I want to mount a GPS on my FJR. There is a threaded hole on the horizontal member between the Left and Right handlebar mounting positions. Does anyone know what size bolt it takes? I am a life-long Harley guy who recently bought a FJR. I now own one in AZ and one in NC that I will use to visit my grandchildren. At 72 years old, it sure is a fun motorcycle and should keep me on two wheels for another 10 years.