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The Best utility trailer wiring harness of 2022 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best utility trailer wiring harness of 2022. Check our ranking below.

2,078 Reviews Scanned

Rank No. #1
18AWG 20Feet 4 Flat Trailer Wire Trailer Harness Extenson Cable 4 Way Flat Trailer Connector
  • This 4 pin trailer connector is designed to match industry standard 4way flat sockets, provides a male plug for your trailer and can be used to replace a worn out, broken wire on a wide variety of trailers
  • Material:Made of Pure copper, Wire diameter 18AWG , The safe temperature is below 105 degrees Celsius and the safe voltage is below 300V. It is wrapped with insulating rubber that will never rust or corrode.
  • If you need trailer lines of other sizes and specifications, you can also click on the other links
  • Safe: The hard PVC shell can protect the wire, anti-corrosion, anti-oxidation, and the rubber-coated design at the wire joint can be more effectively waterproof
  • Universal - Compatible With TRAILERS UNDER & OVER 80" WIDE. Suitable for all types of trailers including marine boat trailer, horse trailer, motorcycle trailer, ATV trailer, and other cargo utility trailer hitches
SaleRank No. #2
4-Way Trailer Wiring Harness Kits, 25-Foot 18 AWG Color Corrosion Resistant Coded Wires with 4 Pin Flat Plug, for Utility Boat Trailer Lights
  • 25ft Wire Harness: 21.65ft length male wire harness and 3.93ft female wire harness
  • 4-way 4-pin hitch trailer wiring harness with connectors
  • Installation easy through the 4-way connectors.
  • Complying with SAE J1128 Standards
  • 18 AWG color coded wiring harness, more durable than the traditional copper coated aluminum wires and split Y-style color coded harness.
Rank No. #3
Miady 25ft Trailer Wiring Harness with 4 Flat Connector, 18 AWG Color Coded Wires Trailer Light Wiring Harness Extension with 4ft White Ground Wire
  • Long Enough: The Miady 25' Trailer Wiring Harness 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.
  • Wishbone Style Wiring Setup Designed: Constructed with Wishbone Style Wiring Setup and 4 way connectors design makes the running light circuit and splits it at the trailer connector, so you do not have to run a jumper wire from one taillight to the other. Simplify the installation process to save more time.
  • 4FT LENGHT GROUND WIRE: Equipped with 4 Way flat plug connector with trailer ends and a white ground wire, designed to split at the trailer tongue and run down each side of the trailer. The trailer side ground wire is 4ft, it is enough to use for your trailer, which is completely sealed for a long corrosion-resistant installation.
  • SIMPLIFIED CONNECTION: Come with 18 AWG COLOR CODED WIRES clearly identify each wire's function, makes it much easier for wires connection as well as adding more convenience and installation safe and straight-forward.
  • Wide Application: Ideal for marine boat trailer, horse trailer, motorcycle trailer, ATV trailer, and other cargo utility trailer hitches (tow/haul vehicle must have 4-way plug) . - We provide 24*7 friendly customer support and also back our products for 18 months. Please feel free to contact us.
SaleRank No. #4
ONLINE LED STORE 4 Pin Flat Trailer Light 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 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.
Rank No. #5
SUZCO 25 Foot 4 Wire 4-Flat Trailer Light Wiring Harness Extension Kit, 4-Way Plug 4 Pin 21" Male & 4" Female Extension Connector & Wishbone-Style with 18 Gauge White Ground Wire with SAE J1128
  • 【ITEM TYPE】This is a 21ft male & 4 ft female 4-flat marine trailer wiring harness with 4-way conductors and a 2ft 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 COPPER 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.
Rank No. #6
LIMICAR Trailer Wiring Harness Kit, 25ft Trailer Wire, Trailer Wiring Harness with 4 Flat Extension Connector, 4 Pin Flat Wishbond Trailer Wiring for Utility Boat Trailer Light Kit
  • 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: Trailer Light Wire 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.
Rank No. #7
