Home › Image reading apparatus and image forming apparatus comprising a first wall, a second wall, a harness interposed between the first wall and second wall, a third wall, the harness not interposed between the first wall and third wall, and a plurality of fourth walls spaced apart from each other extending in an orthogonal direction orthogonal to the first direction in which the first wall and the third wall extend and protruding upward from the bottom of the harness accommodating portion