Electrical Help Please

I turned the key on and held a wrench in front of the alternator pully. It almost jerked it out of my hand. Does that mean the alternator and voltage regulator are probably OK?

"This probably means The rectifier and diodes aren't working". Are they supposed to with the key on and the car not started? (I had an electrical by-pass as a child) :rofl:

Good conclusion.
I wouldn't be buying a regulator on the way home, I agree it's likely the rectifier, if it's not charging, or something inside the alt,. "output" side.
A voltage reading would be nice.
Running should be 13.8 - 14.2 ish .
(The rotor/pulley needs to be turning to sense/test the pulses from the diodes).
Cheers