WIRING HARNESS UNIT AND WIRING HARNESS MOUNTING STRUCTURE

A technology disclosed in the present specification is a wire harness unit attached to a case the wire harness unit being configured to comprise: a wire harness in which a plurality of coated wires are fixed to a sheet-like base substrate a pair of clamping parts that clamp and hold a marginal portion different from a portion to which the plurality of coated wires are fixed in the base substrate and a protector that has a fitting part which is fitted, in the right-left direction, to a part-to-be-fitted provided to the case and locks with the part-to-be-fitted in the front-rear direction.