I have a 93 FSM (at home), and it does not have a direct pin out. I went through the electrical pages to get what I needed, as it is organized by controls ie charging, lights, brakes etc.
You should only be needing a few of the pins for power, memory power, rpm, oil pressue (light), temp guage, starter signal, ignition, GROUND. Off top of my head, I will check my wiring lists as to where I routed those to off the new ECM, this evening.
If you need a VSS signal for the ECM, you can get an adapter from the speedo cable to VSS, but the OBD I VSS signal from some speedo's are not compatible with OBD II VSS signals (which is probably what your Audi is).