The bike or at least rear wheel needs to be going round to enable you to select up into second. Its a kawasaki thing, maybe other makes too.
If you're getting 12 volts (battery voltage) at the push on connector to the neutral sensor, then the sensor is not working, or to much oil in the engine can some times cause the internal contact not to make.
You can unscrew the neutral sensor and check the little nipple on its end is slightly sprung loaded, and clean it.
For Tech Questions Bike Model letters are more useful than saying the year, for uk owners anyway, as registration year is not always year of manufacturer model.
Last edited by ninjayorkie; 03-02-2016 at 12:32 AM.