What was found
AFTER TAKEOFF, GEAR WARNING LIGHT REMAINED ON. LANDING GEAR AND DOOR INDICATOR PANEL SHOWED NOSE GEAR. RECYCLED, SAME RESULT. CONSULTED ABNORMAL AND PROCEEDED TO DESTINATION. MAINTENANCE AT ILN: DURING SELF TEST OF PROX SWITCH CONTROL BOX, NOSE GEAR UP LIMIT FAILED IN B POSITION. REPLACED PROX CONTROL BOX IAW DC8 MM 32-60-00. NOSE GEAR UP LIMIT TESTED GOOD IN POSITION A AND B. NOSE GEAR UNSAFE LIGHT REMAINED ILLUMINATED WITH GEAR UP. INSTALLED NOSE LANDING GEAR UP LIMIT PROX SWITCH AND ADJUSTED IAW DC-8 MM. COMPLIED WITH POSITION WARNING SYSTEM TEST IAW DC8 MM 32-60-00-2.