Blast Speedometer stopped working

[SwanRonson]

The speedometer on my Buell Blast 500 stopped working. Tried replacing the speedometer itself but still won't work. It lights up but doesn't register how fast I'm going. Looking to see if any knows where the sensor is so I can try replacing it.

 

[chief_of_smoke]

http://https://acrobat.adobe.com/id/urn:aaid:sc:VA6C2:b3debe2a-03a9-4930-a63e-eff0792c6fe9

 

[chief_of_smoke]

Here is a link to an 2007 manual. There is a big section on the speedo.