What was found
FLIGHT TEST: NOSE GEAR INDICATOR LIGHT FLICKERS & IS INTERMITTENTLY OFF WITH GEAR DOWN & LOCKED. FOUND IF PRESSURE IS APPLIED TO INBOARD EDGE OF MASTER DIM AND TEST SWITCH, LIGHTS (NOSE GEAR AND NR 3 OIL PRESSURE LIGHT) WOULD FLICKER, LOOSENED PANEL, AND FOUND HOSE CLAMP IN CLOSE PROXIMITY TO MASTER DIM AND TEST SWITCH. RELOCATED CLAMP, RESECURED INSTRUMENT PANEL AND TRIED TO DUPLICATE DISCREPANCY AGAIN, NOTED TO REPEAT OF DISCREPANCY, ALSO NOTED NO ARCING ON CLAMP OR CONTACTS ON MASTER DIM AND TEST SWITCH.