As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED A WING OVHT RED CAS MSG IN FLIGHT. CREW CONSULTED QRH, ELECTED TO RETURN TO CLT WITHOUT INCIDENT. MAINTENANCE INSP WING ALL OFF/STBY/NORM SW AND FOUND WIRES LOOSE ON SWITCH. REPAIRED WIRES AND OPERATIONAL CHECKS WERE PERFORMED PER THE AIRCRAFT MAINTENANCE MANUAL. AIRCRAFT WAS RELEASED FOR SERVICE.