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NEWSUN® Premium 7-Pin to 4-Pin Flat & Dual-Way Trailer Wiring Harness Adapter, Blade Connector Socket to Flat wire, Universal Vehicle-Side Connector | Ideal for Truck, RV and Boat Towing (Black)

4.6 4.6 out of 5 stars 1,368 ratings

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7 Pin Round to 4 Pin Adapter

Purchase options and add-ons

  • 💪 Enjoy the ultimate towing experience with our NEWSUN dual-output 7-pin to 4-pin and 4-pin trailer wiring adapter. Designed to connect mismatched vehicle sockets and trailer plugs, this adapter ensures full functionality of your trailer no matter the connector type.
  • 💡 This multi-functional trailer adapter assures a reliable power supply for your towing activities and seamlessly handles vehicle wiring components including turn signals, brake lights, tail lights, and auxiliary power. Note: Some wiring splicing may be required.
  • 🔧 Crafted from robust ABS plastic, our dual-output trailer hitch adapter is engineered to withstand harsh conditions without rusting, enhancing its aesthetic appeal. Each purchase includes a dust cover and a wire loom for added protection, ensuring your wiring harness remains durable and functional over the years.
  • 🔌 This adapter features standard 7-pin and 4-pin connectors, which securely snaps into your trailer's existing socket without wiggle or looseness. The package comes complete with mounting brackets and necessary hardware for a smooth and simple installation process.
  • ✅ Your satisfaction is our number one priority. Our After-sales Service team is committed to delivering outstanding support, offering a 1-year warranty for this item. If you have any questions, feel free to contact us. We’re always here to help!
  • 💥 Robust Construction: Constructed from durable ABS plastic, this adapter resists rust and corrosion, assuring longevity and reliability. The wire loom neatly secures wires, enhancing durability and longevity.
  • 💡 Dual-Output Design: This multi-function connector transforms your vehicle-side 4-way wiring into a 7-way outlet and a 4-pole flat outlet on your trailer side. A versatile tool for trailers with different plug designs.

Frequently bought together

$15.19
Get it as soon as Tuesday, Mar 26
In Stock
Sold by NEW SUN and ships from Amazon Fulfillment.
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Product Description

NEW SUN 4 pole to 7 pole blade vehicle adapter is an electrical device that allows a connection to be made between a mismatched trailer plug and vehicle socket. It easily plugs in your vehicle's electrical socket and usually requires no additional wiring.

Features:

Features:

Converts 4-way flat trailer connector to a 7-way RV-style connector Additional wire leads for electric brakes, 12V power, and accessory wiring Spring loaded dust cover protects connector from the elements Easy installation Wiring harness plugs into existing 4-way flat connector and hardwires to existing wiring

specifications

Specification:

Harness length: 12" Green wire (from 4-way plug): right turn signal and brakes Yellow wire (from 4-way plug): left turn signal and brakes Brown wire (from 4-way plug): tail lights Blue wire: electric brake controller Black wire: battery Yellow wire: 12V power supply or auxiliary White wire: ground wire

Application scenarios

Application scenarios

This adapter converts your vehicle's the 4-pin flat socket to the 7-pin blade round type socket.

Including RV, truck, trailer, camper, car carrier, boat trailer, etc

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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NEWSUN®

NEWSUN® Premium 7-Pin to 4-Pin Flat & Dual-Way Trailer Wiring Harness Adapter, Blade Connector Socket to Flat wire, Universal Vehicle-Side Connector | Ideal for Truck, RV and Boat Towing (Black)


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    Customer reviews

    4.6 out of 5 stars
    4.6 out of 5
    1,368 global ratings

    Customers say

    Customers like the performance, quality and ease of installation of the tow hitch. For example, they mention that it works great, the fasteners and terminals are good quality and that it's easy to mount and connect. That said, opinions are mixed on the fit.

    AI-generated from the text of customer reviews

    63 customers mention61 positive2 negative

    Customers are satisfied with the performance of the tow hitch. They mention that it works great, and all of the lights and brakes worked correctly.

    "Half the cost of anything else I could find. Worked well on our Subaru Outback. Screwed right to the side of our trailer hitch." Read more

    "bought to use as a pig tail on my trailer, works awesome!" Read more

    "...They work great but I didn't swap out the harness off my last truck...." Read more

    "This works great and can be taken apart and rebuilt. I did so when I noticed that there was a tiny amount of rust in the guys of the terminals...." Read more

    53 customers mention43 positive10 negative

    Customers like the quality of the tow hitch. They mention that the fasteners and terminals are of good quality, and the pigtail is plenty long. Some are not sure about the contacts, but the wire is well encased and works well. Overall, most are satisfied with the product's quality and functionality.

    "This seems well made, so no quality issues...." Read more

    "Excellent product and fast shipping" Read more

    "...for a more permanent solution eventually, but for now, this adapter is working well." Read more

    "...I is solid material and seems heavy duty. It will work." Read more

    44 customers mention44 positive0 negative

    Customers find the installation of the tow hitch to be easy. They mention that it is easy to mount and connect, wire up, and hook up. They also say that it works perfectly and makes life easy without having to run a bunch of cables.

