It always bothers me seeing other vehicles with tail lights out or worse, no turn signals. I noticed today on my pre ride walk around (yes, I do one- every time w/o fail. The habits of Naval Aviation are in my DNA) that my right rear tail light was out. The running light, the addtl brake light and the turn signal function were all in op? Bust out the tools and start trouble shooting with no success. I have a few motor head friends whom I'll be reaching out to tonight to see what I am missing. In the interim, I was "that guy" who I hate so much without the tail light. Gremlins in electrical system are the worst of all ailments in bikes. Catching them and eliminating them is now a all consuming effort.