Check Out This Great Selection Of All High-Quality flat trailer wiring harness Products

We keep updating this blog because we frequently review and rate new flat trailer wiring harness products. The highest-rated flat trailer wiring harness products are on the blog.

Check out our in-depth reviews, including reviews of top flat trailer wiring harness products.

Find the highest-rated products in our flat trailer wiring harness products store and read the most helpful customer reviews to help you find the right product for you.

4 Pin Flat Trailer Wiring Harness Kit [Wishbone-Style] [SAE J1128 Rated] [25′ Male & 4′ Female] [18 AWG Color Coded Wires] 4 Way Flat 5 Wire Harness For Utility Boat Trailer Lights Kits

 

  • 25′ MALE & 4′ FEMALE INCLUDED- Our 4-way trailer wiring harness includes both the male and female sides for added value.
  • WISHBONE STYLE WIRING SETUP- Wishbone design makes it easier to wire to the taillights; simplifies installation process.
  • SAE J1128 RATED- Meets SAE standards for a low voltage primary cable intended for use at a nominal system voltage of 60 V DC (25 V AC) or less in surface vehicle electrical systems; backed by a 2 year warranty.
  • FOR TRAILERS UNDER & OVER 80″ WIDE- Long total wire length (25′ plus 4′) make this trailer harness kit perfect for trailers measuring under or over 80″ wide.
  • 18 AWG COLOR CODED WIRES- Color coded 18 AWG wires clearly identify each wire’s function; makes installation safe and straight-forward.

Shopping for the best flat trailer wiring harness product can be difficult, but it’s not impossible

The Internet is a big place with lots of options. It can be overwhelming to choose the best flat trailer wiring harness product out there, but fortunately for you, we are here to help!

We are here to showcase to you how customers can use the following steps when they’re trying to find the best flat trailer wiring harness product on the internet:

1) Read customer reviews before purchasing any item online.
2) Use social media sites like Facebook or Twitter (or review apps like Yelp or TripAdvisor) where other people share their opinions about products too.
3) Look at pricing; if something appears very cheap, be aware that there may be quality issues with what you’re buying
4) Consider your personal needs

SUZCO 36 Ft 4 Wire 4-Flat Trailer Light Wiring Harness Extension Kit, Custom-Made 28′ Male & 8′ Female with 4′ White Ground Wire, 4-Way Plug 4 Pin Male & Female Extension & Wishbone-Style & SAE J1128

 

  • 【ITEM TYPE】This is our SUZCO custom-made vehicle-specific 36FT male & female 4-flat marine trailer wiring harness with 4-way conductors and a 4′ white ground wire, it fits for longer trailers and for customers desiring to wire, made of 18-gauge wire, designed to split at the trailer tongue and run down each side of the trailer. This trailer wire harness kit is completely sealed for a long corrosion-resistant installation.
  • 【36′ EXTENSION INCLUDING】This 36foot 4 wire boat trailer wiring extension can conform to the SAE J1128 specification. Extends wiring system provides more flexibility. It can protect tow vehicle electronics from wiring shorts. Includes a 4-feet trunk connector, splices, and clips. This trailer wire harness kit also can work on an aluminum trailer based on the ground wire.
  • 【ENOUGH LENGHT GROUND WIRE】This trailer wire extension with a 4 way flat plug connector is designed to supply power for tail lights, turn and brake lights, as well as a ground connection. The white grounding wire is so enough long to wiring. The trailer side ground wire is about 2ft. Trailer wiring harness features a ground wire. The white ground wire is made of 18-gauge, which is corrosion-resistant terminal.
  • 【4-WAY CONNECTORS & FITMENT】You can install the trailer wire so quickly and easily through the 4-way connectors. 4-pin connectors are available allowing the basic hookup of the three lighting functions (running, turn, and brake lights) plus one pin is provided for a ground wire. Most standard light duty trailers will use a 4-pole flat connector. Not compatible with motorcycle trailer wiring, and you could confirm the fitment to be not the wrong item before ordering.
  • 【4 WIRING INSTRUCTION】The 4 flat trailer wire is color-coded and bonded wire to easily splice into your trailer’s wiring system, no need for splicing wires. There are instructions for wiring the running light and license plate lights included. The different color wires are clearly identified as each wire’s function, so you can make the installation safe and straight-forward.

