Pinout diagram for A4 speedometer, manufactured in 1996, wanted

Hello everyone,
Perhaps someone can help me. My neighbor has a 1996 Audi A4 and is having problems with its speedometer.
Please provide the text you would like me to translate from German to English.
I'm looking for the pinout diagram for this tachometer!
,
Audi A4, manufactured in 1996.
4D0 919 034F
Please provide the text you would like me to translate from German to English.
...it's one of the first VDO A4 speedometers that still has two 26-pin connectors (green and yellow).
...there, I would specifically need to know where the ground (GND), 12V, and K-line connections are located.
Please provide the text you would like me to translate from German to English.
...I've already done a ridiculous amount of Googling!
Thank you in advance.

Regards,
Monchi.

Blue/26-fold

03 - Terminal 15
04 - Terminal 15

Yellow/26x

09 - Terminal 30
10 - Terminal 30
18 - Terminal 31.
19 - Terminal 31.
20 - K-line