What was found
TEN MINUTES AFTER DEPARTURE FROM PHOG CFI, NOTICED SMOKE COMING FROM CONSOLE. MASTER WAS SWITCHED OFF BUT AFTER A PRECAUTIONARY LANDING IN FIELD, MECHANIC FOUND OVER 20 WIRES WITH MELTED INSULATION FROM VARIOUS LOCATIONS FROM THE UPPER CONSOLE THROUGH-WIRE LOOM TO ELECT COMPONENTS. SEVERAL COMPONENTS WERE SHORTED AND DAMAGED. APPARENTLY A DIODE ON BATTERY SOLENOID SHORTED CAUSING HIGH CURRENT FLOW THROUGH MASTER SWITCH WIRE WHICH HEATED HARNESS BUNDLE AND OTHER COMPONENTS. SUBMITTER RECOMMENDED INSTALLING CIRCUIT PROTECTION TO MASTER SWITCH.