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  • Taillight Sequential Unit - Reman ~ 1971 Mercury Cougar - 41474
  • Taillight Sequential Unit - Reman ~ 1971 Mercury Cougar - 41474
  • Taillight Sequential Unit - Reman ~ 1971 Mercury Cougar - 41474

Item #: 41474

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Price: $219.87
    Cost: 17590
    Earns: 880
    Bonus: 0


    In-Stock Item - Next Business Day



    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.

    Shipping Weight: 2.00 LBS
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    I have used West Coast Cougar twice to have parts for my 1971 XR-7 Convertible shipped to Australia. Cannot fault their service and communication. Am definitely a fan. Website is also very comprehensive, they deserve 5 stars. Cheers from The Land...
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    I have been dealing with Don [at WCCC] a very long time, he knows what he's talking about and knows his Cougars! ...
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    From the clarity of the website to the quality of the products, WCCC is a fantastic company to deal with. ...
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    - Jim ONeil
    I may be slow in leaving feedback on the items I have purchased each time, but I want all to know that I am very pleased with the items and customer support with everything WCCC is simply the best of the best!! I thank you and "Janice" my 67 thanks...
    - Michael
    Purchased a set of wire wheel covers for our 68 Cougar to complete the option content as show in our Marti report. Was pleased at the condition of three caps that Don sold me. Had to return one due to some curb rash and the Westcoast folks gladly...
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    My 1973 Cougar exhaust manifold was cracked. West Coast Classic Cougar agreed to notify me when a used drivers side exhaust manifold was available, which they did. I purchased the manifold and I received it 2 days later. Manifold looks good, fit...
    - Mike
    Have not installed the parts yet but they look a good quality. The top cat glasses are pretty cool! I called a while back because I had a question, they called me back the next day. I appreciated that the more I buy, the more I will know about this...
    - Opeldidit
    Purchased the cooling system package for the 289 V8. Has the 24" radiator, big block fan, fan clutch, and shroud. All parts fit as expected and the "how to" YouTube video was a big help. ...
    - ipswichbill