Fit for 4 stroke motorcycle,disc-brake front tire * Fuel Sensor Resistance: 510ohm (eg: Honda) * No friction or contact between the hall probe and the magnet. * Engine rotate speed comes from the ignition signal. The sensor wire is normally contacted with the positive side of the magnetor or directly wired on the rectifier * Do NOT wired on the headlight if it had been modified as the HID Xenon light. Instead, connect it on the headlight control wiring.