To provide a cable harness assembly being installed simply.

This cable harness assembly 100a is provided with a hose hanger 1a, a hanger stopper 2a, and a stopper bush 3a. The hose hanger 1a has a main body 12 and a cable part 16, and the main body 12 has a first shaft hole 14 and a first outer width. The hanger stopper 2a has a second shaft hole 22, a second outer width, and a stop member 24. The stopper bush 3a has a third shaft hole 32 and a third outer width having size equal to that of the second outer width in a free condition and is formed by a material extensible in the radial direction. When a hanger fixing bolt 4 is tightened in the second shaft hole 22, the hose hanger 1a and the hanger stopper 2a are pressed against the stopper bush 3a, thereby increasing the third outer width of the stopper bush 3a.