As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT INTO HOME BASE AIRPORT, FLIGHT CREW SMELLED ELECTRICAL ODOR IN COCKPIT FOLLOWED BY ALL ANNUNCIATOR LIGHTS ILLUMINATED. CREW DECLARED AN EMERGENCY AND LANDED WITHOUT INCIDENT. INVESTIGATION REVEALED FAULT IN ANNUNCIATOR PANEL. CESSNA REQUESTED PANEL BE SENT TO THEIR LAB FOR INVESTIGATION. 38 HOURS ON UNIT SINCE REPAIR. REPAIRED UNIT, DID NOT WORK PROPERLY ON INSTALLATION. UNIT DID NOT WORK IN BRIGHT MODE.