By the way, I see what looks like Bentley type diagrams. Use an ETM. Instead of fishing for wire colors, drape the harness out, and just be logical. Some things will be obvious, there's just nothing else they reach. Anything ambiguous, think of what it could be, then go to the ETM's DME plug pinout explanation. Find the signal for what you think it could be, and ring it through with a multimeter. Shouldn't take more than a few minutes.
If you get stumped let me know, I can come by on the weekend sometime and we'll sort it out in no time.