this is what the manual says Calibration It's necessary set the device before use; if the dashboard shows the speed even with the bike on the rear stand you can set the indicator on the stand, in the opposite case or if you don't have a rear stand you have to set the indicator in the street: 1- Turn on the vehicle and the engine in “Neutral”, 2- Enter into “calibration” mode into 10 seconds, taking the WHITE wire to “ground” or rather to a non painted point of the vehicle frame. You may enter calibration mode only in the first 10 seconds after turning on. 3- Remove white wire from “ground” when one of the letters appear in the display (A:Red, B:Green, C:Blue, D:Orange, E:Violet, F:Light Blue), 4- Choose the colour taking the white wire to “ground” during visualization of the colour chosen till number “1” is shown in the display. 5- Remove the white wire, put into first gear and keep the engine revs around 4/5000 rpm constantly. 6- After five seconds a flashing number 2 will appear, put into second gear and continue to keep the engine revs around 4/5000 rpm constantly. 7- Continue in this way with all the gears of your vehicle. 8- When GearTronic ZERO displays the next gear (ex. If your bike has 6 gears wait will 7), slow down or stop without turn off the engine. 9- GearTronic ZERO will automatically understand that the set up procedure has finished and will switch to normal display, showing the gear inserted. 10- Isolate the white cable, if for any reason you wish to repeat the set up phase just repeat the above procedures.
