This is a recondition 12V. direct bolt-on replacement relay for 1955-60 Thunderbird seat-window motors. will work with all 4 wire motors. Will fit other FORD models. ( 6 month limited warranty ) Will work for up-down or forward-back motors. If you would like to view all our Thunderbird, Lincoln products click on ( SEE OTHER ITEMS ) in the right hand of our ad. If I can be of any further help please contact me. Thanks Jim.