Disconnect the connector from the neutral switch . Make sure the bike is in neutral . Put the bike in !st gear then shift up to neutral. Turn the key on. Ground the wire to see if the N light comes on. If it does , turn the key off . Take a good known test light and attach the alligator clip to B+ . Touch the probe to the metal protruding from the switch. If it lights the switch is good. If not , move the shift selector to see if it does ever light up. If these check o.k. , look at the wiring plug that pushes onto the switch . This may be enlarged and needs to be crimped just a little to get a better connection .