As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HPN/PHL - FLT 3158 - WHEN THE GEAR WAS SELECTED UP AFTER TAKEOFF, THREE AMBER LIGHTS STAYED ON WITH GEAR UP. CREW SELECTED THE GEAR DOWN, TURNED BACK AND LANDED IN HPN WITHOUT INCIDENT. REMOVED AND REPLACED THE 3261-K13 RELAY. ALSO, REMOVED AND REPLACED THE PSU AS A PRECAUTION.