What was found
NO.2 OVRHEAT LT ILLUM IN FLT. SEE RELATED FIM 26-10 TASK 811. PERFORMED FIM TASK 26-10 TASK 801. NO FAULTS FOUND. PERFORMED FIM TASK 26-10 TASK 811 ( EXCEPT ENG RUN), PERFORMED FIRE DETECTION LOOP RESISTANCE SYS TEST, NO FAULTS. ON MIDS UNCONNECTED FROM HARNESS . ALL ACFT WIRING FOR EFFECTED SYS, NO FAULTS .WDM 26-11-04 . REPLACED HARNESS MW0326 AS REQUESTED NO HELP , FAULT COMES BACK ON HIGH POWER RUN WITH 5 MINS . REPLACED ENGINE & FIRE CONTROL PANEL & ACCOMPLISHED TESTS DUE TO CHRONIC HISTORY SUGGEST HI POWER ENG RUN #2 ENG TO WHILE RUN AT TO POWER FOR A COUPLE MINUTES , TRIED FIRE ACP WIRE CHKS FROM ENG. OVERHEAT MODULE (M279) , MEGGERED PLUG PER FIM 26-10 TASK 811. HEALTH CHK PER AMM 26-00-01-400-801 ALL TESTS PASSED. CHECK FOR FAULTS. TEST IN BOTH , NO FIRE TEST ON 2 BOTH SWAPPING TO A D998 PINS 10 TO 12 , NO SHORTS NOTED FROM PIN TO PIN AND NO 36-11-00-700-801 AMM , ACFT WILL NEED FUEL TO ACP HIGH POWER 29-3111-9-0013, HANDLE LIGHTS & TEST , SWITCHING TO B HANDLE TEST NORMAL , SHORTS PIN TO GRD. , ALSO MEGGED OUT PINS 24 & 25 ON LOOP A , RUNS AFTER CHKS ARE COMPLETED. BACK TO BOTH HAVE NO LIGHT IN HANDLE . FIRE PANEL WAS CHANGED NO SHORTS NOTED , ALL CHKS DONE WITH OVRHEAT DETECTOR.