Abstract: Harness assembly apparatus for maintaining close grouping of a plurality of flexible elongate objects such as wires as the objects make a turn and are formed into a bundle. The apparatus includes retaining means for releasably holding the objects and further includes support means to be mounted on a panelboard or the like and supporting the retaining means. The retaining means includes generally rigid abutment means which engages the bundle and defines the turn therein, and an arm captively held by the support means. The arm is movable relative to the support means between a retaining position wherein it is disposed above the abutment means and extends at least partially outside the turn and a release position wherein the arm is disposed substantially inside the turn of the bundle. At least a portion of the abutment means is responsive to movement of the arm towards its release position to move away from the turn of the bundle as defined by the abutment means when the arm is in its retaining position.