Small junction box for connecting a wire harness

Claim 1

A small junction box in combination with a wire harness of an automobile, the automobile including an engine control circuit which is electrically connected to a connector plug, said small junction box comprising a power receptacle, a power supply connector, at least one fuse socket and at least one optional connecting socket, which are electrically connected with each other through a plurality of bus bars, characterized in that said small junction box is detachably connected to a power receptacle of another junction box body through said power supply connector, wherein said power receptacle of said small junction box has substantially the same configuration of a recess and connecting pins as the power receptacle of the junction box body which receives said small junction box, such that said power receptacle of said small junction box receives the connector plug which normally is inserted into the power receptacle of the junction box body, wherein said bus bars are connected to connecting pins in said power receptacle and said optional socket, and to relay terminals in said power supply connector and said fuse socket, and further wherein said power receptacle of said small junction box is operative to connect to the engine control circuit by engagement with the connector plug.