7509 Alternator with 7930B Regulator

My buddy has a hot rod and has a Tuff Stuff 7509/7930B charging setup. I'm not real familiar with this type of charging system but from what I can figure out it is some type of Chevrolet inspired one-wire setup. Anyway one of the shop guys took the alternator off to replace the bearings and did not draw a picture of how this regulator was connected. I have the alternator fixed but cannot figure out how to hook up the little regulator. There is a red wire, green, black and blue. Can someone explain to me how this is connected? I can find references to the regulator itself but no wiring diagram.