Turns out the original switch was not bad. I guess after I checked the fuse I should have checked the actual wire which supplies power to the switch (green with black stripe) for the taillights.
It turns out one of the connectors of the fuse box wasn't making contact with one side of the fuse.

I didn't notice that until I pulled the fuse box apart looing for a problem inside the box.
Now I have a spare combo switch and a nice intermittant wiper switch installed. Not a bad deal I guess. It turned out one of the junk yard switches was bad as it started to smoke about 30 seconds after I installed it.