What was found
(CAN) DURING TAXI, THE RT MLG UNSAFE LIGHT ILLUMINATED AND GREEN SAFETY LIGHT WAS OUT. MAINTENANCE INSTALLED LANDING GEAR PINS AND THE AIRCRAFT TAXIED BACK TO THE RAMP. DURING INSPECTION OF THE PROXIMITY LANDING GEAR SWITCHES, IT WAS OBSERVED THE TARGETS WERE INSTALLED IMPROPERLY. THE TARGETS WERE RE-INSTALLED CORRECTLY IAW MM 32-41-91 AND 32-04-121. FUNCTION CHECKED SERVICEABLE IAW MM 32-61-91. NO FURTHER PROBLEM DURING SUBSEQUENT FLIGHT.