250-500cc wr 250 rev counter

Hi all im using the tock speedo at the moment as i smashed my trail tech off on a track

it dont to seem to have the rev counter working up the right hand side, which wire is it that controls this??

so does any one know how i get it working with the stock speedo?

The WR250 doesn't have a rev counter, the dash is the same as the four strokes but there's no feed on the WR to power it.


Dave