What was found
AFTER TAKOFF, HAD FIRE BELL AND LIGHTS FOR NR 2 ENGINE. WARNING CEASED, WHEN POWER WAS REDUCED, RETURNED ATL. REPLACED PYLON LOOP A-HARNESS AND LT AND RT REVERSER LOOP AND B-ASSEMBLIES. ALSO, REPLACED UPPER PYLON FIRE LOOP A AND B. OPERATAION NORMAL.