250-500cc Lighting problem on a 1995 husky 360

Hi Everyone,
I am new to this forum and to Husky's, I just purchased a 1995 street legal 360. The bike is in excellent shape with a recent top to bottom rebuild. I got it home to discover the lights are no longer working. I bench tested the lights and they do work, I also checked all connections and cleaned all grounds, I bypassed the light switch and still nothing. When I put a meter to the hot coming off the Voltage rectifier I get readings jumping around from 0 to 18 volts. I have never worked on a light system that did not have a battery before. The bike starts and runs fine making me feel the magneto and stator are fine (only a guess) and possibly the rectifier is bad?
Any ideas or help is appreciated.

Thanks, Jeff