What was found
KMIA - ON THE CLIMB-OUT OF MNMG, THE LANDING GEAR UNSAFE LIGHT REMAINED ON, THE APPROPRIATE CHECKLIST WAS COMPLETED AND THE LANDING GEAR WAS RECYCLED. PERIODICALLY DURING CLIMB-OUT AND IN CRUISE, THE LIGHT WENT OUT ONLY TO COME ON AGAIN A SHORT TIME LATER. ALSO, THE INTENSITY OF THE LIGHT VARIED OVER THE COURSE OF THE FLIGHT. THE APPROPRIATE SPEED WAS OBSERVE AND THE FLIGHT CONTINUED ON TO MIAMI. REMOVED AND REPLACED THE UPLATCH (RT) SWITCH AND CANNON PLUG PER MM 32-60-0. PERFORMED A GEAR RETRACTION PER DC8 MM 32-30-0. OPS CHECK OK. (M)