Used and tested sequential unit for the taillights of the late 70 - 73 Mercury Cougar. This unit will come with a 90 day warranty. Keep in mind that if you want to use the brighter LED's on your car, this original sequential system will not work. If you want to change over to LED, you will need the updated sequential unit which you can find here.
If you need the sequential enclosure box, you find our used boxes here.
Ford part # D1WY-13A366-A.
*NOTE* Need help diagnosing a Cougar turn signal problem? Victor Yarberry is the world's most knowledgeable expert on the subject. Vic has owned Cougars since the 1970's and is the designer of all of our solid state sequential systems. There is no question he cannot answer! Here is a link to a great source of information on the subject.