What was found
OIL TEMPERATURE GUAGE (ROCHESTER SERVICE KIT) FAILED CAUSEING OVER VOLTAGE PROBLEM THROUGH-OUT. SHORTING OUT ALTERNATOR, VOLTAGE REGULATOR, OVER VOLTAGE SENSOR, ENTIRE RADIO STACK, LIGHTING, ELECTRIC SERVICE KIT OIL TEMP WAS REMOVED AND REPLACED WITH ORIGINAL CAPILLARY STYLE TEMP PROBE AND REPLACEMENT OF ELECTRICAL COMPONENTS CARRIED OUT AS THIS WAS THE 3 GUAGE FAILED IN THE AIRCRAFT AND MANUFACTURE WAS NO SUPPORT FOR THIS UNIT.