I've got an electronic odometer from a 2009 WR250f that I want to fit to an XR650 Honda. Does anyone know how the odometer pickup works that is mounted down by the hub? There are 3 wires. Using a buzz light, (on another Yamaha) I'm thinking there's a diode between two of the wires b/c I get open in one direction and some resistance in the other when switching the leads. Owners manual schematic not much help. I was hoping it was reed switch type of pickup, but must be something different. Hoping I can replicate the pickup on the Honda to make the odo work. Thanks!