As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH, NOSE GEAR GREEN DOWN AND LOCKED LIGHT FAILED TO ILLUMINATE INITIALLY, IT CAME ON A FEW MINUTES AFTER THE GEAR WAS DOWN. THE AIRCRAFT WAS FERRIED WITH THE GEAR DOWN. MAINTENANCE FOUND ONE WIRE IN THE DOWN AND LOCK SWITCH HARNESS CORRODED AND BROKEN (DUE NICK IN WIRE INSULATION). THE SWITCH WAS REPLACED.