When i got my bike,the tachometer didn't work.Looked in the cable and i noticed the bit that spins inside was missing.I got a replacement yesterday and connected it to the engine,checked that it did spin, which it did then connected it to the clock.Nothing happened..So i whipped it off to find that the brand new inner cable had been chewed up! So im guessing that's why there was no cable in there when i brought it,but why the hell would the clock chew up the cable?