You may have to trace the wire from where you can see it as it courses under the RIGHT engine side cover up and under the RIGHT vent. On mine, the spee sensor wire is grey and courses very close to the rear brake MC reservoir.
Biker John, My 2010 is 5 km/h out at all the speeds I will ever use. I have two GPS units which give me the same answer. I think some bikes may have more accurate speedos. I don't like the odometer racking up phantom distances.