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CURT 55774 Dual-Output Vehicle-Side 7-Pin, 4-Pin Connectors, Factory Tow Package and USCAR Socket Required, Black

4.4 4.4 out of 5 stars 2,741 ratings

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Purchase options and add-ons

  • VERSATILE DESIGN. This dual-output connector is a great upgrade for a variety of vehicles with a USCAR socket. It provides two standard trailer wiring sockets, a 4-way flat and an RV blade 7-way round socket, allowing for versatile towing options
  • WEATHER-RESISTANT. This two-way trailer wiring socket is designed to outlast weather exposure. The 7-pin socket has a spring-loaded dust cover that keeps the connection points dry and protected when not in use
  • RELIABLE CONNECTION. These trailer wiring sockets come ready to plug into existing vehicle wiring, using the factory USCAR socket. They connect the taillights, brake lights, turn signals, reverse lights, electric trailer brakes and aux power
  • USCAR-SPECIFIC. This trailer wiring harness socket is designed for specific vehicles with an industry-standard USCAR socket
  • DURABLE CONSTRUCTION. For long-lasting use and a reliable connection, the housing of this dual 7-pin and 4-pin trailer wiring socket is made from durable black plastic that will never rust or corrode
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Important information

Legal Disclaimer

The information provided is for general informational purposes only.


From the manufacturer

CURT Custom Trailer Wiring

Wherever your work or play takes you

CURT offers custom trailer hitches, electrical products and a complete line of towing accessories to get you there with confidence and enjoy every mile of the journey.

4 Pin Trailer Wiring Harness Connector

CURT Custom Vehicle-Trailer Wiring Harness

Custom fit. Plug-and-play. Reliable power.

A CURT custom trailer wiring harness is the easiest way to equip your vehicle with the proper electrical connection for towing a trailer. Our custom wiring offers simple, plug-and-play convenience with no cutting or splicing required, and provides a reliable connection for powering your trailer lights.

Best of all, each CURT custom trailer wiring harness is made vehicle-specific for a unique make and model. This makes installation hassle-free and ensures optimal performance with your vehicle.

Key features of CURT trailer wiring

  • Simple, plug-and-play installation
  • Constructed with SMT circuitry
  • Provides a standard trailer wiring output, usually 4-way or 5-way flat
  • Dust cover included to keep connector clean when not in use

Installation of CURT custom vehicle trailer wiring

CURT Trailer Wiring Connector Custom Vehicle Wiring

CURT Vehicle Trailer Wiring Installation

CURT Custom Trailer Wiring Installation Auto

CURT Vehicle Trailer Wiring Connector Plug In

Two types of trailer wiring

CURT offers two types of custom trailer wiring: custom wiring harnesses and custom wiring connectors. Both are made for specific vehicles, and both require zero cutting or splicing.

Custom trailer wiring harnesses

A custom trailer wiring harness (also known as a ‘T-connector’) is designed to ‘T’ into your vehicle’s taillight assembly. This simply requires access to the taillight wiring.

Custom trailer wiring connectors

A custom wiring connector uses a single plug to plug into a designated OEM socket on the vehicle. Not all vehicles are equipped with this socket, but it does make installing very easy.

Both vehicle-specific

Each custom trailer wiring harness and connector is made for a specific make and model, featuring the necessary components to provide a standard trailer wiring output.

CURT Towing Electrical Trailer Wiring Gooseneck Farm Truck

Selecting custom wiring

Whatever your lifestyle, choosing the right CURT custom trailer wiring harness for your vehicle is easy. Simply use your vehicle's year, make, model and style.

Benefits of CURT surface mount technology (SMT)

CURT Trailer Wiring Circuitry

CURT Trailer Wiring Lights

CURT Trailer Wiring Harness 7-Way RV Blade

Minimum heat generation

The high-quality components used in our custom trailer wiring create very little resistance to reduce heat, limit voltage drop and extend the life of the circuits.

Optimum light intensity

SMT is manufactured with automated processes for maximum consistency and the highly efficient circuitry promotes optimum intensity and life for the trailer light.

Durable performance

Surface mount technology is able to better withstand shaking and vibrations, conditions that are common while towing, compared to traditional through-hole-mount tech.

Product Description

A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and soldering when installing vehicle-to-trailer wiring. Most vehicles do not come ready to tow. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector. This is where CURT's custom wiring connectors come into play. A custom wiring connector uses a single original equipment plug to plug into a special socket provided by your vehicle. Though this option is not available on every vehicle, some automotive manufacturers design their vehicles to be easily equipped for towing by supplying a socket, integrated into the vehicle's electrical system, to readily accept a custom wiring connector. With a CURT custom wiring connector, there is no need to tap into the taillight assembly because a special socket is already provided. This special custom wiring connector actually provides two connector sockets for a multipurpose option. It plugs into an OEM connector and offers a 4-way flat and 7-way RV blade connector. It comes with a mounting bracket for easy installation and is designed to be a custom wiring option for a variety of vehicles (see application info to verify fitment). CURT custom wiring connectors are designed to be long-lasting and simple to install. They come with dust covers to keep your connector clean when not in use.

