As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE COMING FROM F/O WINDSHIELD NEAR HEATER TERMINAL. MAINTENANCE INSPECTED WIRING AND FOUND A LOOSE WIRE ON THE FIRST OFFICERS WINDOW AT THE HEATER TERMINAL L2. WIRING INSPECTED FOR DAMAGE, NO DEFECTS NOTED. TIGHTENED CONNECTOR, OPERATIONAL CHECK GOOD.