Did you install the load equalizer ? If you did then the load equalizer is bad. Did you install any other units such as flashers or converters from harley ? If you did then it is the sequence as to where you plugged in load equalizer. Meaning the plug from the bike followed by the load equalizer then whatever module you may have and then the plug to the rear to light up the tail.
Live, Laugh, Love, or Die Trying !
2011 Road Glide Ultra Merlot Sunglo