LOST POWER STEERING AT HIGHWAY SPEED DUE TO POWER STEERING PUMP FAILURE. SHORT CIRCUIT OR FIRE MELTED POWER STEERING PUMP WIRING HARNESS. DAMAGE WAS CAUSED TO OTHER PORTIONS OF ELECTRICAL WIRING HARNESS BY FIRE, RESULTING IN BLOWN FUSES. UPON REMOVING KEY FROM IGNITION AT ROADSIDE, ENGINE KEPT RUNNING UNTIL BATTERY WAS DISCONNECTED. *TT