CURT 58030 Trailer-Side 4-Pin Flat Wiring Harness with 12-Inch Wires

 

  • EASY GRIP. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of this trailer plug. It features tabs on the top and bottom for a better grip when plugging into your vehicle or unplugging
  • RELIABLE CONNECTION. This 4-pin trailer wiring plug comes ready to splice into your existing trailer wiring. It has 16-gauge wires and can be used to connect the taillights, brake lights and turn signals
  • VERSATILE DESIGN. This trailer connector makes a great replacement 4-flat trailer wiring connector. The 4-pin wiring design matches industry-standard 4-way flat sockets and can be used on a wide variety of trailers
  • DURABLE CONSTRUCTION. For long-lasting use and a reliable connection, the housing of this 4-pin trailer wiring plug is made from durable black molded rubber that will never rust or corrode
  • READY TO INSTALL. Equipped with blunt-cut, color-coded wires, this 4-prong trailer wiring plug comes ready to install. The 12-inch wire lead provides extra length for an easy installation

CURT 58050 Vehicle-Side and Trailer-Side 4-Pin Flat Wiring Harness with 72-Inch Wires

 

  • EASY GRIP. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of these vehicle-trailer connectors. They feature tabs on the top and bottom for a better grip when plugging in or unplugging
  • RELIABLE CONNECTION. These 4-pin trailer wiring plugs come ready to splice into your existing vehicle and trailer wiring. They have 16-gauge wires and can be used to connect the taillights, brake lights and turn signals
  • VERSATILE DESIGN. These vehicle-trailer connectors make great replacement 4-flat wiring plugs and sockets. The 4-pin wiring design matches industry-standard 4-way flat connectors and is compatible with a wide variety of trailers
  • DURABLE CONSTRUCTION. For long-lasting use and a reliable connection, the housing of these 4-pin trailer wiring plugs is made from durable black molded rubber that will never rust or corrode
  • READY TO INSTALL. Equipped with color-coded wires, these 4-prong trailer wiring connectors come ready to install. The 72-inch wire loop provides plenty of extra length for a flexible installation

Find a flat trailer wiring harness product that you like and buy the branded version of it.

Think of a time when you were looking for something and couldn’t find it anywhere. It’s frustrating, right?

What if that feeling multiplied by ten every day- how would we live then? That is why we recommend flat trailer wiring harness branded products because they’re guaranteed to have exactly what my needs are; not too little or excessive amounts so there will definitely be enough!

There are many ways to find quality flat trailer wiring harness products, if you’re looking to save some money on your purchases, then this is the place for you. We have all sorts of quality branded flat trailer wiring harness items!

Yes!!! You’ll be able to find something that fits any need and taste at affordable prices too (of course) in the following.

Wesbar 787268 Trailer End Connector Wire

 

  • Wesbar 787268
  • 4-Flat Trailer End Connector
  • 8′ Jacketed Cable
  • Item Package Weight: 0.93 pounds

CURT 58300 Vehicle-Side Trailer Wiring Harness Mounting Bracket for 4-Way Flat

 

  • STANDARD FIT. This trailer wiring mounting bracket is designed to securely mount virtually any industry-standard 4-way flat connector
  • FLEXIBLE MOUNTING. The bracket features a simply friction fit design to accept a variety of trailer wiring harnesses. It allows you to mount the wiring harness onto your vehicle or trailer hitch, whichever is most convenient
  • HIGH-STRENGTH. This trailer wiring harness bracket is made from solid steel to provide plenty of strength for a solid mount and to remain fixed in spite of vibrations while towing. The steel body will not crack like plastic alternatives
  • CORROSION-RESISTANT. To face the weather and elements with ease, this trailer wiring bracket is covered in a black powder coat finish, helping to resist rust for long-lasting strength
  • EASY TO INSTALL. To install this mounting bracket for vehicle-trailer wiring, you can bolt it directly onto your vehicle using the top screw holes, or you can pair this bracket with the CURT #57204 for a convenient, no-drill, tube clamp mount

