Neutral light does not come on 2000 xlh sportster

SOURCE: headlights and tail lights will not come on but

Has to be a bad connection, pull the headlight out and check the plug (or wires) in and around the headlight.

SOURCE: 2000 HD Sportster XLH - makes "clicking" sound trying to start

Ok, If you are absolutely sure the battery is good, there are several possibilites. If the battery is over a year old, take it to an automotive parts store and ask them if they can load test it. They'll usually do this at no charge.

If the battery is good, the first problem could be in the starter relay. Look at the end of the starter from the right side of the bike. You'll see a plate on the end that is roughly shaped like a pentagon. Just above that plate is a plug with a single wire. Unplug this wire and use either a test light or a digital volt ohm meter to check for voltage when you press the starter button. If you do NOT have voltage and the clicking you are hearing is coming from under the seat, you probably need a starter relay.

If you have 12 volts on that wire, you're problem is in the starter. Disconnect the negative cable from your battery. Now, take the three small screws out of the back of the starter that holds the pentagon shaped plate on. Underneath the plate is a plunger and a spring. Remove these parts and look at the copper contacts on either side of the solenoid and on the plunger. If they are burned badly, you need to replace them. You can get the parts through an aftermarket supplier and they are not very difficult to replace. Usually, it can be done without removing the starter. Simply replace the contacts and a new plunger comes with the parts kit. Reassemble the starter, reconnect the battery cable, and you should be ready to go.

Good Luck
Steve