to a beam in the garage frame.the end of the extension spring is attached to a pulley the other end of the extension spring connects to a pulley with a pulley fork.a pulley typically attaches to the other end of the extension spring with the help of a pulley fork. one end of the cable that goes over this pulley is attached to a cable adjustment clip. an s-hook attaches to this clip, as well as to the horizontal track. the other end of this cable rolls over a second pulley and down to the bottom fixture on the bottom section of the garage door.cable on extension spring attaches to 