Rear Suspension: Link-Watts: Operation
WARNING: This page is about a different car, the 2006 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
The watts link assembly serves the same purpose as a track bar. That is, it is used to control rear axle lateral movement and provides cross-car location of the axle. Unlike a track bar, the watts link assembly offers more consistent handling and stability at varying suspension heights, either lightly loaded or fully laden. As the suspension lowers or raises, the watts link assembly compensates by rotating the bell crank in the desired direction. This rotation simulates shortening or lengthening of the links. Since there is one link on each side, the change affects each side of the suspension evenly.