Skip to main content
Welcome to the NEW WCCC Cougar Parts Catalog
(Click here to tell us what you think)
Our warehouse is closed for New Years Jan 1-4th.
Orders placed after 12PM PST on Tuesday 12/30/2025 may not ship until Monday (1/5/2026).
International Customers Click Here [Updated 6/2025]
true
20 Review(s)

Turn Signal Flasher Unit - Electronic Sequential - for PLASMA LED BULBS - Repro ~ 1969 - 1973 Mercury Cougar

Item #: 12827
Cost: 4232
Earns: 212
Bonus: 0

Updated Electronic Flasher for the 1969 - 1973 Mercury Cougar with sequential Plasma tail lights.

Designed for Cougar but will work in many other applications using similar flasher units.

Price: $52.90
    The product is in stock Availability*: In-Stock Item
    Usually leaves warehouse: Next Business Day
    In-Stock Item Quantity: 29
    In-Stock Item - Ships in: Next Business Day

    When your lights are sequencing too rapidly, causing the outer light to not fully illuminate, your original unit is most likely the culprit. This solid state unit replaces the small red (69-70) or green (71-73) flasher found under the dash, next to the radio.

    NOTE* Some vehicles have the wiring reversed, you can get though this problem by using spades and hooking up to the contacts of the flasher backwards. 

    This is the updated flasher unit for use with the updated sequential unit and Plasma Led's.

    Replaces Ford part # D0WY-13350-A or D0WY-13350-C when using LED turn signal bulbs.

    *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.

    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.

    Shipping Weight:
    0.20 LBS
    (weight shown may be the dimensional weight)
    Shipping Dimensions:
    Number of questions: 2
    0 0
    Is the black lead an earth?
    September 21, 2025 1:16 PM
    Answers
    0 0
    Yes it is
    WCCC Support Staff (Junior) September 22, 2025 7:21 PM
    0 0
    Can this be used with standard bulbs also?
    August 9, 2023 10:18 AM
    Answers
    0 0

    For standard bulbs you need this unit: ITEM #: 26697

    WCCC Admin August 9, 2023 7:34 PM

    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:

    Help Improve this Product Listing

    I know it is hard to believe, but sometimes we make mistakes.
    Other times customers have more knowledge about a particular product than we do.
    Again, hard to believe, I know, but it is true.

    We greatly appreciate when customers want to help us make our site better.
    Because of this, we have developed a way for you to easily send suggestioned improvements to us.

    Help us improve this product