Abstract: A vehicle display device includes a display panel having a light emitting device. The display device further includes a display panel cover coupled to the display panel. The display panel cover has a translucent indicium that corresponds to the light emitting device. A signal transmitting device is provided on the display panel cover for sending a signal corresponding to the indicium on the display panel cover. The display device also has a signal receiving device capable of receiving a signal transmitted by the signal transmitting device and sending the signal to a control module. The control module is adapted to selectively operate the light emitting device according to the signal transmitted by the signal transmitting device.

Abstract: A method of charging a compressed air storage tank for a vehicle increases the pressure in the storage tank from a first pressure to a second pressure. The method includes determining the first pressure according to a first detected vehicle engine load, and starting the charge cycle when the pressure detected in the storage tank is at least as low as the first pressure. The method further includes determining the second pressure according to a second detected vehicle engine load, and stopping the charge cycle when the pressure detected in the storage tank is at least as high as the second pressure.