Hello all!

This is my first topic, but I am a long time home mechanic and tinkerer. I was wondering if anyone has the electrical pin-out for the connection that goes into the telephone cradle base.
It is 13 wires on a 14 wire plug.
My plan is to install a wireless charging pad in its place.
Attached is the wiring in question.




If anyone knows what each color is that would be great. I metered the second from the end black and found: it is a ground and roughly 12v to both orange and blue and roughly 5v to the second black. I know there is a telephone fuse but I am not sure how it is all wired.

I assume there is also some sort of CANBUS connection and some sort of connection to the MMI for relaying the phone call to the system. I would love to play with all of that. I have an extra cord so that I can prototype, plug it in and see what happens. The part number of the cradle board is: 4F08624016PS but I am not finding much of any info on it.

Thanks in advance!!

 

Here is what I am thinking...









Might have to cut all the way through the bracket to ensure the wireless works then line it up and glue it to the charger. I might as well add in a voltage monitor on the other 12+. I hope one is battery voltage level. I will have to wait for it to come from China eBay before I build a prototype to test. They stay hot for several minutes after key off, but both go dark after, so no switches. The voltmeter and wireless pad should turn on and turn off automatically.

If anyone can get me the wiring diagram for that plug I would be very grateful!

 

Try here:
https://cardiagn.com/audi-a6-4f4f24f...ring-diagrams/

 

That got me some additional information. Thank you.
I couldn't find the pin out for that cable, but the diagram let's me know that the cradle is independent from the Bluetooth and its antenna. I recently updated to mmi 4610 and now don't see Bluetooth anymore, so might need to look into that, but that's a separate issue.

I guess at this point I'm going to wire one of the B+ I found to the wireless charging pad and the other to the mini voltmeter. Probably do a temporary fit and ensure it works as expected, then do something permanent. It's a smart wireless pad, so can do watches, ear buds, and phones. Plus it won't use any of the cigarette plugs. I will keep this thread updated.

If anyone knows what all the other wires do, I'd still love to know.

 

I think there is something like voice control (not sure 100%) in coding of some module that needs to be 0 (not 1) and you'll get BT active. Can't remember exactly.. Take a look..

 

I believe you are correct. Looks like I might have to re-code the MMI to know that I have voice control and Bluetooth. The AMI still isn't talking to the system. Maybe updating those things and rebooting the system will allow it to connect, but again not really related to the phone cradle. Pushing the voice button on the steering wheel shows this message, whereas before it would give me the voice prompt:



Back to the wireless charging update:
Ordered the mini voltage gauge and should be here some time next week. I want to be as minimally invasive as possible in case those pins turn out to be something I can use (like a read / write CAN bus location). So I found a completely non destructive and reversible way of dealing with the plug (even though those cradles are essentially worthless as they don't fit any phone made in the last 20 years LOL). I am going to move the ground next to the 2 12 B+ and then I have a plug from my Arduino stuff that fits perfectly. You simply lift the black plastic locking tab slightly and pull the pin out backwards. Then on the new plug side I can solder and heat shrink on my voltmeter and wireless pad. If you ever wanted to plug the cradle connector back in, you would simply move the ground pin back and plug it into the board, though I never plan on undoing this unless I want to get at those other pins for something else.

 

Side note on the telephone not installed. I simply re ran CD1 of the update and everything is working again. It was obviously not working as it says I am at version 0. Once it finished and reinitialized everything I did a hard reset and just reconnected my phone.

 

So, I was looking through the service manual and found this:



Correct wires, but not correct sequence...

So it is the correct wire colors, but not in the order that they have it and it says it is a 12 pin connector, mine is 14 and one blank. But I am basically 99% sure that I am am least in the ballpark here, as the left side looks like the antenna that also plugs into the board. I know the cradle plates are different for different phones, so its likely one for like a Nokia and Motorola or something. However, it doesn't really give me much additional information. Does anyone know what the bottom wires car side refer to? Part No SW: 4F0 910 336 H is my Telephone module.
(A4: yellow, A43: white, A47: blue, A50: purple, A37: red , A52: grey, A45: green, A42: brown, A39: black(thick), A49: black(thin), A41: orange, A51: pink, A44: black)