What was found
PILOT REPORTED HIGH OIL TEMP WITH CONTINOUS RISING ON NR 1 ENGINE. MADE A PRECAUTIONARY LANDING. ON APPROACH NOTICED THE OIL PRESSURE WAS ALSO HIGH ON NR 1 ENGINE. TROUBLESHOT & FOUND MOISTURE (OIL AND WATER) IN THE MAIN ENGINE ELECTRICAL DISCONNECT CONNECTOR AT THE FWD FIREWALL AND ALSO FOUND A WIRE AT THE BACK OF THE OIL PRESSURE TRANSMITTER FRAYED. CLEANED CONNECTOR AND REPAIRED FRAYED WIRE, PERFORMED A GROUND RUN AND CHECK FLIGHT WITH NO FURTHER HIGH PRESSURE OR TEMP INDICATIONS. RELEASED THE ACFT FOR RETURN TO SERVICE.