.

 

I'll sort out the harness, when I have a clear pictures on the pins. Thanks for all the help.