Wiring structure of flat circuit for vehicle

摘要

A first flat circuitry is provided with a standard circuit for connecting a standard electric appliance to be mounted on a door trim and an electric appliance on a door panel via a wire harness connector. A second flat circuitry is separately provided with an optional circuit for connecting an optional electric appliance to be mounted on the door trim and the electric appliance on the door panel side via the connector. A casing of a main switch unit, one of the standard electric appliances is provided with a mounting section having a connector fitting part to be fitted with the connector, which exposed conductor parts of the plurality of the circuitries and terminals of the connector connected at the connector fitting part.