i have a similar problem with my 600rr. mine came with led turn signals up front and integrated tail light signals (led as well) in the back. and now the rears don't work at all and the fronts blink super fast. I'm not actually sure they ever worked, but I noticed it after i had unplugged (and replugged) all the lights for midohio. actually, now that i think about it, i didn't plug in the little bulb for the light between the headlamps... but i can't see how that would be affect the turn signals. I'll try to get that plugged back in and see if that helps, though.