Top 10 Trailer Wiring Harness – Trailer Connectors

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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

ONLINE LED STORE #ad - 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.

18 awg color coded wires- color coded 18 awg wires clearly identify each wire's function; makes installation safe and straight-forward. 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. 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.
ManufacturerONLINE LED STORE #ad
Height2.5 Inches
Length7.5 Inches
Weight0.95 Pounds
Width3.5 Inches
Part NumberACCEPSCBL0105



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

SUZCO #ad - The different color wires are clearly identified as each wire's function, so you can make the installation safe and straight-forward. 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.

Free-replacement service. Extends wiring system provides more flexibility. The white grounding wire is so enough long to wiring. 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. Item typethis 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.

4 wiring instructionthere are instructions for wiring the running light and license plate lights included. This trailer wire harness kit is completely sealed for a long corrosion-resistant installation. Includes a 4-feet trunk connector, splices, and clips. 4-way connectors & fitmentyou can install the trailer wire so quickly and easily through the 4-way connectors. Extension includingthis 25foot 4 wire boat trailer wiring extension can conform to the sae j1128 specification. The trailer side ground wire is about 2ft.
BrandSUZCO #ad
ManufacturerSUZCO #ad
Part NumberSUZCO888888888



Weatherproof, MICTUNING Heavy Duty 7 Way Plug Inline Trailer Cord with 7 Gang Junction Box, 8 Feet

MICTUNING #ad - Best sealing performance - 4 open & 4 close rubber fitted grommets for option based on your wiring needs, 1 x 7-Way Trailer Plug with Junction Box, 4x open Grommets, dustproof and corrosion resistant. Excellent construction - adopted flameproof ABS junction box and good conductivity copper with solid cord, stronger and rugged, perfect for RVs, trailers, caravans, campers, food vans and other towed vehicles.

Tidy 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. Cautions: pls read the plug diagram carefully and refer to the diagram to install this 7 way plug. Flexible connection - 8ft long cord with soft and durable pvc housing that offers you plenty of flexibility to wire it from the front to the rear of your car.

Not like others, only 4ft or 6ft. Convenient trailer wiring - sturdy junction box with color marked 7-poles that can be easily identified, brake signal lamp, tail light, reverse light, gives you more convenience for wiring left/right turn light, etc. What you'll get:2 year mictuning warranty and lifetime best customer service, making the whole junction box waterproof, 4x Close Grommets.
ManufacturerMICTUNING #ad
Height1 Inches
Length80 Inches
Width2 Inches
Part NumberMIC-TWB-031
Warranty2 Yr Warranty



12V All LED Submersible Trailer Light Kit

MAXXHAUL #ad - Corrosion resistant housing. For trailers less than 80 Inch wide. High visibility LED taillights last longer than standard incandescent lights. Kit includes stop, tail and turn signal lights, two amber clearance lights and wiring harness. Includes 23-foot wiring harness with UV coated jackets. Includes 23 and 4 foot 4-pole color coded wiring harness. Complies with dot standards; side lens are with standard bulb. Product type: Lighting and Electrical.
ManufacturerMaxxHaul #ad
Height3.7 Inches
Length12 Inches
Width11.3 Inches
Part Number70205
WarrantyPlease contact seller for manufacturer's warranty

5. Best Connections


14 Ga 50 Feet, Best Connections 7-Way Trailer Wiring Harness

Best Connections #ad - 7 conductor stranded 14 gauge wire harness 50 Feet. Insulated with flexible jacketing. Perfect for rewiring trailers, aftermarket lights, stereo systems, and more.7 wires in one, purple, green, White, Brown, yellow, Blue, and Red. Cable length: 50 Feet Hand Rolled.
BrandBest Connections #ad
ManufacturerBest Connections #ad
Part NumberTR-14-7-50



CZC AUTO Trailer Wiring Harness Kit 4-Way Wishbone Style, Y Style 18AWG Pure Copper Core Color Coded Wire with Standard 4-pin Flat Plug Connector, 4' Female and 25' Male for 12V Trailer Boat Marine

CZC AUTO #ad - Please feel free to contact us at first if there is any problem when you receive or use our products. 2 years warranty supplied by CZC AUTO. Total 29ft: 4ft long wire on female plug side for vehicle and 25ft on male side for trailer lights, enclosed cargo trailer, such as over & under 80" wide boat trailer, ATV trailer, utility trailer, equipment trailer, dump trailer, long enough for all kinds of 12V 4-pin connection trailers, car hauler trailer and so on.

