Top 10 Trailer Wiring Harness – Trailer Connectors

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

MICTUNING #ad - Best sealing performance - 4 open & 4 close rubber fitted grommets for option based on your wiring needs, dustproof and corrosion resistant. 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. Convenient trailer wiring - sturdy junction box with color marked 7-poles that can be easily identified, reverse light, gives you more convenience for wiring left/right turn light, brake signal lamp, tail light, etc. 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. What you'll get:2 year mictuning warranty and lifetime best customer service, making the whole junction box waterproof, 4x Open Grommets, 1 x 7-Way Trailer Plug with Junction Box, 4x Close Grommets. Excellent construction - adopted flameproof ABS junction box and good conductivity copper with solid cord, campers, stronger and rugged, caravans, trailers, perfect for RVs, food vans and other towed vehicles.
ManufacturerMICTUNING #ad
Height1 Inches
Length80 Inches
Weight2.97 Pounds
Width2 Inches
Part NumberMIC-TWB-031
Warranty2 Yr Warranty



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 - 25' male & 4' female included- our 4-way trailer wiring harness includes both the male and female sides for added value. 18 awg color coded wires- color coded 18 awg wires clearly identify each wire's function; makes installation safe and straight-forward.

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.
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 - 4-way connectors & fitmentyou 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, and brake lights plus one pin is provided for a ground wire. Free-replacement service.

The white grounding wire is so enough long to wiring. Enough lenght ground wirethis 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. This trailer wire harness kit also can work on an aluminum trailer based on the ground wire. The 4 flat trailer wire is color-coded and bonded wire to easily splice into your trailer's wiring system, made of 18-gauge wire, no need for splicing wires. Extension includingthis 25foot 4 wire boat trailer wiring extension can conform to the sae j1128 specification.

Extends wiring system provides more flexibility. Not compatible with motorcycle trailer wiring, turn, and you could confirm the fitment to be not the wrong item before ordering. Includes a 4-feet trunk connector, splices, and clips. It can protect tow vehicle electronics from wiring shorts. The different color wires are clearly identified as each wire's function, so you can make the installation safe and straight-forward. This trailer wire harness kit is completely sealed for a long corrosion-resistant installation.
BrandSUZCO #ad
ManufacturerSUZCO #ad
Part NumberSUZCO888888888



MaxxHaul 70205 12V All LED Submersible Trailer Light Kit

MAXXHAUL #ad - Product type: Lighting and Electrical. Includes 23 and 4 foot 4-pole color coded wiring harness. For trailers less than 80 Inch wide. Corrosion resistant housing. Kit includes stop, tail and turn signal lights, two amber clearance lights and wiring harness. Complies with dot standards; side lens are with standard bulb. High visibility LED taillights last longer than standard incandescent lights. Includes 23-foot wiring harness with UV coated jackets.
ManufacturerMaxxHaul #ad
Height3.7 Inches
Length12 Inches
Weight2.6 Pounds
Width11.3 Inches
Part Number70205
WarrantyPlease contact seller for manufacturer's warranty



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

CURT #ad - It can be used to connect the taillights, brake lights and turn signals. Reliable connection. 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.

The 12-inch wire lead provides extra length for an easy installation. It features tabs on the top and bottom for a better grip when plugging into your vehicle or unplugging. Ready to install. Equipped with blunt-cut, color-coded wires, this 4-prong trailer wiring plug comes ready to install. Versatile design. This 4-pin trailer wiring plug comes ready to splice into your existing trailer wiring.

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. Durable construction. Easy grip. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of this trailer plug.
BrandCURT #ad
ManufacturerCurt Manufacturing #ad
Height1 Inches
Length3 Inches
Weight0.05 Pounds
Width1 Inches
Part Number58030
WarrantyLimited Lifetime

6. Best Connections


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

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



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

CZC AUTO #ad - 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, ATV trailer, long enough for all kinds of 12V 4-pin connection trailers, dump trailer, enclosed cargo trailer, equipment trailer, utility trailer, such as over & under 80" wide boat trailer, car hauler trailer and so on.

Please find the picture and instruction for details. Y style: wishbone style designed boat trailer wire harness, 4pcs wires for 4-pin female plug and 5PCS wires for 4-flat male connector. 2-years warranty for quality-related issues, we take care of all quality-related issues with a REPLACEMENT OR FULL REFUND. Wire connection: color coded wire directly match the trailer wire system for easy and safe connection. Please feel free to contact us at first if there is any problem when you receive or use our products. There are 2pcs brown running wires which splite from the male plug to left and right tail lights for simple connection, no jumper wires needed.

White wire for grounding, green wire for right stop&turn, brown wire which next to yellow is used for left running&license illumination, yellow for left stop&turn, brown for running&license illuminationmale side, the one next to green is for right running. Client support: 30-day money-back guarantee, return your undamaged czc auto product and receive a full refund for any reason. Sealed and anti-corrosion, 18 gauge 100% pure copper core covered by PVC with UV, can be submersible for a long time.
BrandCZC AUTO #ad
ManufacturerCZC AUTO #ad
Part Number102016

8. Wesbar


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

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



ONLINE LED STORE 8ft 7-Way Trailer Plug Cord Wiring Harness 7-Pin Trailer Wire Cable Brake & Light Control 10-14AWG 7 Prong Trailer Light Cord Wiring Connector for RV

ONLINE LED STORE #ad - Painless replacement - easily upgrade the corroded old 7-way plug on your trailer, RV, food truck, or tow truck. Safe and secure connection - no more dangerous flickering lights or malfunctioning equipment.

The locking plug end features finger lugs for easy removal. 10-14 awg, high quality, double prong, copper terminals ensure a solid connection every time. Exceptional versatility - perfect for trailers with brakes, and any other auxiliary power needs such as charging trailer battery, keeping the refrigerator cool, reverse lights, powering interior lights, etc. Easy to use - cable has been stripped and color coded to simplify the installation. Lifeproof - commercial grade, kink free PVC sheathing is waterproof and corrosion resistant for years of reliable service.
ManufacturerONLINE LED STORE #ad
Height2.76 Inches
Length9.45 Inches
Weight2.38 Pounds
Width8.67 Inches
Part NumberACCEPSCBL3021

10. Nilight


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

Nilight #ad - Good sealing performance four open and four close sealed rubber gaskets are provided to make the entire junction box waterproof dustproof and corrosion-proof. Fit type: Universal. 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.

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.

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. Package included 1x 7-way trailer plug with junction box 4 x open gaskets 4 x Close gaskets.
BrandNilight #ad
ManufacturerNilight #ad
Height1 Inches
Length80 Inches
Weight2.75 Pounds
Width2 Inches
Part Number50024R
Warranty2 Years Warranty