What was found
(CAN) SURGING/FIRE WARNING WHILE APPLYING REVERSE AFTER LANDING, THE ENGINE SURGED AND THE FIRE WARNING WENT OFF AS THE ENGINE WAS BEING SUBSEQUENTLY SHUT DOWN. INSPECTION FOUND BURNT WIRING HARNESS INSULATION NEAR THE REAR OF THE ENGINE AT THE FIREWALL. NO OTHER STRUCTURAL DAMAGE WAS OBSERVED, THE FIRE BOTTLES WERE NOT USED. ENGINE WILL BE REPLACED.