Delete your big clunky fender tail light, and upgrade your turn signals to LED all in one go.
Get rid of your stock fender tail/stop light. You don't want it anyways! With these lynx turn signals (other styles available). Very simple 4 wire design with a driver unit to prevent burning out LEDs from too much current. They are are red when riding, flashing yellow when turning, and even brighter red when stopping.
The other styles available are listed here. With even more on the way!