As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG ELECTRICAL SMELL SHORTLY AFTER TAKEOFF AND INTENSIFIED ON CLIMBOUT. NO OBSERVED SMOKE. AIRCRAFT LANDED WITHOUT INCIDENT BUT OVERWEIGHT. FOUND WINDSHIELD HEAT SWITCH SHORTED. REPLACED SWITCH, ACCOMPLISHED OVERWEIGHT INSPECTION ON AIRCRAFT.