The side lights are switched on when the ring nut on the steering column is turned to the first position, with the ignition in the ON position.They can also be turned on by extracting the key and turning it in the opposite direction - PARK position - keeping the special button pressed.Turning on the side lights also turns on the number plate lights and numerous other interior lights for passenger compartment lighting and instrument & control lighting (these lines are described and illustrated in the diagrams for the components to which they refer).The side lights switch is protected by fuses in the engine bay junction unit and in the junction unit under the faciaA warning light in the instrument panel indicates that the side lights have been switched on.