I have a couple year old YearOne rear light harness. I bought it new from YearOne and all is in tip-top shape with the exception of one light socket. It had a loose wire on it and a new socket was soldered in. I'm replacing the entire harness with an aftermarket, so I will no longer need this.
https://www.yearone.com/Product/challenger-cuda/rl71$147 new, asking $80 + shipping