Does anyone have a Wiring Diagram of a A6 seat heater?
Thank you.

Well, I downloaded a set of files ones - from a Russian site.

See if you can use at least some of it as an input for your purposes....
Link to the schematics:
http://www.autolib.diakom.ru:8001/CAR/Audi/1996/A6/SYSTEM%20WIRING%20DIAGRAMS/

To the file:
http://www.autolib.diakom.ru:8001/CAR/Audi/1996/A6/SYSTEM%20WIRING%20DIAGRAMS/fig34.pdf

Good luck,

John in Norway