An implement mounting assembly is mountable to a vehicle after having been positioned using a retractable cable. The implement mounting assembly has a frame defining a cable routing space, an attachment point to which the cable is attachable, and an auto-release cable management assembly including a hook, first and second underside guide surfaces for guiding the cable towards the hook as the cable retracts, and a gate. The gate is positioned with respect to the hook to be movable between open and closed positions in which the hook is accessible and inaccessible to the cable. The gate is biased towards the closed position. When a tension in the cable is above a threshold tension, the gate moves into the open position and the cable accesses the hook, and when the tension decreases to below the threshold tension, the gate moves towards the closed position releasing the cable from the hook.