A is wound around a drum of a winch mounted on a pressure bar which is placed on a child car seat after it is positioned where it is to be installed, usually on the rear passenger seat of an automobile. Fasteners at the ends of the belts are attached to a respective seat belt on each side of the child car seat, or to an anchoring rod extending from underneath the automobile. As the winch is actuated to tighten the belt the child car seat is pressed into the passenger seat where it can be firmly held in place while an installer tightens a pair of passenger seat belts passed through the child car seat to hold it securely in place.