As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 1851 IN CRUISE THE RIGHT WING OVERHEAT LIGHT CAME ON. AIRCRAFT TURNED BACK AND RETURNED TO MFE WITHOUT FURTHER INCIDENT. MAINTENANCE TROUBLESHOT SYSTEM AND FOUND MOISTURE IN THE WING ROOT CONNECTOR FOR THE WING OVERHEAT LIGHT SYSTEM. CLEANED AND DRIED THE CONNECTOR. PERFORMED SYSTEM FUNCTIONAL CHECK, NO DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.