Patent ID: 7145299

Claim:
A power window control system comprising a master control box and a driving mechanism to open and close window glass by means of an electric motor which can be controlled by a master controller installed in said master controller box, wherein said master controller is provided in a driver's seat side and connected to a slave controller which is provided in an other seat side than said driver's seat side and which comprises a control circuit and relay circuitry to electrically switch on and off said motor, and wherein a single wire to which a dual-mode signal and a null signal are applied by said master controller is used for a linkage between said master controller and said slave controller, wherein said linkage works as an electrical wiring such that dual-mode signals and a null signal are applied to said single wire by a selective switching means installed in said master controller, and wherein said selective switching means comprises two serially connected mechanical switches that are inserted between a battery terminal and a ground line and wherein said single wire is electrically connected to a serially connected port disposed between and electrically connected to said two serially connected mechanical switches.