A wiring harness includes a first power transmission path; a second power transmission path; a connecting part; and a connector. The first power transmission path has stiffness ensuring autonomously retention of its shape, the shape coinciding with an arrangement path. The second power transmission paths have stiffness smaller than that of the first power transmission path and also have flexibility. The connecting part includes a connection structure configured to connect conductive ends of the first power transmission path and the second power transmission paths to each other with the conductive ends being electrically insulated from outside.