A wire harness has a joint connector having a joint terminal and a connector housing. The joint terminal has a short-circuit section and a plurality of electrical contact portions aligned in a direction substantially orthogonal to an axial direction of wires. The connector housing has an external wall surrounding terminal chambers and exposed to the outside; and a plurality of terminal locking tabs formed integrally with the external wall the terminal locking tabs locking wire terminals. Each of the terminal locking tabs has a shape deflectable between an engaging position that locks each wire terminal and a disengaging position. The joint connector is fixed to the peripheral surface of a wire harness main body while the outer surface of the external wall of the connector housing faces and contacts the peripheral surface of the wire harness main body the connector housing being provided with the terminal locking tabs.