As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND BURNT WIRES BEHIND LAVATORY MIRROR LIGHT ASSEMBLY. WIRES BURNT & SHORTED ON CORNER OF LIGHT ASSEMBLY. WIRE LAV129A22YE BURNT IN TWO PIECES. SPLICED WIRE LAV129A22YE IAW CHAP 20-10-03. NO DAMAGE FOUND TO OTHER WIRES IN BUNDLE. OPERATIONS CHECKED EPL ON LT AFT LAVATORY. OPERATIONS CHECKED GOOD IAW AMM 33-53-01. LIGHTS, SIGNS & CALL OPERATIONS GOOD IAW AMM 33-23-00. THE ACFT WAS GNDED.