Quote:

When you disconnected the supplied regulator did you re insulate the brush holder nearest the alternator output stud? It states in the alternator instructions this brush must be grounded. If it is still grounded the regulator on the firewall will not regulate the field voltage. With the brush grounded the alternator is in the full output mode. Let me know.
Doug



Looks like the regulator on the back of the alternator used the #1 terminal to ground the field and regulator. You need to pull the #1 field brush assembly, and re-install it with the fiber washers to isolate it from the case.
Or you could just hook up the single wire regulator on the back of the alternator, and not use the factory wires?