If you arent lucky enough to get hold of some Honda OEM speedo sensor plugs then you can wire-up your Speedohealer with two 3-way connectors.
These i bought from Kojaycat on ebay UK but apparently i should of got marine waterproof 3-way connectors.
Whichever Speedohealer cable you have (i had one off my GSXR600) you can cut the plugs off and Healtech provide a installation guide http://www.speedohealer.com/your_pic...r1000rr_08.pdf
To do this mod you really need to get under your fuel tank, this can be done easy by undoing all 4 tank bolts and moving the tank to one side. Cover your frame with a towel so it doesnt get scratched like mine did.
Like it says in the Healtech Guide, cut off the speedo sensor plug then once re-wired it should look similar to this
The final bit is the hardest, wiring the harness wires to the connector, because their is little room to manouver under the tank. Saying that, i did manage to solder the terminals on.
The beauty of using two 3-way connectors over Healtechs method, is the Speedohealer cable can be removed at any point and the old sensor cable can be simply reconnected.
Ive not done a sprocket convertion yet but the indicated -5.2% has put my Fireblades speedo just +2mph over at a 90mph motorway cruise, compared to my tomtom sat nav speed.