Product information

Technical Details

Additional Information

Warranty & Support

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CURT 55774 Dual-Output Vehicle-Side 7-Pin, 4-Pin Connectors, Factory Tow Package and USCAR Socket Required, Black


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What's in the box

  • Automotive Accessories;Electronics;vehicle-wiring-harnesses
  • Product guides and documents

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    Price$32.95$19.99$13.99$27.87-33% $36.92
    List:$54.79
    -20% $13.59
    List:$16.99
    Delivery
    Get it as soon as Thursday, Apr 4
    Get it as soon as Wednesday, Apr 3
    Get it as soon as Wednesday, Apr 3
    Get it as soon as Wednesday, Apr 3
    Get it as soon as Wednesday, Apr 3
    Get it as soon as Wednesday, Apr 3
    Customer Ratings
    Easy to install
    4.0
    4.5
    4.4
    4.8
    4.2
    Value for money
    3.9
    4.3
    4.2
    4.8
    4.3
    Durability
    3.8
    4.1
    3.7
    Sturdiness
    4.3
    3.7
    4.7
    Sold By
    Amazon.com
    lextrailer Inc
    MECMO
    Amazon.com
    Amazon.com
    Oyviny

    Looking for specific info?

    Customer reviews

    4.4 out of 5 stars
    4.4 out of 5
    2,741 global ratings

    Customers say

    Customers like the quality and ease of installation of the auto accessory. For example, they mention it works great, and it's easy to hook up trailers. That said, some complain about missing parts. Opinions are mixed on fit and appearance.

    AI-generated from the text of customer reviews

    119 customers mention98 positive21 negative

    Customers like the quality of the auto accessory. They say it works great, is a good tool, and is well worth the money. Customers also say the mounting bracket is sturdy and the connector works as expected.

    "...Fastened it to hitch frame easily. Mounting bracket is sturdy, everything is covered when not in use. Looks professional and is easy to access." Read more

    "...the day I’m giving this an overall rating of 4 stars because it is made well, but they short you 2 screws and also didn’t fit my truck as advertised...." Read more

    "This allows lights on a receiver mounted bike rack. Good tool." Read more

    "Bracket works great and room for the flat 4 connector as well." Read more

    88 customers mention76 positive12 negative

    Customers like the ease of installation of the auto accessory. They mention that it's easy to plug in, mount the receptacle where you want it, and done. It makes it easy to hook up trailers. Some appreciate the fact that it just plugs in to the factory trailer wiring harness.

    "Mounting hardware did not fit setup on truck. Fastened it to hitch frame easily. Mounting bracket is sturdy, everything is covered when not in use...." Read more

    "...As it turned out, the cameras on the vehicle made it extremely easy to hook up trailers so I started doing a lot of trailer work with my car..." Read more

    "This was also easy to install I mounted on the hitch before I installed the hitch. Then just plugged it into the factory wiring" Read more

    "Easy to install works as it should" Read more

    70 customers mention24 positive46 negative

    Customers have mixed opinions about the fit of the auto accessory. Some mention that it fits perfectly, while others say that it didn't fit. Some say that the bracket that holds the socket doesn't work properly, and the 7-way plug didn' t fit correctly. Some customers also mention that the unit door is not very tight, and it will let water in. Overall, the opinions are mixed, and depend on the individual customer's experience.

    "...because it is made well, but they short you 2 screws and also didn’t fit my truck as advertised...." Read more

    "fits well works well" Read more

    "...The harness is also much to short. To make it reach the rear bumper to mount, it would need to have atleast 4 more inches of wire." Read more

    "...In either case the bracket that holds the socket doesn't fit. I was going to mount it to the body so the socket was just above the hitch. No room...." Read more

    20 customers mention13 positive7 negative

    Customers have mixed opinions about the appearance of the auto accessory. Some mention that it looks good, while others say that it has a terrible design and is not waterproof. The bracket is cheap and flimsy, and the pins on the male portion that connects to your vehicle are cheap.

    "...Looks professional and is easy to access." Read more

    "...Structurally it’s fine but aesthetically looks horrible now." Read more

    "...It's secure and looks like it belongs. Very satisfied!" Read more

    "...Worked great, looks good, and easy install. 5 stars all day." Read more

    20 customers mention0 positive20 negative

    Customers are dissatisfied with the missing parts in the auto accessory. They mention that it didn't come with mounting hardware to attach the bracket to the vehicle. Some customers also mention that the parts bag was torn.

    "Mounting hardware did not fit setup on truck. Fastened it to hitch frame easily. Mounting bracket is sturdy, everything is covered when not in use...." Read more

    "...an overall rating of 4 stars because it is made well, but they short you 2 screws and also didn’t fit my truck as advertised...." Read more

    "What I need but missing parts to mount so it doesn't help me at all." Read more

    "...This kit does not come with mounting hardware to attach the bracket to the vehicle -- this kit is supposed to come with the 4 little nuts and bolts..." Read more

    Easy Peezy
    5 Stars
    Easy Peezy
    2010 Ford F-150. Person I bought truck from had backed into a post and mangled the trailer connector and bracket, see pics. After using dremel tool to remove old bracket, the new bracket supplied in the kit fits perfectly using self tapping screws. The new plug simply plugged into the factory connector, and tested 100%. Well worth the money.
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    Top reviews from the United States

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    Top reviews from other countries

    Amazon Customer
    5.0 out of 5 stars Perfect
    Reviewed in Canada on September 6, 2023
    Patrick Morris
    5.0 out of 5 stars Worked perfect
    Reviewed in Canada on July 14, 2023
    Blair Fraser
    4.0 out of 5 stars The leads for the four wire plug in are a bit short. About 4 inches longer would have been perfect.
    Reviewed in Canada on October 11, 2022
    One person found this helpful
    Report
    Serge Beaufort
    5.0 out of 5 stars Good parts
    Reviewed in Canada on June 13, 2023
    Curtis
    1.0 out of 5 stars Does not fit!
    Reviewed in Canada on January 9, 2023
    One person found this helpful
    Report