Wire Harness, Component Module for Wire Harness, and Vehicle Component

A wire harness () includes some control boxes (-) dispersedly arranged on the wire harness; a trunk harness (-) connecting one of the control boxes to another of the control boxes; and a branch harness () connecting the control boxes to the electric components (-). The control boxes (-) are configured to be able to multiplex and demultiplex the communication signals. The trunk harness (-) has a common internal wire structure without relating to the control boxes where the trunk harness is connected. At least one of the control boxes () is integrated with a functional component () to be a component module (). The functional component () is configured to be able to input and output information relating to at least one of the electric components.