duster rear light harness?

Does anybody know where to get a rear light harness for a 71 duster? It looks like m&h has the market on making them and wont sell them to individuals. Year one says 8-10 weeks, and Im not waiting that long. Mine is still good, i just wanted a new one because it'd be prettier. I can clean my old one up, but it still wouldn't be as clean looking as a new one.