As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH AND GEAR SELECTION THE GEAR UNSAFE LIGHT REMAINED ON AND THE NOSE GEAR LIGHT REMAINED OUT. RAN THE CHECKLIST. USED BOTH THE PNEUMATIC BLOW DOWN AND THE MANUAL RELEASE AND STILL NO SAFE INDICATION. EMERGENCY WAS DECLARED. LANDING WAS NORMAL. NOSE GEAR UNSAFE REMAINED UNTIL SHUT DOWN. REMOVED AND REPLACED NOSE GEAR WIRING HARNESS AND NLG DOWN LOCK SWITCH.