Hi, I bought my Harley xl1200c a little over a year ago and it came with a run brake turn module installed. Just recently one of the rear turn signals is only working as a turn signal and and the run and brake function are not working. The other light works just fine. I have re-wired from under the fender back to the bulb. I have full power to the bulb when checked with a volt meter. The power increases as it should when the brake is pressed. Seems as though it would work but it doesn't and the bulb is fine. I'm stumped. Any help would be greatly appreciated.