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A design scheme for the body electrical system of a pan-electronic vehicle system is put forward with a two-level network (backbone network and local area network) as digital signal network, the vehicle power network as power source and the central coordination control unit for vehicle coordination control. The electrical equipment interconnection, the light and heavy current supply and the wire harness simplification are realized respectively by backbone network / local area network, distributed power network and standardized appliance interfaces. Thus an intelligent and standardized electrical system with high consistency, good expandability and high reliability is constructed. Finally a prototype vehicle is developed to verify the feasibility of the system. [ABSTRACT FROM AUTHOR]