Put in clips first, (flanges on the top and bottom), Then put in white plugs and force in to expand and lock clips. Don't forget metal clips on door (2 is fine) and 1 each fore and aft. Then position top of aluminum bars onto top of clip, then bop the aluminum bar down so it slips over the lower flange of the clip. You should feel the click.
Mike Mizesko
Columbus, OH