What was found
NOSE GEAR UNSAFE LIGHT (RED) WITH LANDING GEAR HANDLE UP. ALL DOOR LIGHTS OUT. (CYCLED GEAR AND PROBLEM REMAINS, RED NOSE GEAR LIGHT ON) NOTE: NORMAL GEAR DOWN, NORMAL HYDRAULICS. AFTER 45 MINUTES, GREEN NOSE GEAR LIGHT ALSO ILLUMINATED AT THE SAME TIME, BUT RATHER DIM. *S/D* INSTALL 3 GEAR PINS. WHILE CHECKING POSITION AND LOCK SWITCHES PER M/M 32-61-71 DUPLICATED PROBLEM. FOUND CORROSION IN CANNON PLUG FOR POSITION SWITCH. CLEANED CORROSION FROM SWITCH AND CANNON PLUG. SYSTEM FUNCTIONAL CHECK OK, PER M/M 32-61-71. GEAR PINS REMOVED.