Ralph, before you return that generator, check the voltage at the Armature terminal of the generator, and/or the Arm. terminal at the regulator. It's possible the generator is able to charge, but the cutout relay isn't closing for some reason. The fact that the circuit works from the regulator to the battery, and the generator's got residual voltage makes me very suspicious of the regulator itself. If you ground the field terminal and voltage increases at the Arm. Terminal, the cutout relay is the problem. No voltage rise at the Arm. terminal, then you do have generator problems.
Jerry