2-years warranty for quality-related issues, we take care of all quality-related issues with a REPLACEMENT OR FULL REFUND. Client support: 30-day money-back guarantee, return your undamaged czc auto product and receive a full refund for any reason. The male and female plug pin size is standard which can match different standard male or female plug together. Sealed and anti-corrosion, 18 gauge 100% pure copper core covered by PVC with UV, can be submersible for a long time. We are always here to support you. Wire connection: color coded wire directly match the trailer wire system for easy and safe connection.

Please find the picture and instruction for details. Pure copper core: czc auto trailer wiring harness uses superior materials, pvc plug with stain nickel plated copper terminals inside. Y style: wishbone style designed boat trailer wire harness, 4pcs wires for 4-pin female plug and 5PCS wires for 4-flat male connector. White wire for grounding, brown wire which next to yellow is used for left running&license illuminationmale side, yellow for left stop&turn, green wire for right stop&license illumination, brown for running&turn, the one next to green is for right running.
BrandCZC AUTO #ad
ManufacturerCZC AUTO #ad
Part Number102016



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

CURT #ad - Versatile design. Ready to install. The 4-pin wiring design matches industry-standard 4-way flat sockets and can be used on a wide variety of trailers. This trailer connector makes a great replacement 4-flat trailer wiring connector.

Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of this trailer plug. Reliable connection. This 4-pin trailer wiring plug comes ready to splice into your existing trailer wiring. 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.

Equipped with blunt-cut, color-coded wires, this 4-prong trailer wiring plug comes ready to install. It features tabs on the top and bottom for a better grip when plugging into your vehicle or unplugging. It can be used to connect the taillights, brake lights and turn signals. Durable construction. The 12-inch wire lead provides extra length for an easy installation. Easy grip.
BrandCURT #ad
ManufacturerCurt Manufacturing #ad
Height2 Inches
Length7 Inches
Weight0.05 Pounds
Width2 Inches
Part Number58030
WarrantyLimited Lifetime

8. Miady


18 AWG Color Coded Wires Trailer Light Wiring Harness Extension with 4ft White Ground Wire, Miady 25ft Trailer Wiring Harness with 4 Flat Connector

Miady #ad - Simplify the installation process to save more time. 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. We provide 24*7 friendly customer support and also back our products for 18 months.

The trailer side ground wire is 4ft, which is completely sealed for a long corrosion-resistant installation. 4ft lenght ground wire: equipped with 4 way flat plug connector with trailer ends and a white ground wire, it is enough to use for your trailer, designed to split at the trailer tongue and run down each side of the trailer. 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 .

Long enough: the miady 25' trailer wiring harness gives you the extra length, just need to extend current truck to trailer wires. 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. Please feel free to contact us. No need to splice your new wires, simply extend them with this extender.
BrandMiady #ad
ManufacturerMiady #ad
Part NumberTWH4M



7-Pin, 4-Pin, CURT 55774 Dual-Output Vehicle-Side Trailer Wiring Harness Connectors for USCAR

CURT #ad - This dual-output connector is a great upgrade for a variety of vehicles with a USCAR socket. Uscar-specific. The 7-pin socket has a spring-loaded dust cover that keeps the connection points dry and protected when not in use.

It provides two standard trailer wiring sockets, a 4-way flat and an RV blade 7-way round socket, allowing for versatile towing options. They connect the taillights, turn signals, brake lights, electric trailer brakes and aux power. This trailer wiring harness socket is designed for specific vehicles with an industry-standard USCAR socket. This two-way trailer wiring socket is designed to outlast weather exposure.

Versatile design. Durable construction. For long-lasting use and a reliable connection, the housing of this dual 7-pin and 4-pin trailer wiring socket is made from durable black plastic that will never rust or corrode. Weather-resistant. Reliable connection. These trailer wiring sockets come ready to plug into existing vehicle wiring, reverse lights, using the factory USCAR socket.
BrandCURT #ad
ManufacturerCurt Manufacturing #ad
Height2 Inches
Length9 Inches
Weight1.13 Pounds
Width4 Inches
Part Number55774
WarrantyManufaturer warranty

10. Wesbar


Wesbar 707261 Wishbone Style Trailer Wiring Harness with 4-Flat Connector,3-Feet

Wesbar #ad - Conforms to saE J1128 specification. Limited 1 Year Warranty. Color coded 18 gauge bonded wires. Wishbone design for superior trailer installation. Color coded 18 gauge bonded wires. Conforms to saE J1128 specification. 4 way trailer wiring harness, 25 foot length with 3 foot ground wire. 4-way trailer wiring harness, 25 foot length with 3 foot ground wire. Wishbone design for superior trailer installation.
BrandWesbar #ad
ManufacturerWesbar #ad
Height2.5 Inches
Length8 Inches
Weight1 Pounds
Width5 Inches
Part Number707261