CURT 58040 Vehicle-Side 4-Pin Flat Trailer Wiring Harness with 60-Inch Wires

 

  • EASY GRIP. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of this vehicle socket. It features tabs on the top and bottom for a better grip when plugging in or unplugging
  • RELIABLE CONNECTION. This 4-pin trailer wiring socket comes ready to splice into your existing vehicle wiring. It has 16-gauge wires and can be used to connect the taillights, brake lights and turn signals
  • VERSATILE DESIGN. This vehicle-trailer connector makes a great replacement 4-flat trailer wiring connector for your vehicle. The 4-pin wiring design matches industry-standard 4-way flat plugs and can be used for towing a wide variety of trailers
  • DURABLE CONSTRUCTION. For long-lasting use and a reliable connection, the housing of this vehicle-side 4-pin trailer wiring plug is made from durable black molded rubber that will never rust or corrode
  • READY TO INSTALL. Equipped with blunt-cut, color-coded wires, this 4-prong trailer wiring plug comes ready to install on your vehicle. The 60-inch wire lead provides plenty of extra length for a flexible installation

Best place to buy flat trailer wiring harness products

A customer’s choice of retailer is an important decision when you are buying flat trailer wiring harness products. Retailers may vary in price, quality, and reliability; it is up to the customer which factors they prioritize when making their decision.

It is always a challenge to find the best place to buy flat trailer wiring harness products. It can be difficult because there are so many retailers and each one has different prices and offers different types of flat trailer wiring harness products. You might think that is easy, just go with what you think is the cheapest or the most convenient but it’s not that simple.

If the retailer offers some sort of return policy on their products, then this ensures that if there are any issues with the product or it doesn’t work properly, you can always take it back and at least receive a partial refund on what was purchased.

SUZCO 25 Foot 4 Wire 4-Flat Trailer Light Wiring Harness Extension Kit, 4-Way Plug 4 Pin Male & Female Extension Connector & Wishbone-Style with 18 Gauge White Ground Wire with SAE J1128

 

  • 【ITEM TYPE】This is a 25 foot male & female 4-flat marine trailer wiring harness with 4-way conductors and a white ground wire, made of 18-gauge wire, designed to split at the trailer tongue and run down each side of the trailer. The 4 flat trailer wire is color-coded and bonded wire to easily splice into your trailer’s wiring system, no need for splicing wires. This trailer wire harness kit is completely sealed for a long corrosion-resistant installation.
  • 【EXTENSION INCLUDING】This 25foot 4 wire boat trailer wiring extension can conform to the SAE J1128 specification. Extends wiring system provides more flexibility. It can protect tow vehicle electronics from wiring shorts. Includes a 4-feet trunk connector, splices, and clips. This trailer wire harness kit also can work on an aluminum trailer based on the ground wire.
  • 【ENOUGH LENGHT GROUND WIRE】This trailer wire extension with 4 way flat plug connector is designed to supply power for tail lights, turn and brake lights, as well as a ground connection. The white grounding wire is so enough long to wiring. The trailer side ground wire is about 2ft. Trailer wiring harness features a ground wire. The white ground wire is made of 18-gauge, which is corrosion resistant terminal.
  • 【4-WAY CONNECTORS & FITMENT】You can install the trailer wire so quickly and easily through the 4-way connectors. 4-pin connectors are available allowing the basic hookup of the three lighting functions (running, turn, and brake lights) plus one pin is provided for a ground wire. Most standard light duty trailers will use a 4-pole flat connector. Not compatible with motorcycle trailer wiring, and you could confirm the fitment to be not the wrong item before ordering.
  • 【4 WIRING INSTRUCTION】There are instructions for wiring the running light and license plate lights included. The different color wires are clearly identified as each wire’s function, so you can make the installation safe and straight-forward.

