'I love it when a plan comes together!"
If all the projects were simple, and worked perfectly, nobody would ever learn anything! Once you get the crossed-wire situation corrected, I'd suggest polarizing the generator one more time, and before you reconnect the wiring to the regulator, open the top and use a piece of clean file card paper to burnish any corrosion buildup off the points. Don't change any of the adjustments, just insert the card stock between the points and gently rub any deposits away. You'll be surprised how much dirt a clean-looking set of regulator points can give up, and how much better things will work.
Jerry