As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOTS WINDSHIELD HEAT WAS NOT WORKING. FOUND THE PINS IN CANNON PLUG J195 FOR WIRES H15A8 AND H23A8 BURNED. AFTER LOOKING UP THE SPECIFICATIONS FOR THE PINS IN THE MANUFACTURER'S MANUAL, IT WAS DETERMINED THE SYSTEM CURRENT DEMAND IS RIGHT AT THE MAX CURRENT LIMIT LISTED FOR THE PIN IN FREE AIR. A NON-PERMANENT INLINE SPLICE OR LARGER PIN CANNON PLUG MUST BE USED TO CORRECT THIS PROBLEM.