As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT RT EMERGENCY LIGHT AT BS 639 IS INOPERATIVE. UPON FURTHER INVESTIGATION, FOUND AFT RT OVERWING EXIT EMERGENCY LIGHT SIDEWALL SIGN CONNECTED TO WIRING FOR OVERWING EXIT DOOR HEATERS. RECONNECTED AFT RT OVERWING EXIT EMERGENCY LIGHT SIDEWALL SIGN & OVERWING EXIT DOOR HEATERS TO CORRECT RESPECTIVE WIRING, PERFORMED GOOD FUNCTIONAL TESTS OF DISTURBED SYSTEMS AS DOCUMENTED IN EXTENDED.