As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB PILOT NOTICED BLUE SMOKE THAT SMELLED ELECTRICAL. HE CALLED IN FOR EMERGENCY LANDING, OPEDED HIS WINDOWS AND VENTS AND RETURNED BACK TO BIL FOR TROUBLE SHOOTING ON THE AIRCRAFT. MX FOUND WIRE FOR NOSE BAG DOOR WARNING SHORTED AND DEACTIVATED CABIN HEATER CIRCUIT LIMITING RESISTER. WIRES WERE REPAIRED AND AIRCRAFT WAS RETURNED TO SERVICE.