Any ideas

Neautral light come on and is on all the time any ideas?

Switch buggered?

Or wiring plug come off?Not sure if the wiring coming off would illuminate the light tbh though

If it's wired up as in the bike it could be the switch (disconnect the wire and see if it goes out) or a short to earth somewhere in the loom. If you've altered the loom so it'll start in gear, then it could be that.