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55384 Replacement USCAR 7 Pin to 4 Pin Trailer Harness for Installing Tailgate Light Bar Adapter, USCAR 4-Pin Trailer Extension Wiring 41 Inches, for USCAR 7 Way & Factory Tow Package

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$21.99

$ 10 .99 $10.99

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About this item

  • Tailgate Light Bar Quick Connect: Dual output USCAR 7 pin to 4 pin trailer extension adapter (41 inches) is designed for used as a extension replacement wire for your existing uscar harness, provide you 7 way and 4 way flat multi-tow options to adapter different type of trailer or a 4-way flat socket for LED tailgates lightbar
  • Universal Fit for 7 Pin: This multi-tow 4 flat and 7 way trailer adapter plug works fine with any factory OEM 7-way plug is ideal for most trucks and trailers, compatible with Boat, RV, ATV, for Chevrolet, for Ford, for Dodge, for RAM or for GMC; MECMO quick connect trailer splitter harness is universal fits for most trucks that with a 7-pin connector / standard USCAR socket
  • Spare 7 Pin for Trailer: Plugs USCAR socket into the back of the trailer wiring, keeps your truck’s 7-pin trailer lights connector free, while creating an additional 4-pin connection for light bars or others requiring a 4 prong connection
  • Plug and Play T-Connector: USCAR 4 way tailgate light bar wiring comes ready to plug into an existing USCAR connection on your vehicle require no cutting or splicing your original harness
  • Durable Construction: USCAR to 4pin trailer T harness is made of 16AWG pure copper,with tight-fitting waterproof rubber cap for 4-pole flat trailer connector shielding sockets from water or dust



Product Description

7 Pin to 4 Way Flat Tailgate Trailer Light Connector Adapter Extension - 41 Inches

7 to 4 trailer extension adapter wire vehicle-side uscar 4-pin replacement trailer wiring harness

41" Replacement Vehicle-Side Custom USCAR 4-Pin Trailer Wiring Harness

USCAR Style Vehicle-Side 7 Way Wiring Plug Harness for Truck with Factory Tow Package

  • Maximum amperage: 7.5 amps per circuit
  • Commonly for hookup of Trucks with original USCAR socket
  • Comes ready to plug into existing vehicle wiring, using the factory USCAR socket
  • 4-Pin female trailer harness output connection for LED light bar OR other 4 Pin Connector trailer taillights, brake lights, turn signals
  • Directly plug into the back of your factory 7-way connector so you can retain the 7-way and also pull a trailer that has a 4-pole flat.
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Nothing, but Simple

Whatever your lifestyle, choosing the right MECMO custom trailer wiring harness for your vehicle is easy. Make it easy for your travel.

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USCAR 4-Pin Trailer Wiring Harness T-Connector

Special Design to Fit For Trailer LED Lights, Tailgate Light Bars and Other trailer light connection

  • Plug and play
  • 2 WAY adaptability
  • Retains functionality of factory-installed 7-way with extra 4 pin for trailer light

MECMO Tailgate Led Lightbar 7 to 4 Connector

Great way to add a tailgate light bar if you don't want to use your trailer light plugs

This connector fit just right and gave you the 4-prong connector that as needed for the light strip. Tailgate light trailer wiring harness comes with a nylon net tube to protect the wires also keep wires clean and contained. Time will tell. But connected quick on trucks for tailgate light bar set up.

  • Made LED lightbar wire up easy in minutes
  • T-connector with an extra 4 pin plug
  • Vehicle must already be equipped with USCAR
  • Easy grab for back up light power at the connector

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USCAR Style

  • This USCAR wiring harness designed for trucks with industry-standard USCAR socket
  • No more struggling between style and towing again with MECMO dual connections harness

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Well Protected Cord Cable

This 7 to 4 extension wire is well protected by hard split wire loom tubing, efficiently help harness resistant to oil, gasoline, abrasions.

  • Keep wire from dragging damage
  • All-in-one, make your installation simple and quick.

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Blade tailgate lightbar

  • MECMO Blade connect trailer harness for quick connect to blade tailgate lightbar or other accessory.
  • Nickel-plated copper electrical terminals and premium copper, ensure you get high quality as expected.

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Built for Long-lasting

  • Pure cooper wire, quality ensure
  • Ensure your trailer harness with great performance in oxidation resistance, high conductivity, and low resistance.

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Remain Your OEM Connection

  • Keep your OEM trailer lights connections.
  • Supply power for taillights, turn signals, electric trailer brakes, battery power, reverse lights, brake lights, and a ground connection.

trailer light kit 4 pole flat

Optimum light intensity

  • For long-lasting use and a reliable connection
  • Premium quality copper wires, top grade copper code, excellent construction.
  • Ensures high oxidation resistance, high constructivity, and low resistance

D. A. Black
Reviewed in the United States on March 16, 2025
Great adapter for additional trailer light wiring on my 24 Ram 2500. Plug and play functionality, super easy installation.
darekcelebrado
Reviewed in the United States on February 25, 2025
I’m glad to say it fits and we will see if it works when I get a chance
Mercury Verado
Reviewed in Canada on January 28, 2025
As i was expecting it ,it was fine
Rich
Reviewed in the United States on April 13, 2025
Awesome
D. Beckwith
Reviewed in the United States on September 18, 2024
This made installing the light at a snap! I spliced the backup light wire from the light at into the harness and it worked perfectly.
Eric Carlisle
Reviewed in the United States on August 6, 2024
Works perfect, fits perfectly fine.
W.Tomasino
Reviewed in Canada on July 11, 2024
Install was easy just make sure when you are installing ( wiring the reverse light wire , if you have led tail lights that you check your manufacturer’s wiring system because the coloured were isn’t the same as the wire that’s isn’t the same on the wiring harness which is red. My reverse wire was white and purple.
mark spencer
Reviewed in the United States on July 1, 2024
Very easy to install . Exactly what was needed to install the tailgate light bar . Wires are now hidden.
K. Mackenzie
Reviewed in the United States on February 2, 2024
Fast install on my 2022 RAM Bighorn. No issues with trucks systems. Used it for cleaner install of 3rd brake light for my cap. Only gave 4 stars as I have yet to test the 7 pin with my travel trailer, but I'm not expecting on issues.
Ian
Reviewed in the United States on November 29, 2024
I needed a splitter for my truck trailer lights and bought this. Don’t work for what I needed. It broke because it was cheap. Don’t recommend this cheap y splitter.
Customer
Reviewed in Canada on October 29, 2024
It’s more than a year now when I bought this item and have no problem at all. The materials they used are not cheap and it’s well made. No problem when I installed it in my truck.
Batalyon pitbull
Reviewed in Canada on October 27, 2024
good quality product,it has all the wirings i needed for the tail light bar for my truck
Happy Customer
Reviewed in Canada on April 19, 2024
Working very well for tailgate light bar. Satisfied.