As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT PILOT OBSERVED THE NR 2 ENGINE FIRE LIGHT ILLUMINATE . PILOT DID A PRECAUTIONARY LANDING AT AIRPORT. MECHANIC DISPATCHED AND FOUND WIRE ON TERMINAL LUG ON FIRE DETECTOR BROKEN. REPLACED TERMINAL LUG AND COMPLIED WITH AN OPERATION CHECK OF THE FIRE DETECTION SYSTEM AND FOUND NO DEFECTS AT THIS TIME. AIRCRAFT WAS FROM OUR BASE SITE.