Hey man, I had a similar problem as FAF mentioned/by the way his insight and knowledge was really helpful, along with everyone here. But yes do check all your conections and run through all the electrical system leading to your connections. It turned out that my problem was the kickstand switch turned on and off under vibration which was greater at the 8500/9000rpm range. (check out my post, you will get a better understanding of what kind of headachs simple things can bring). Try to jump the switch and go from there...Good-luck.