As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT OBSERVED SMOKE AND ODOR COMING FROM INSTRUMENT PANEL IN THE AREA OF ELECTRICAL SWITCHES, ELECTRICAL SYS WAS SWITCHED OFF AND ACFT LANDED SUCCESSFULLY. AFTER EXTENSIVE INSP TO DETERMINE CAUSE THE NAV LIGHT/RADIO DIMMER SWITCH WAS FOUND INOPERATIVE AND OVERHEATED. DIMMER/SWITCH AND LOCAL WIRING WAS REPLACED WITH NEW AND ELECTRICAL SYS OPERATED NORMALLY. ACFT WAS RELEASED BACK TO SERVICE.