May be a simple fix. Have you tried replacing the bulbs? You might want to get a new bulb (if you haven't already) and try one side at a time. I have had similar problems, only finding out later it was just a bulb.
Thanks to all for their replies....Last night I was starting to work on on all the the small things before tackling the combination switch. I started with the fuse panel...and I found a blown fuse. I replaced it with a 10 Amp fuse and the signal lights worked.
Looks like I'll be returning the flasher and 8 bulbs. Thanks again for your help.