Steps of identifying the flat trailer wiring harness product quality

You are about to buy a flat trailer wiring harness product, but you aren’t sure it’s the right one for your needs. This post will help you identify the quality of your purchase before you place an order!

This blog post is designed to help customers identify the quality of their products before they make a purchase decision. When making any sort of large-ticket or online purchase, it can be difficult to know if the item in question is high enough quality for your needs.

You can read reviews, but if they have too many or few details, then use the below guide for determining quality based on five different criteria: materials, construction process, company reputation and warranty/returns policies. Read more here!

LIMICAR Trailer Wiring Harness Extension Kit, 25ft Trailer Wiring Harness with 4 Flat Extension Connector, 4 Pin Flat Wishbond Trailer Harness for Utility Boat Trailer Lights Kits

 

  • 25FT Male & 4-Flat Female Trailer Wiring Harness Extension Kit: Fits Trailers under & over 80″ wide. Wire length (25′ & 4′) makes this trailer harness kit perfect for trailers measuring under or over 80″ wide.
  • 18 AWG Color Coded Wires Wishbone Style Harness: 4 flat trailer wire is color-coded and bonded wire for easily installation. White wire: Ground (Negative). Brown wire: Tail Lights. Yellow wire: Driver Side Stop/Turn Lights. Green wire: Passenger Side Stop/Turn Lights. The white ground wire is made of 18-gauge, reduce corrosion and makes installation safe.
  • 25′ Trailer Wiring Harness: Designed to split at the trailer tongue and run down each side of the trailer, 4′ trailer side ground wire is enough to use for your trailer. Gives you the extra length, just need to extend current truck to trailer wires. No need to splice your new wires, simply extend them with this extender.
  • 4-Way Flat Trailer Harness Kit: Complying with SAE J1128 standards for a low voltage primary cable. Constructed from the highest quality materials and superior quality guaranteed.
  • Widely Application: Suitable for marine boat trailer, horse trailer, ATV trailer, and other cargo utility trailer hitches (tow/haul vehicle must have 4-way plug). Not compatible with motorcycle trailer wiring. Please confirm the fitment with us before ordering.

Nilight – 10039W 4 Pin Flat Trailer Wiring Harness Kit 18AWG 25Feet Male 4Feet Female Wishbone-Style Wiring Harness Extension kit for Utility Boat Trailer Lights

 

  • Wire Length: Comes with 18AWG 25ft male and 4ft female connector wire, both with full ground wire for your use. Designed to split at the trailer tongue and run down each side of the trailer to supply power for trailer lights.
  • Built To Last: Employ quality pure copper wire with tin plating for the best current conductivity and anti-oxidation ability, and premium PVC coating for the best anti-corrosion and anti-aging ability. Withstand sea water, no brittleness, no break, durable to last.
  • Standard 4 Way Flat Connector: Male plug with 5 wires, female plug with 4 wires. Plug and play, matches with any other standard 4 pin flat plugs.
  • Color Coded Wires: Wires are color coded and bonded, white for ground, brown for running and license light, yellow for left stop turn and green for right stop. Easily to route into your trailer’s wiring system and connect with lights.
  • Universal Application: Work perfectly on trailers under and over 80” wide such as marine boat trailer, cargo utility trailer to install trailer lights.

After comparing lots of flat trailer wiring harness products, then picked the most popular flat trailer wiring harness products to put into our selection. The flat trailer wiring harness products in the post are of good quality and at a reasonable price. 

We read both good and bad customers’ reviews from the Internet to confirm what we choose is worthy to buy really at its price. The quality of the flat trailer wiring harness products recommended in the blog is guaranteed.

This is a trustworthy and reliable website with excellent value for money. 

We are always at your disposal.