Help! 2 wire Alt convertion question?

I believe your problem is the voltage regulator... I converted mine to a two field alternator (75 amp I believe it was) and used this regulator with no problems. Electronic voltage regualtor:

http://shop.advanceautoparts.com/we...CDelco_18050444-P_204_R|GRP60003_994526920___

You can also order the correct connector for the voltage regulator at NAPA... you can get all you need at NAPA also.