What was found
AFTER TAKEOFF, RIGHT MAIN GEAR SYSTEM-A RED LIGHT REMAINED ILLUMINATED. GEAR RETRACTED, BUT GEAR DOORS REMAINED OPEN. RECYCLED GEAR, BUT RIGHT MAIN GEAR SYSTEM-A RED LIGHT RE-ILLUMINATED AND GEAR DOORS WOULD NOT CLOSE. 4-2-01 (PDX) - SWING LANDING GEAR. ABLE TO DUPLICATE PROBLEM. SWAPPED LEADS ''A'' UP AND ''B'' UP. ''B'' RED LIGHT ILLUMINATED WITH GEAR IN UP POSITION. DEFERRED RED ''B'' LIGHT PER MEL 32-60-1A. 4-4-01 (PDX) - FOUND RT ''A'' HARNESS TO BE BAD BY SHAKING IT WHILE GEAR IS UP. REMOVED AND REPLACED HARNESS ''A'' UP, PER MM 32-61-01. CYCLED GEAR 15 TIMES AND SHOOK ALL HARNESSES. GEAR SYS OPS CHECK GOOD.