Device comprising a vehicle and a wire harness

There is provided a wire harness which can improve the workability, stability, durability and safety. The wire harness 21 includes a plurality of high-voltage electric wires 22 connecting an inverter 4 and the battery 5, a protection member 23 protecting the plurality of high-voltage electric wires 22, and a fixation member 24 for a fixation with respect to a vehicle. The wire harness 21 is arranged to extend from a front portion inside vehicle 6 through a vehicle under-floor 10 to a rear portion inside vehicle 7. The protection member 23 includes an in-vehicle protection member 26, 27 and an under-floor protection member 28. The under-floor protection member 28 is a flat-shaped tube having a non-circular cross-sectional shape, is made of insulating synthetic resin and is formed into a concertina-shape having independent, circumferential projection portion and recess portion arranged alternatively in a continuous manner.