This oddball sequential unit was only used from 2/1/1971 to 5/15/1971 and will be of no interest except for to select few. The differentiating factor is the hard plastic connectors. We can supply a reproduction of this unit but it requires that you send your old unit to to us so we can reuse the plugs.
Ford part # D1WY-13A366-C.
1971 Cougars built from 2/1/71 to 5/15/71 used a unique sequential system in the trunk, D1WY-13A366-C. It uses two connectors, grey and light blue, that are no longer serviced. When the sequential system must be serviced, it can be replaced by an NOS unit, or a replacement unit, such as the C9WY-13A366-AL sequencer shown below. Since these unique connectors are no longer available, the connector plugs on the tail light harness must be replaced with the more typical red and black plugs. The C9WY-13H366-AR harness connector repair kit provides these plugs along with about 12” of wire for splicing. Installation requires cutting off the old grey connectors and splicing on the new red/black connectors while matching up the wire color codes. Slide heat shrink tubing over each wire and solder (no butt splices) each connection. Wrap the bundle with electrical tape to protect the connections. Remove the old sequential system board from the black case, install a new C9WY-13A366-AL sequential system board and plug into the harness. Replace the turn signal flasher can with a D0WY-13A366-AR when using 1157 bulbs or a D0WY-13A366-L flasher when using LED bulbs. Remember to test both the turn signals and brake lights prior to driving the car.
*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.
Here is our little video to show some of the things to look for when buying a classic Cougar.