As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE PILOT REPORTED AN ELECTRICAL FAILURE WITH LOSS OF GPS1 , TRANSPONDER, AND HSI INDICATION. THE MECHANIC INSPECTED THE AIRCRAFT AND FOUND A BROKEN WIRE THAT FEEDS THE K5 RELAY DIRECT BATTERY CIRCUIT. REPLACED THE BROKEN TERMINAL. SYSTEM OPERATIONAL CHECK GOOD. AIRCRAFT WAS SUBSEQUENTLY RETURNED TO SERVICE.