The DVM was grounded at the fender and the battery. Each time I got the 8 volts. I did use the test light at a temp ground by connecting on end to the battery and the other end touching the base of the bulb, with that I saw no change in brightness.
Sam: Are you saying if one side blinks the other should blink as well? is thee one set of contacts in the flasher or two?
I am starting to think that the light socket is bad, maybe where the wire connects to the socket? I'll have to pull off the rubber grommet and check, maybe drop a little solder on it.