Top 9 Trailer Wiring Harness 4 Flat – Towing Hitch Wiring

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1. 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 - Ready to install. The 4-pin wiring design matches industry-standard 4-way flat connectors and is compatible with a wide variety of trailers. Easy grip. Equipped with color-coded wires, these 4-prong trailer wiring connectors come ready to install.

These vehicle-trailer connectors make great replacement 4-flat wiring plugs and sockets. Versatile design. They feature tabs on the top and bottom for a better grip when plugging in or unplugging. The 72-inch wire loop provides plenty of extra length for a flexible installation. These 4-pin trailer wiring plugs come ready to splice into your existing vehicle and trailer wiring. 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.

Durable construction. They have 16-gauge wires and can be used to connect the taillights, brake lights and turn signals. Reliable connection. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of these vehicle-trailer connectors.
BrandCURT #ad
ManufacturerCurt Manufacturing #ad
Height2 Inches
Length7 Inches
Weight0.3 Pounds
Width2 Inches
Part Number58050
Model58050
WarrantyLimited Lifetime

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. 18 awg color coded wires- color coded 18 awg wires clearly identify each wire's function; makes installation safe and straight-forward. 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.
BrandONLINE LED STORE #ad
ManufacturerONLINE LED STORE #ad
Height2.5 Inches
Length7.5 Inches
Weight0.95 Pounds
Width3.5 Inches
Part NumberACCEPSCBL0105
Model4336325634

3. CURT

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

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CURT #ad - It features tabs on the top and bottom for a better grip when plugging into your vehicle or unplugging. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of this trailer plug.

Easy grip. Ready to install. Reliable connection. The 12-inch wire lead provides extra length for an easy installation. 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. Durable construction. This 4-pin trailer wiring plug comes ready to splice into your existing trailer wiring. This trailer connector makes a great replacement 4-flat trailer wiring connector.

Versatile design. The 4-pin wiring design matches industry-standard 4-way flat sockets and can be used on a wide variety of trailers. It has 16-gauge wires and can be used to connect the taillights, brake lights and turn signals. Equipped with blunt-cut, color-coded wires, this 4-prong trailer wiring plug comes ready to install.
BrandCURT #ad
ManufacturerCurt Manufacturing #ad
Height2 Inches
Length7 Inches
Weight0.05 Pounds
Width2 Inches
Part Number58030
Model58030
WarrantyLimited Lifetime

4. SUZCO

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

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SUZCO #ad - Item typethis 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.

It can protect tow vehicle electronics from wiring shorts. Trailer wiring harness features a ground wire. The white ground wire is made of 18-gauge, which is corrosion-resistant terminal. This trailer wire harness kit is completely sealed for a long corrosion-resistant installation. 4-way connectors & fitmentyou can install the trailer wire so quickly and easily through the 4-way connectors. The white grounding wire is so enough long to wiring.

Includes a 4-feet trunk connector, splices, and clips. There are instructions for wiring the running light and license plate lights included. 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. 36' extension includingthis 36foot 4 wire boat trailer wiring extension can conform to the sae j1128 specification. This trailer wire harness kit also can work on an aluminum trailer based on the ground wire.
BrandSUZCO #ad
ManufacturerSUZCO #ad
Part NumberSUZCO-TR88
ModelSUZCO-TR88

5. 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 - 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. This trailer wire harness kit is completely sealed for a long corrosion-resistant installation.

Most standard light duty trailers will use a 4-pole flat connector. The white grounding wire is so enough long to wiring. 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. Not compatible with motorcycle trailer wiring, and you could confirm the fitment to be not the wrong item before ordering. Trailer wiring harness features a ground wire. 4 wiring instructionthere are instructions for wiring the running light and license plate lights included.

Includes a 4-feet trunk connector, splices, and clips. 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. 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. Extends wiring system provides more flexibility. It can protect tow vehicle electronics from wiring shorts.
BrandSUZCO #ad
ManufacturerSUZCO #ad
Weight0.02 Pounds
Part NumberSUZCO888888888
Model4350429910

6. Miady

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

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Miady #ad - We provide 24*7 friendly customer support and also back our products for 18 months. 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. Please feel free to contact us. 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 . Long enough: the miady 25' trailer wiring harness gives you the extra length, just need to extend current truck to trailer wires. 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.

No need to splice your new wires, simply extend them with this extender. Simplify the installation process to save more time. 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.
BrandMiady #ad
ManufacturerMiady #ad
Part NumberTWH4M

7. ABN

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

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ABN #ad - Package contents: package includes 1 20-foot 6. 1m trailer wire harness extension to suit your needs. Use anywhere: 4-way standard flat trailer light wire kit with trailer connector ends; Your existing tow/haul vehicle must have 4-way plug; Use as a horse trailer hitch wiring adapter, utility trailer wiring kit, or marine boat trailer wire harness extender.

Built to last: heavy-duty 20-gauge wires for strength and longevity; Color-coded 4 way trailer wire lengths for easy identification. No splicing: no need to splice your new wires, simply extend them with this trailer wiring plug. Effortless trailer wiring: use the abn 4 wire trailer connector 20-Foot Trailer Wiring Extension to extend current truck to trailer wires; 1 ground wire, 1 running lights wire, 2 left/right turn and stop signal wires; Not intended for reverse lights.
BrandABN #ad
ManufacturerABN #ad
Height8.5 Inches
Length2 Inches
Width2.5 Inches
Part Number1923
ModelABN 1886

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 - Play-n-play, fits all types of trailers, Helping to Extend Your Original One Without Splicing New Wires. 17. 5" long wiring harness with 9" of each Male Flat 4 Pin Connector and 2 Female Flat 4 Pin Connectors. 2-way y-splitter harness, special design to Fit For Trailer LED Lights, Tailgate Light Bars and Other Use. Premium insulating silicone Housing, Worry-free About Wiring Safety, Super Flexible and Durable. 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. 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. Universal application: work perfectly on trailers under and over 80” wide such as marine boat trailer, cargo utility trailer to install trailer lights.

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