does anyone know what color the positive wire is on the a/c clutch pulley?

 

Dark Brown and Yellow(DB/YL).
I think Black and Grey is the ground(Bk/Gy)
8W42-5 section in the service manual
Hope this helps.

 

Well if you can decipher this it should help you, I'm thinking it's the DB/YL wire which would be Dark Blue/Yellow?



Edit: I think butchowens is right it's probably dark brown/yellow not dark blue. Black/Grey is most definitely the ground.