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CURT 55384 Replacement Vehicle-Side Custom USCAR 4-Pin Trailer Wiring Harness, Black, 6 x 3 x 9 inches

4.6 4.6 out of 5 stars 3,896 ratings

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Purchase options and add-ons

Brand CURT
Material Rubber
Item Dimensions LxWxH 6 x 3 x 9 inches
Item Weight 0.71 Pounds

About this item

  • NOTE: Vehicle must already be equipped with USCAR
  • EASY TO INSTALL. No cutting No splicing This trailer wiring harness Ts into an existing USCAR connection on your vehicle and equips it with a standard 4-pin trailer wiring connector for plugging in and towing a trailer
  • STANDARD CONNECTOR. The 4-flat trailer wiring can be used to connect trailer taillights, brake lights and turn signals. 4-way trailer wiring is popular on a wide variety of trailers, adding versatile towing options for your vehicle
  • USCAR-SPECIFIC. This USCAR wiring harness is designed for select vehicles with a standard USCAR socket, ensuring the easiest possible installation and the most reliable wiring connection
  • EASY GRIP. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of this vehicle socket. It features a tab on top for a better grip when plugging into your trailer or unplugging
  • DURABLE CONSTRUCTION. For long-lasting use and a reliable connection, the housing of the 4-pin vehicle wiring socket is made from durable black molded rubber that will never rust or corrode
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CURT 55384 Replacement Vehicle-Side Custom USCAR 4-Pin Trailer Wiring Harness, Black, 6 x 3 x 9 inches
CURT 55384 Replacement Vehicle-Side Custom USCAR 4-Pin Trailer Wiring Harness, Black, 6 x 3 x 9 inches
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Price$22.97$27.98-47% $2.10
List:$3.95
$56.99-12% $21.99
List:$24.99
$56.99
Delivery
Get it as soon as Wednesday, Mar 13
Get it as soon as Wednesday, Mar 13
Get it as soon as Wednesday, Mar 13
Get it as soon as Wednesday, Mar 13
Get it as soon as Wednesday, Mar 13
Customer Ratings
Easy to install
4.7
4.7
4.7
4.8
4.3
5.0
Value for money
4.6
4.6
4.7
4.5
4.3
3.8
Easy to use
4.5
5.0
4.7
4.6
4.4
Instruction quality
4.6
4.5
3.9
Sold By
SZen Home
BSOC AUTO
Amazon.com
Oyviny
Oyviny
MECMO
cable length
9 inches inches
7 feet feet
12 inches inches
7 feet feet
material
Rubber
Brass
Rubber
ABS
Copper
Plastic

Important information

Legal Disclaimer

Is new but no package.

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Top Brand: CURT

Highly Rated
4.6/5 star rating from 100K+ customer ratings
Trending
100K+ orders for this brand in past 3 months
Low Returns
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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

Stress is the last thing you should feel when towing a trailer -- whether you're hauling your RV to that favorite camping destination, your ATVs up to the hunting grounds or your fishing boat to the new hidden hotspot. At CURT, we think your towing equipment should add to the enjoyment of your experience, not detract from it. CURT custom wiring connectors are the easiest way to outfit your vehicle with a CURT trailer wiring connection. They are built with some of the most advanced technology in the industry, and each one is custom-fitted to work with a specific make and model. Some automotive manufacturers install a special socket on the vehicle to be used for vehicle-to-trailer wiring. Though this special socket is not equipped on every vehicle, a CURT custom wiring connector (also called a T-connector) utilizes the socket for simple, stress-free installation. Rather than requiring you to cut, splice and solder into your vehicle's wiring system, the custom wiring connector uses a single OEM-compatible plug and instantly provides a standard vehicle-to-trailer wiring connection, typically in the form a 4-way flat. All CURT custom wiring connectors are made vehicle-specific for the easiest possible installation and the best fit. This particular connector provides a 4-way flat socket while retaining use of the existing OEM socket. It is designed to be a custom wiring option for a variety of vehicles (see application info to verify fitment with your vehicle). It comes with a dust cover to keep the connector socket clean when not in use.

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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CURT 55384 Replacement Vehicle-Side Custom USCAR 4-Pin Trailer Wiring Harness, Black, 6 x 3 x 9 inches


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What's in the box

  • Custom Wiring
  • Looking for specific info?

    Customer reviews

    4.6 out of 5 stars
    4.6 out of 5
    3,896 global ratings

    Customers say

    Customers like the ease of installation using the cable assembly. They say it's very simple to install and saves a lot of time and money. They also appreciate the performance, saying it works well and save money. Customers are also impressed with the value, saying its an excellent product for the price. They like the connectivity, saying that it keeps multiple connections behind the bumper. Customers also like the appearance, and light. However, some customers differ on fit.

    AI-generated from the text of customer reviews

    268 customers mention268 positive0 negative

    Customers find the installation of the cable assembly to be easy. For example, they mention that it is very simple to install, and it saves a lot of soldering and wiring. Some say that the adapter is super easy to slip between the existing OEM harness.

    "I needed a extra 4 pin and wanted to hidden. Easy install and works great." Read more

    "...brands and none worked or were not wired right for my Dodge Ram.. easy install" Read more

    "...It’s relatively simple; I didn’t have to take off the spare tire. Apply dielectric grease and plug it in!..." Read more

    "Easy installation" Read more

    207 customers mention187 positive20 negative

    Customers are satisfied with the performance of the cable assembly. They mention that it works well and saves money. It snaps right in like it said it would, and is a very professional package.

    "I needed a extra 4 pin and wanted to hidden. Easy install and works great." Read more

    "This works great.. tried 3 other brands and none worked or were not wired right for my Dodge Ram.. easy install" Read more

    "Worked flawless." Read more

    "Easy to install, works great." Read more

    122 customers mention112 positive10 negative

    Customers appreciate the value of the cable assembly. They mention that it is a good product, a cheap way to fix the problem, and sturdy enough.

