thanks for the try, but there arent anything close to that many wires for the stereo. I have the following wires, and have ID for some:
Violet/Gray - Switched 12v
White - Power Antenna
Yellow - Speaker +
Yellow/brown - Speaker -
Red/green - ?????
Lt Blue - Speaker
Blue/Red (or maybe Orange) - Speaker
Gray/Red - ?????
Brown - Ground
this was really a mess.. this doesn't even count the 6, yes 6, various types and gauges of speaker wire that was jumbled in there! all of it just twist spliced and wrapped in electrical tape
kid didn't even try to tuck the wires behind the dash or under the carpet, they were routed out the side of the console and over the seats
I found a small article on unofficialbmw, but it didn't explain anything about the tach/mpg gauge. but it did answer the stereo wiring stuff, so thanx for that