Top 10 Trailer Wiring Harness Extension Kit – 4 Pin – Towing Hitch Wiring

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1. SUZCO

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

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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. 4 wiring instructionthere are instructions for wiring the running light and license plate lights included.

Extends wiring system provides more flexibility. Not compatible with motorcycle trailer wiring, and you could confirm the fitment to be not the wrong item before ordering. The trailer side ground wire is about 2ft. Item typethis is a 25 foot male & female 4-flat marine trailer wiring harness with 4-way conductors and a white ground wire, designed to split at the trailer tongue and run down each side of the trailer. The white ground wire is made of 18-gauge, turn and brake lights, which is corrosion resistant terminal. Trailer wiring harness features a ground wire. 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. 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. Enough lenght ground wirethis trailer wire extension with 4 way flat plug connector is designed to supply power for tail lights, as well as a ground connection.
BrandSUZCO #ad
ManufacturerSUZCO #ad
Weight0.02 Pounds
Part NumberSUZCO888888888
Model4350429910

2. ONLINE LED STORE

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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

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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.

25' male & 4' female included- our 4-way trailer wiring harness includes both the male and female sides for added value. 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. Wishbone style wiring setup- wishbone design makes it easier to wire to the taillights; simplifies installation process. 18 awg color coded wires- color coded 18 awg wires clearly identify each wire's function; makes installation safe and straight-forward.
BrandONLINE LED STORE #ad
ManufacturerONLINE LED STORE #ad
Height2.5 Inches
Length7.5 Inches
Weight0.95 Pounds
Width3.5 Inches
Part NumberACCEPSCBL0105
Model4336325634

3. MICTUNING

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4 Pin 25 Feet Male and 6 Feet Female Connector, 18 AWG Color Coded 4-Way Flat Wires for Under or Over 80 Inches Wide Trailers, MICTUNING Trailer Wiring Harness Extension Kit

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MICTUNING #ad - 18awg color coded wires - sae j1128 rated, easily splice into your trailer's wiring system, Meets SAE standards. The 4 flat trailer wire is color-coded to clearly identify each wire's function, no need for splicing wires.

Universal - compatible with trailers under & over 80" wide. Reliable connection - 4-way flat plug connectors come ready to splice into your existing vehicle and trailer wiring, turn and brake lights, supply power for tail lights, as well as a ground connection.225' male & 6' female side - our 4-way trailer wiring harness includes 25 foot male & 6 foot female, and you can install the trailer wire so quickly and easily through the 4-way connectors.

Wishbone style wiring setup - wishbone design makes it easier to wire to the taillights; The running lights are split into two wires on the trailer side for ease of wiring up the left and right sides without needing a jumper wire. Suitable for all types of trailers including marine boat trailer, motorcycle trailer, horse trailer, ATV trailer, and other cargo utility trailer hitches.
BrandMICTUNING #ad
ManufacturerMICTUNING #ad
Part NumberMIC-TWH-309

4. CURT

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

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CURT #ad - 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. The 72-inch wire loop provides plenty of extra length for a flexible installation.

Easy grip. The 4-pin wiring design matches industry-standard 4-way flat connectors and is compatible with a wide variety of trailers. These vehicle-trailer connectors make great replacement 4-flat wiring plugs and sockets. Ready to install. Equipped with color-coded wires, these 4-prong trailer wiring connectors come ready to install. They have 16-gauge wires and can be used to connect the taillights, brake lights and turn signals.

Versatile design. Reliable connection. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of these vehicle-trailer connectors. These 4-pin trailer wiring plugs come ready to splice into your existing vehicle and trailer wiring. Durable construction. They feature tabs on the top and bottom for a better grip when plugging in or unplugging.
BrandCURT #ad
ManufacturerCurt Manufacturing #ad
Height2 Inches
Length7 Inches
Weight0.3 Pounds
Width2 Inches
Part Number58050
Model58050
WarrantyLimited Lifetime

5. juneven

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Juneven 6ft 4 Wire 4-Flat Trailer Light Wiring Harness Kit 4 Way Trailer Wire Extension & Wishbone-Style with 18 Gauge White Ground Wire SAE J1128 Rated

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juneven #ad - Sae-certified4-wire flat extension comply with sae j1128 standards for a low voltage primary cable, safely and simplify trailer light installations for use on a low voltage system; covered by a 2 year warranty. Widely adaptabletrailer wire with trailer ends; suitable for all types of trailers including marine boat trailer, ATV trailer, horse trailer, motorcycle trailer, and other cargo utility trailer hitches tow/haul vehicle must have 4-way plug.

Built to lastthis trailer wiring kit with premium insulating silicone housing, worry-free about wiring safety, flexible and durable, tightly connected. Juneven trailer wiringthis trailer wire harness with 6 Foot, 4-Way connectors is include male and female plug to extend current truck to trailer wires.