    "...They seem to be sturdy enough." Read more

    "...Excellent product. I'll probably buy another one in 20 years. Yes, they're that good." Read more

    "Just disconnect and plug in line, just that easy. Worth the money." Read more

    "...clean install. Very good product and can't beat the price. well worth it." Read more

    38 customers mention31 positive7 negative

    Customers like the connectivity of the cable assembly. They mention that it's a good connector, it keeps multiple connections behind the bumper, and it'd be perfect for adding the 4 pin trailer connector. Customers also appreciate that it prevents cutting connections and that it matched perfectly with the OEM connector.

    "It fixed the connectivity issue I had from my truck to my trailer." Read more

    "Excellent wiring harness. Perfect for tailgate light bar. My truck has the 7 pin plug and the light bar was a 4 pin...." Read more

    "...The harness is very good quality, with solid wiring and tight connectors. Now I have things looking the way they should." Read more

    "...This worked perfect! No splicing. Plug and plug! And gives You an extra 3 prong plug also." Read more

    20 customers mention20 positive0 negative

    Customers are satisfied with the appearance of the cable assembly. They mention that it looks OEM and is easy to install. Customers also appreciate the clean factory look it provides.

    "...It’s not some knock-off Chinese piece." Read more

    "...it snapped right in like it said it would, works great, and looks almost OEM! Very satisfied." Read more

    "Awesome product idea. Fits my 2018 Colorado LT...." Read more

    "Very nice and works , easy to install does its job It works well , and makes it very easy to add the led light row that has the trailer plug and..." Read more

    20 customers mention20 positive0 negative

    Customers like the light. They say it is perfect for led tailgate bar light, great for adding tail light bar, and perfect accessory for LED lightbar. It has the 4 prong plug that mates perfectly to the light strip, and it is easy to install. Customers also mention that it is great for backup lights and topper lights.

    "Excellent wiring harness. Perfect for tailgate light bar. My truck has the 7 pin plug and the light bar was a 4 pin...." Read more

    "...Nice harness, and has good protection...." Read more

    "...But otherwise great for hooking up a light bar seemlessly." Read more

    "...super easy to install and it has the 4 prong plug that mates pefectly to the light strip. Everything is out of site behind the bumper...." Read more

    20 customers mention20 positive0 negative

    Customers like the wire cutting feature of the cable assembly. They say it hides unnecessary wires on the rear bumper, and keeps all wires out of sight. It allows them to keep the stock wiring intact, and no unsightly wire splicing is required.

    "This wiring harness was easy to install with no splicing of any wires. The instructions were clear and accurate." Read more

    "...bumper and can still use it for boat trailer or whatever and no messy wire having out" Read more

    "...Clean and easy install. Wires are tucked away." Read more

    "...Super simple, 2 minute install. No wire cutting or splicing." Read more

    105 customers mention65 positive40 negative

    Customers are mixed about the fit of the cable assembly. Some mention that it fits perfectly into the factory wiring, while others say that it's a bit long, the cable is kinda long, and the shrink that they used was too large and allows water in. Some say that the fit for their 2020 Tacoma is a little loose, and that the lightbar wiring length was not generous.

    "Was a perfect fit and I was done in 5 minutes. No more cables looking ugly for my light bar." Read more

    "...The lightbar wiring length was not generous and so having this harness saved the day as the trailer plugs are on the passenger side of the truck…..." Read more

    "...The harness fit perfectly and any excess wire was easily zip tied out of the way." Read more

    "...it doesn’t fit this yr make & model pickup but it definitely does, fits & works perfectly...." Read more

    Took a little work, but I vastly improved the cable layout
    4 Stars
    Took a little work, but I vastly improved the cable layout
    So first thing first, between the two large connectors is literally only 3-4 inches of very stuff wire, makes it impossible to do wire management. After the spilt is 4 ft of wire to the 4 pin harness, I'm using this to hook up a light bar on my truck which has its own 4 ft of cord so, I capped the length at 2 ft ordered 2ft of 7 pin trailer wire and went to town.The middle wire is the reverse if you needed it for a light bar, they give you at least 6ft of that with most light bars, so no need to make it more than 6 inches or so. They do not follow the standard for write coloring charts so reverse, 12v, ground and brake controller are all white wires, it can get confusing, I used post it note tags (just cut the sticky part of a post it and use that.)Ended up getting two of these the first one the reverse wire isn't secure in the harness and keeps losing connection, but I'd already cut into that wire. So the second one I immediately hot glued all the wires into the harnesses as soon as I got them, just took of the grey part hot glued and replaced the grey part, they don't move now. All that is left now is to get wire loom, at least 3/4 inch.To be honest, I think Curt should make one exactly like this, specifically for people hooking up light bars, they make custom wiring harnesses and it is a rather common thing people are looking to get set up. Added a final product, as you can see, it is a much better setup, the small l.pplug goes on the bumper the rest can be managed and organized out of the way
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    Top reviews from other countries

    CoJad
    5.0 out of 5 stars Worth every penny even if you’re experienced in splicing wires
    Reviewed in Canada on January 7, 2021
    One person found this helpful
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    Pat S.
    5.0 out of 5 stars great
    Reviewed in Canada on August 7, 2023
    Phil Parent
    5.0 out of 5 stars Excellent quality item
    Reviewed in Canada on March 22, 2023
    Vulkn1
    4.0 out of 5 stars Arrived on time...easy to install...15 mins
    Reviewed in Canada on September 29, 2021
    Remi Lanteigne
    5.0 out of 5 stars 😁
    Reviewed in Canada on December 4, 2023