What was found
DURING APPROACH, NOSE GEAR DIDN'T INITIALLY SHOW GREEN UPON BEING SELECTED DOWN. INDICATION WAS GRAY IN TRANSIT FOR AROUND 5 SECONDS. THE INDICATION THEN MOMENTARILY SHOWED GREEN AND THEN CHANGED BACK TO GRAY. THEN GREEN WOULD DISPLAY FOR LESS THAN A SECOND FOLLOWED BY A GRAY TRANSIT INDICATION AGAIN. THIS HAPPENED AROUND FOUR TIMES BEFORE SHOWING A CONSISTENT GREEN DOWN. NO CAS MESSAGES OR AMBER TRANSITION INDICATIONS APPEARED. CORRECTIVE ACTION: REMOVED NLG WIRE HARNESS ASSY AND INSTALLED A CUS. SUPP NEW UNIT VERFIED NLG WIRE HARNESS RE ROUTE IS C/W IAW SB680A-32-06 PERFORMED A SATISFACTORY LDG OPS TEST WITH NFF WORK PERFORMED IAW AMM 32-20-00,