How many connector terminals does the regulator have? There were two varieties, one with 3 terminals and another with 4. I have testing and repair information on both types which I can scan and email. These regulators were designed to be repaired- - - -they're not throw-away units. It looks like there are two power transistors involved in the circuit, not one, as I had originally thought. It looks like you've got at least one transistor with a dead short supplying full voltage to the field circuit in the alternator.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!