Battery draining fast

Pictures of the regulator wiring and the back of the alternator may help everyone understand what is in your car. I too, don't know what that second green wire might be. One thing for sure about old cars is that things get changed and rewired often by people who don't really understand what they are working on. If you did accidently short the alternator output stud you may have blown the fusible link in the charging circuit.

You're going to need a meter to make some voltage measurements and trace around some of the wiring paths. Do you have a meter?