A Teenager and His Swinger

Thanks everyone for your help with suggestions of what could be wrong with the light. It turns out that the bulb socket was bad and it was sending power back to the turn signals. Since I can't afford/wait for a new tail light assembly because the socket can't be removed, I pulled out the old one and cut a socket out of a parking light from a later model Dodge truck. Then I screwed in the new socket into the tail light housing. Simple and free.

After this was resolved, the turn signals followed, and I now have everything working.