[s-cars] Wiring specs for 93 100S Gamma Cassette plugs?

[CyberPoet]

Am looking for either a wiring diagram, color coding or
wiring specs for the stock connectors to the 93 Audi 100S
Gamma Cassette/Radio -- am getting ready to install a
replacement head unit, a Blaupunkt San Jose MP3-enabled
in-dash CD/AM/FM (hopefully this weekend). Would infinitely
rather find the info before I yank the stock stereo than
try to figure out each wire from scratch afterwards...

Thanks in advance,
=-= Marc Glasgow