the touch switch 22 includes a touch panel 27 and a backlight 28 and outputs to the control unit 24 an operation detection signal that represents either of an in contact condition or an out of contact condition of the touching finger of the user with the touch panel 27 the touch panel 27 also outputs contact position coordinates of the touching finger to the control unit 24 when the touching finger is touching the touch panel 27 the touch switch 22 lights itself by the backlight 28 according to a lamp control signal upon having an input of the lamp control signal from the control unit 24 a steering wheel 29 for steering the vehicle has an operation detection sensor 30 for detecting an in contact condition and an out of contact condition of the touching finger with the steering wheel 29 the operation detection sensor 30 outputs an operation detection signal that represents respective contact conditions of the touching finger of the user with the steering wheel 29 to the control unit 24 the control unit 24 executes a steering operation detection module a touch panel operation detection module and a lamp control module beside executing other modules described in the first embodiment the control unit 24 determines whether the touching finger of the user is in the in contact or the out of contact condition with the steering wheel 29 by executing the steering operation detection module for analyzing the operation detection signal from the operation detection sensor 30 and also determines whether the.