A wire harness unit including a wire bundle. The wire bundle is axially fixed to a clamp tab at a location between first and second ends. Formed in the wire bundle between the clamp tab and a connector is a bight portion. A first part of the wire bundle, on one side of the bight, is fixedly secured to a second part of the wire bundle, on the other side of the bight, by a fastener extending from the first part to the second part. The first part of the wire bundle is supported by the second part of the wire bundle such that the first part of the wire bundle is held substantially parallel to the second part of the wire bundle and such that an intermediate portion is substantially prevented from sagging.