not charging

I am sorry it is not a one wire alternator. I have 12 volts to positive on alternator . I do not read continuity from ground to green wire until I turn switch on . The blue wire has 12 volts at all times switch on or off , we had all the wiring harness out and untaped , cleaned and retaped every wire but none were cut but I may have exposed a bad place or something. We didn't see any places and I don't know for sure how this should work ; what has power and when it should and should not have power . Thanks in advance