As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CARGO SMOKE LIGHT ON CWP ILLUMINATED INFLIGHT THEN CARGO, LAVATORY & AVIONICS LIGHTS ILLUMINATED ON SHUTDOWN. PERFORMED CONTINUITY CHECKS ON SYSTEM'S WIRING, NO DEFECTS NOTED. R & R AVIONICS & LAVATORY SMOKE DETECTORS FOR TROUBLESHOOTING OPERATIONS CHECK OK. WEU REPLACED FOR TROUBLESHOOTING OPERATIONS CHECKED OK ALSO PERFORMED OVERWEIGHT LANDING INSPECTION.