Juneven trailer wiringthis is a 6 foot male & female 4-flat marine trailer wiring harness with 4-way conductors, 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.
Brandjuneven #ad
ManufacturerJUNEVEN #ad
Height0.48 Inches
Length72 Inches
Width1.56 Inches
Part NumberJUNEVEN-987
ModelJUNEVEN-987

6. ABN

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4ft, ABN Trailer Wire Extension, 4-Way 4-Pin Plug Flat 20 Gauge – Hitch Light Trailer Wiring Harness Extender

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ABN #ad - Package contents: package includes 1 4-foot 1. 2m extension for your convenience. Built to last: heavy-duty 20-gauge wires for strength and longevity; Color-coded for your convenience.

Effortless trailer wiring: use the abn trailer wire extension, 4’ Foot, 4-Way 4-Pin Plug Flat 20 Gauge – Hitch Light Trailer Wiring Harness Extender to extend current truck to trailer wires. No splicing: no need to splice your new wires, simply extend them with this extender. Various applications: 4-way standard flat light connector with trailer ends; For all types of trailers including marine boat trailer, ATV trailer, motorcycle trailer, horse trailer, and other cargo utility trailer hitches tow/haul vehicle must have 4-way plug.
BrandABN #ad
ManufacturerABN #ad
Height7 Inches
Length1.5 Inches
Weight0.2 Pounds
Width2 Inches
Part Number1893
ModelABN 1886

7. Nilight

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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

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Nilight #ad - Standard 4 way flat connector: male plug with 5 wires, female plug with 4 wires. Easily to route into your trailer's wiring system and connect with lights. Wire length: comes with 18awg 25ft male and 4ft female connector wire, both with full ground wire for your use.

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. Withstand sea water, no brittleness, durable to last. Universal application: work perfectly on trailers under and over 80” wide such as marine boat trailer, cargo utility trailer to install trailer lights.

Built to last: employ quality pure copper wire with tin plating for the best current conductivity and anti-oxidation ability, no break, and premium PVC coating for the best anti-corrosion and anti-aging ability. Plug and play, matches with any other standard 4 pin flat plugs. Designed to split at the trailer tongue and run down each side of the trailer to supply power for trailer lights.
BrandNilight #ad
ManufacturerNilight #ad
Part Number10039W
Model10039W
Warranty2 Years Warranty

8. MICTUNING

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MICTUNING Universal 4 Way Flat Y-Splitter Plug and Play Adapter Extension Harness for LED Tailgate Light Bar and Trailer Lights

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MICTUNING #ad - 17. 5" long wiring harness with 9" of each Male Flat 4 Pin Connector and 2 Female Flat 4 Pin Connectors. Play-n-play, fits all types of trailers, Helping to Extend Your Original One Without Splicing New Wires. Premium insulating silicone Housing, Worry-free About Wiring Safety, Super Flexible and Durable. 2-way y-splitter harness, special design to Fit For Trailer LED Lights, Tailgate Light Bars and Other Use. What you get: 1x 4 pin trailer y-splitter, Free Lifetime Technical Support, Plus Friendly Aftermarket Services.
BrandMICTUNING #ad
ManufacturerMICTUNING #ad
Weight0.27 Pounds
Part NumberMIC-4PIN-HARNESS2
Model4333006590

9. SUZCO

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

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SUZCO #ad - 4 wiring instructionthe 4 flat trailer wire is color-coded and bonded wire to easily splice into your trailer's wiring system, no need for splicing wires. It can protect tow vehicle electronics from wiring shorts. 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.

Extends wiring system provides more flexibility. Enough lenght ground wirethis 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. There are instructions for wiring the running light and license plate lights included. Includes a 4-feet trunk connector, splices, and clips.

This trailer wire harness kit is completely sealed for a long corrosion-resistant installation. The trailer side ground wire is about 2ft. Trailer wiring harness features a ground wire. This trailer wire harness kit also can work on an aluminum trailer based on the ground wire. 36' extension includingthis 36foot 4 wire boat trailer wiring extension can conform to the sae j1128 specification. The white grounding wire is so enough long to wiring.
BrandSUZCO #ad
ManufacturerSUZCO #ad
Part NumberSUZCO-TR88
ModelSUZCO-TR88

10. EXERAUO

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EXERAUO Trailer Wiring Kit 4 Flat Trailer Wiring Harness Extension Connector 25ft & 4ft Wishbond Trailer Light Kit 4 Wire Plug Connector for Utility Trailer Lights

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EXERAUO #ad - To make sure our sincere customers have the best buying experience, please contact us, we provide 30-day return/ replacement service. If you are not satisfied with the product, we will refund you unconditionally.

25ft male& 4 ft female trailer wiring extension kit: 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.

4-flat trailer wiring harness: Made of high quality materials and undergoes strict quality assurance to provide lasting performance and reliability. 25 ft 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 corrosion and wiring time.
BrandEXERAUO #ad
ManufacturerHDD #ad
Part NumberTW-2