The invention provides a harness capable of effectively dissipating heat generated from a thermal component. A cable is long in service lifetime of bending and disconnection, low in weight and is easily bent. The harness includes the cable (1) having a braid shielding layer (4), and a terminal component (10) including a heat generating part (11) disposed at least one end of the cable. The braid shield layer (4) includes braided rectangular element wires (4a) each having a rectangular cross section. The terminal component (10) includes a caulking ring (13) to caulk and fix the braid shielding layer (4) and to be fixed to a housing of the terminal component, and a heat collection metal pipe (14) thermally connected to the caulking ring (13) and extended to a vicinity of the heat generating part (14).