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.