Nilight Heavy Duty 7 Way Inline Trailer Plug with 7 Gang Junction Box - 8 Feet, Trailer Connector Cable Wiring Harness with Weatherproof Junction Box Suitable for RV Automotives Cars,2 Years Warranty
  • Simply Your Wire Harness 7-way copper blade molded into a heavy duty plug provides a fast and simplified way for wires connection as well as keeping all your trailer wiring in order
  • Convenient Trailer Wiring Sturdy junction box with color marked 7-poles convenient for wiring left/right turn light brake signal lamp reverse light tail light etc Junction box is much easier than managing loose wires
  • Flexible Connection 8ft long cord with soft and durable PVC housing Flexible Connection The length prevents it from being strained during an emergency turn 7-Way Connects Brake Running Reverse Turn Signals and Auxiliary Power
  • Good Sealing Performance Four open and four close sealed rubber gaskets are provided to make the entire junction box waterproof dustproof and corrosion-proof
  • Package Included 1x 7-Way trailer plug with junction box 4 x open gaskets 4 x Close gaskets
Rank No. #8
Trailer Wiring Harness Kit, 4 Flat 4 Pin 25ft Trailer Light Wiring Kit, Wishbone Style, 18AWG Color Coded Trailer Wiring Fit for Utility Trailer Boat UTV Trailer Lights and Wiring Kit
  • 25FT & 4FT Trailer Wiring Harness Kit: Donepart wiring harness is a complete kit for wiring trailer stop, turn and running lights. The 25 ft. harness kit includes two wiring harnesses with flat four connectors, splice connectors and all the mounting hardware required for basic trailer hookup.
  • Wishbone Design: Come with 2 tail light wire includes male and female 4-flat connectors, split for simple wiring.
  • Wire Diagram: Color coded wires help with installation. White - ground, Brown - tail lights, Yellow - driver side stop/turn,
  • Function: Powers tail light, stop light, turn signals, and all running lights, Green - passenger side stop/turn
  • Suitable for trailers under and over 80″ in width.
SaleRank No. #9
EXERAUO Trailer Wiring Harness Kit, 4 Pin Flat 4 Wire Trailer Wiring Connector, 21ft & 4ft Wishbond Trailer Light Kit 4 Wire Plug Connector Trailer Light Wiring for Utility Trailer Lights
  • 4 Pin Flat Trailer Wiring Harness Kit: Made of high quality materials and undergoes strict quality assurance to provide lasting performance and reliability.
  • 21ft male& 4ft female trailer wiring Extension: Designed with 18 AWG Color Coded Wires, for safe simply wiring.suitable for trailers under and over 80″ in width
  • Color coded wires: Plugs into the 4-way flats with color coded wire to help with installation: White - ground, Brown - tail lights, Yellow - driver side stop/turn, Green - passenger side stop/turn.
  • 25ft harness kit: This trailer harness includes two wiring harnesses with four flat connectors for ease installation and avoid the wire becoming knotted during installation, reduce wiring time
  • To make sure our sincere customers have the best buying experience, we provide 30-day return/ replacement service.If you are not satisfied with the product, please contact us, we will refund you unconditionally.
SaleRank No. #10
8ft 7-Way Trailer Plug Wiring Harness w/ 7 Gang Trailer Junction Box [7-Pin Trailer Cord Wire Cable] [Waterproof] 7 Prong Trailer Wire/Cable Connection Box
  • STREAMLINE YOUR TRAILER WIRING - A sturdy plastic housing with seven terminal studs connected to a 7-way blade connector (with 8 feet of cable) provides a secure location to organize your trailer wiring.
  • SHORTEN UPGRADE AND REPAIR TIME - Quickly add additional equipment and lights, change the power connector, or redo your trailer cable without leaving any wire splices exposed to the elements.
  • DESIGNED TO FIT YOUR NEEDS - With multiple wire inlets and outlets, this box is perfect for wiring up your trailer, camper, boat, or food truck "your way".
  • SEALED FROM THE ELEMENTS - Durable plastic housing coupled with rubber grommets provide superb protection against nature's bad days.
  • RUGGED FACTORY APPEARANCE - Black polypropylene plastic results in a seamless qualitative look; adding the professional touch to your trailer wiring setup.

Last update on 2022-09-07 / Affiliate links / Images from Amazon Product Advertising API

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