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  • Solid State - Taillight Sequential Unit - for STANDARD / PLASMA LED BULBS - Repro ~ 1969 - 1973 Mercury Cougar / 1969 - 1973 Shelby Mustang  - 12135
  • Solid State - Taillight Sequential Unit - for STANDARD / PLASMA LED BULBS - Repro ~ 1969 - 1973 Mercury Cougar / 1969 - 1973 Shelby Mustang  - 12135
  • Solid State - Taillight Sequential Unit - for STANDARD / PLASMA LED BULBS - Repro ~ 1969 - 1973 Mercury Cougar / 1969 - 1973 Shelby Mustang  - 12135
  • Solid State - Taillight Sequential Unit - for STANDARD / PLASMA LED BULBS - Repro ~ 1969 - 1973 Mercury Cougar / 1969 - 1973 Shelby Mustang  - 12135

Item #: 12135

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Price: $176.75
    Cost: 14140
    Earns: 707
    Bonus: 0

    Availability

    In-Stock Item - Next Business Day

    Applications

    Description

    This new version sequential box works with either standard or plasma LED bulbs

    NOTE: Although your existing emergency flasher might work just fine with the new sequential unit, it is highly recommended that you also use the same updated electronic sequential flasher in its place to guarantee proper operation.

    This is a direct fit replacement, just pop open your black plastic box located in the driver side trunk drop off and plug it in. Your January 1970 and newer Cougar will have external brake light relays taped to the outside of your box, this unit will internalize them with built in solid state units that are silent and much more reliable.

    This unit is located in the trunk behind the driver side wheel house and requires no modification to the original wiring. The two used sequential units shown represent the two versions this new unit was designed to replace. The unit without the external brake light relays was used in 1969 and early 1970. The unit with the four bulky external brake light relays was used from January 1970 to 1973. Note both versions use the same plug configuration. We highly recommend you change the flasher under the dash with our updated unit.

    Dear WCCC, I would like to thank you for having such a great product. It was incredibly simple to install. It has been years and years since the blinkers on my 1973 Cougar have worked properly. Most everyone I talked to about it, didn't want to have anything to do with it. Within the few minutes it took to install your product, I can finally drive my car again without having to worry about a thing. Thanks again!!!!

    *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.



    For more info on the "Plasma" LED's, check out our comparison video:



    1969-1973 Cougar owners: This is one of the components that you'll need in order to use our Plasma LED taillight bulbs in your car with the sequential turn signal system.

    Specifications:
    Shipping Weight: 1.00 LBS
    (weight shown may be the dimensional weight)

    This item must ship via

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    4.90 out of 5 stars
    Based upon 28 Review(s).
    5 Stars
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    Brazil

    4.75 out of 5
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    Pros:
    • Good quality
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    Very good quality.
    Easy to install and is very good to see the sequencial turning signal working again!

    AUSTRALIA,South Australia
    2020

    Great item!

    5.00 out of 5
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    Great item, Easy install. Needed to fit LED lights and well worth the money! Thanks WCCC!

    AUSTRALIA,South Australia
    2020

    Great item!

    5.00 out of 5
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    Great item, Easy install. Needed to fit LED lights and well worth the money! Thanks WCCC!

    South Carolina
    2013

    5.00 out of 5
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    Love this conversion! Now i feel confident that my signals will be seen as i was always having intermittent failures before

    MA
    2018

    What a difference!

    5.00 out of 5
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    I put this unit in my 1970 Shelby along with the flasher and plasma bulbs and all I can say is...WOW! I don't have to worry about other drivers not seeing my directional or brake lights. Very easy to install and I would highly recommend it.

    Number of questions: 0
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    Why am I being warned about potential exposure to chemicals in motor vehicle parts?


    • Some chemicals in motor vehicle parts are on the Proposition 65 list because they can cause cancer and/or birth defects or other reproductive harm.
    • When purchasing USED or NOS items, we do not know if listed chemicals are present in these products.
    • This product is known to contain the following listed chemicals:
    I was having difficulty placing my order on the website and spent a couple of hours trying with no luck (ending in immense frustration). I decided to finally just call and order my parts over the phone (4 small items). Was surprised that Don Rush...
    - Tim (1969 Cougar XR7)
    Brake booster failed on our 1970 Mach1. We had ordered a new 2022 Mach1 to match the old one and the dealer wanted to use both cars in a promotional ad. When we received the replacement booster it failed within a few minutes of installation. I...
    - Alan
    WCCC makes finding the right part with the right fit easy. I love that they try to get great parts and when there are parts that don't meet their standard they WARN you up front! I've bought new reproduction parts from them, used parts and even had...
    - Daniel
    You all have everything... even when I think it would be hard to find. Used, repro, all of it. Thank you all for the all the help since 2020, when I bought my dream XR-7.You all ROCK! Thanks WCCC! Wear my shirt proudly, for sure.Thanks again for...
    - Eric (North Carolina)
    For five years I've been buying parts for my car from WCCC. For five years I've gotten free advice, research, techniques, and demonstrations that have helped me put the car together correctly. I would never have figured out some of the things I...
    - Dan
    Today I was contact by Darrel on his day off to fix a problem that occurred with an order. I can not express enough how thoroughly pleased I was with his service, and that of Don Rush, for making it happen. I would recommend WCCC to anyone that...
    - Jerry
    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...
    - Gary
    The LED PLASMA WHITE lightbulbs are super bright and greatly enhance the visibility (and safety) of my backup lights. A great addition to my already RED PLASMA BRAKE LIGHTS ...
    - Jim Kemp
    I have been dealing with Don [at WCCC] a very long time, he knows what he's talking about and knows his Cougars! ...
    - Dennys automotive
    From the clarity of the website to the quality of the products, WCCC is a fantastic company to deal with. ...
    - Kim
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