As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW HAD NR 2 ENGINE FIRE WARNING ON SHUTDOWN. FOUND SHORT BETWEEN BOTH LOOPS IN WIRE HARNESS W0656-1001R AND W0656-1002R REFERENCE WDM 26-11-21 PG 1 SHEET 2. REMOVED OLD HARNESS. NEW ON AOG (K0390). NEW HARNESS NEEDS TO BE INSTALLED AND TESTED. REPLACED WIRE HARNESSES W0656-1001R AND W0656-1002R REF WDM 26-11-21 PG 1 SH 2.