Abstract: It is an object of the present invention, with regard to a wire harness for being attached together with a sheet-like cover member to a door panel of a vehicle, to realize a simplification and reduction in the number of steps of the installation work and moreover to decrease the weight and cost of the wire harness. A wire harness comprises an electric wire and a sheet-like service hole cover having elasticity for being attached to the inside of the door panel of a vehicle. The electric wire includes an inside wiring section, which extends along a first surface of the service hole cover, and an outside wiring section, which is fed through to a second-surface side, the electric wire being united with the service hole cover in the inside wiring section.