Electrical connecting box for vehicle

An electrical connecting system comprising, in combination:

• a plurality of common units each having a built-in standard circuit common to plural kinds of vehicles;
• and
• a plurality of exclusive units having built-in exclusive circuits different from each other corresponding to the plural kinds of vehicles, the exclusive units including:
• a plurality of module plates each having a plate body, a plurality of wire accommodating grooves defined by a plurality of partition walls formed on the plate body and a plurality of wire connecting pieces arranged in the wire accommodating grooves on selection in accordance with a predetermined lay-out of a circuit to be established in the module plates, the wire connecting pieces being respectively connected with wires at respective ends thereof or respective intermediate parts of the wires;
• a plural kind of unit housings formed peculiarly to the plural kinds of vehicles respectively, for retaining a stack of module plates;
• and
• a plurality of inter-layer wiring members penetrating among respective layers forming the stack of module plates thereby to connect the wire connecting pieces in the module plates with each other, establishing a desired circuit as a whole;
• wherein one or more specified exclusive units are selected from the exclusive units and integrated with the common units thereby to complete the electrical connecting boxes peculiar to the specified kinds of vehicles.