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Headlight Relay Kit - Full Kit - NEW ~ 1967 - 1968 Mercury Cougar / 1967 - 1968 Ford Mustang

Item #: 10499
Cost: 15200
Earns: 760
Bonus: 0

No cutting headlight relay kit converts the 1967-68 Mercury Cougars with quad or 4 headlights to modern car technology.


Price: $190.00
    Options / Optional Addons
    Item # Description/Size Availability Qty Break Price Quantity
    10064
    High Beam Headlamp - H5001 - with FoMoCo Logo
    In-Stock Item 1 $46.10
    10065
    High / Low Beam Headlamp - H5006 - with FoMoCo Logo
    Ships Direct from Supplier (Except International) 1 $47.44
    Total:
    $0.00
    The product is in stock Availability*: Out of Stock
    Usually leaves warehouse: Unknown
    Out of Stock Quantity: 0
    Out of Stock - Ships in: Unknown

    Headlight relay kit converts the 1967-68 Mercury Cougars with quad or 4 headlights to modern car technology (kit also works on 1967-68 Mustang 2 headlight systems). If your Cougar suffers from dim headlights you are not getting a full battery power to the back of your headlamp bulbs. Safe for use on our vintage cars. Still uses your headlight switch. Instead of carrying reduced voltage to the headlights through the switch, the switch triggers the relay, which takes power directly from the battery. This relay Kit can handle the higher wattage bulbs (up to 100W) which is used outside of the USA. Included in kit: Two weatherproof controllers, one 40A auto-reset circuit breaker, power wire, crimp-on connectors and easy to follow instructions.

    Benefits:

    • Easy to install, and no cutting. Plug in the controllers, run a power feed and you're done. 
    • Redundancy. Each headlight - High, Low, Left, Right has it's own relay and each side has it's own controller. 
    • Each 40/60 Amp 12 Volt sealed relay has Negative Spike Protection built in. This means no spikes or feedback to upset delicate electronics. 
    • Each controller contains an internal auto resetting circuit breaker to isolate left and right sides. 
    • If a controller goes bad, the other controller will continue to power the other side. 
    • The single feed wire is easily hidden and the controllers can be removed for car shows if desired. 
    • Compact size - each controller is only 3"x2"x1.5". 
    • Kit comes with a 40A auto resetting circuit breaker to power up to 4 halogen lamps at 10A each. 

    Note: It is the responsibility of the purchaser to ensure that the headlight wiring is sufficient to carry the amperage required by the installed lamps.

    Shipping Weight:
    0.70 LBS
    (weight shown may be the dimensional weight)
    Shipping Dimensions:
    Number of questions: 2
    0 0
    Is this relay kit still available? There does not appear to be a price listed or the ability to add it to the cart.
    November 13, 2025 12:40 AM
    Answers
    0 0
    Thank you for letting me know. There was a setting incorrectly set. Should be fixed now.
    WCCC Admin November 13, 2025 12:54 AM
    0 0
    I'm looking at the Halogen Headlight Conversion kit. The kit appears to have a single relay vs the two relays in this kit. Is there a reason?
    April 23, 2022 9:34 PM
    Answers
    0 0

    It all comes down to what wattage of bulbs the systems can handle.

    Per the product description:

    This relay kit can handle the higher wattage bulbs (up to 100W) which are used outside of the USA.

    The Halogen Headlight Conversion kit (ITEM #: 30086) comes with the 'mini' relay system which is designed to handle around 200 watts total split between the 4 blubs, whereas this listing is for the 'full' relay system which can handle up to (4) 100 watt bulbs or 400 watts total.

    WCCC Admin April 25, 2022 8:52 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:

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