    "...Easy to connect." Read more

    "Easy to install and seems well made" Read more

    "...easy to mount and connect." Read more

    "...This adapter does exactly what I need with a minimum of fuss, and includes the bracket so I can attach it to our existing hitch." Read more

    27 customers mention27 positive0 negative

    Customers appreciate the value of the tow hitch. They mention that it works perfectly, is cheap, and works as it should.

    "...way plug could be a little longer but overall no complaints and worth the price" Read more

    "It was easy to install. it was priced well. to bad it was not what I orderd." Read more

    "Appears to be a good product at a good price" Read more

    "...It does come with all the necessary things to install. Good value for the price." Read more

    13 customers mention7 positive6 negative

    Customers have mixed opinions about the fit of the tow hitch adapter. Some mention that it fits perfectly, works great, and is easy to use and install, while others say that it does not fit their application, does not work with modern boat harnesses, and that the round male connector was slightly too large to fit the female socket on their tractor.

    "Used this for new boat. Perfect fit on existing vehicle hitch." Read more

    "purfict fit for my app." Read more

    "Strong connectors, good wire well encased. Fit the bill perfectly." Read more

    "7-pole round male connector was slightly too large to fit female socket on tractor making adaptor useless...." Read more

    11 customers mention7 positive4 negative

    Customers are mixed about the bracket. Some mention it's easy to install and comes with everything needed to get it going. However, others say that it doesn't come with a bracket or screws.

    "...adapter does exactly what I need with a minimum of fuss, and includes the bracket so I can attach it to our existing hitch." Read more

    "Only difficulty was the grounding screw attachment." Read more

    "...It came complete with a mounting bracket and appears to be a quality product. Time will tell how it holds up." Read more

    "...It does come with all the necessary things to install. Good value for the price." Read more

    Great Value!
    5 Stars
    Great Value!
    Half the cost of anything else I could find. Worked well on our Subaru Outback. Screwed right to the side of our trailer hitch.
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    Top reviews from the United States

    Reviewed in the United States on February 21, 2024
    Color: 7-Pin Trailer Plug with 7-Way ConnectorVerified Purchase
    Customer image
    5.0 out of 5 stars Great Value!
    Reviewed in the United States on February 21, 2024
    Half the cost of anything else I could find. Worked well on our Subaru Outback. Screwed right to the side of our trailer hitch.
    Images in this review
    Customer image
    Customer image
    Reviewed in the United States on June 6, 2023
    Color: 4 Way Flat to 6 Way Round ConnectorVerified Purchase
    One person found this helpful
    Report
    Reviewed in the United States on February 21, 2024
    Color: 7-Way Trailer Plug SocketVerified Purchase
    Reviewed in the United States on February 22, 2024
    Color: 4 Way Flat to 6 Way Round ConnectorVerified Purchase
    Reviewed in the United States on July 25, 2022
    Color: 4 Way Flat to 6 Way Round ConnectorVerified Purchase
    Customer image
    5.0 out of 5 stars Fits my truck with no drilling needed.
    Reviewed in the United States on July 25, 2022
    I have had my car hauler for many years and it has the 6 round pin connector. They work great but I didn't swap out the harness off my last truck.

    This came with a bracket that I figured I would need since my truck bumper only had the 4 holes for the 7 blade type connector. Nope! I turned it diagonally and the holes lined right up. Must be clean livin. :)

    The four pin connected perfectly as well.
    Images in this review
    Customer image
    Customer image
    One person found this helpful
    Report
    Reviewed in the United States on July 26, 2023
    Color: 4 Way Flat to 6 Way Round ConnectorVerified Purchase
    Reviewed in the United States on June 5, 2023
    Color: 7 Pin Round to 7 Way RV ConnectorVerified Purchase
    One person found this helpful
    Report
    Reviewed in the United States on August 13, 2023
    Color: 7 Pin Round to 7 Way RV ConnectorVerified Purchase

    Top reviews from other countries

    Alex van S.
    5.0 out of 5 stars Worked without issue
    Reviewed in Canada on August 26, 2023
    Color: 4 Pin to 7 Pin Trailer AdapterVerified Purchase
    murray a
    5.0 out of 5 stars Well-made extension cord
    Reviewed in Canada on July 19, 2023
    Color: 7-Way Trailer Plug SocketVerified Purchase
    Michael Watt
    5.0 out of 5 stars Worked exactly as advertised
    Reviewed in Canada on May 31, 2023
    Color: 4 Pin to 7 Pin Trailer AdapterVerified Purchase
    Triston
    5.0 out of 5 stars Excellent product
    Reviewed in Canada on August 2, 2022
    Color: 4 Pin to 7 Pin Trailer AdapterVerified Purchase
    Daniel Ivanic
    5.0 out of 5 stars Looks and functions great
    Reviewed in Canada on June 29, 2022
    Color: 4 Pin to 7 Pin Trailer AdapterVerified Purchase