As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW INFLIGHT T1306/21OCT - LEFT ENGINE FIRE LOOP ILLUMINATED FOLLOWED BY FIRE INDICATION. SHUT ENGINE DOWN. RETURNED TO DFW AND LANDED WITHOUT INCIDENT. SINGLE ENGINE TIME 5 MINUTES. FOUND 2 CONNECTORS BAD ON LOWER SUPPORT DETECTOR. REPLACED NEW CONNECTORS. SYSTEM GROUND CHECKED NORMAL OPERATION.