As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR-IN-TRANSIT LIGHT DID NOT EXTINGUISH AFTER TAKE-OFF AND GEAR UP. PILOT CYCLED GEAR AGAIN WITH SAME RESULT. PILOT RETURNED TO DEPARTURE AND LANDED. MECHANIC FOUND THAT THE LT POWER LEVER SWITCH HAD FAILED. REPLACING THE SWITCH RESOLVED THE PROBLEM.