7509 Alternator with 7930B Regulator

Ok, I sorted it out. I've taken the regulator off the alternator and I'm using a Bosch RE55 regulator in place of the old one. I have taken one side of the field and grounded it to the base. The other side of the field goes to the regulator and then there is the battery cable left. The blue wire I''ve just cut off & blanked off with tape.