Generator Check '65 BJ8

["Doug Newton" <dnewton@nappco.com>]

I just installed a new voltage regulator and had my generator rebuilt and I
need to verify the output of the generator. Is there any reason I should be
getting a reading that bounces around from 0 to 18 if my "new" digital
voltmeter is working properly?

 

I am checking the generator by touching the red lead to ground and the black
lead to a jumper connecting both terminals on the generator.

 

Thanks for your replys