Top 10 Trailer Light Harness – Towing Hitch Wiring

As an Amazon Associate I earn from qualifying purchases.



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 - Extends wiring system provides more flexibility. 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. Trailer wiring harness features a ground wire. 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.

The white ground wire is made of 18-gauge, which is corrosion resistant terminal. Extension includingthis 25foot 4 wire boat trailer wiring extension can conform to the sae j1128 specification. 4 wiring instructionthere are instructions for wiring the running light and license plate lights included. The trailer side ground wire is about 2ft. 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.

The white grounding wire is so enough long to wiring. It can protect tow vehicle electronics from wiring shorts. 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 different color wires are clearly identified as each wire's function, so you can make the installation safe and straight-forward.
BrandSUZCO #ad
ManufacturerSUZCO #ad
Weight0.02 Pounds
Part NumberSUZCO888888888

2. Curt Manufacturing


F-550 Super Duty, CURT 55243 Vehicle-Side Custom RV Blade 7-Pin Trailer Wiring Harness, F-350, F-450, Fits Select Ford F-250

Curt Manufacturing #ad - Made in USA. Comes with a dust cover to keep your connector clean when not in use. Simple plug and play design eliminates the need for cutting or splicing. Includes converter where needed. 7-way flat output.
BrandCurt Manufacturing #ad
ManufacturerCurt Manufacturing #ad
Height4 Inches
Length9 Inches
Weight1.15 Pounds
Width8 Inches
Part Number55243
WarrantyOne-Year Limited Warranty

3. ACDelco


ACDelco Professional TC184 Inline to Trailer Wiring Harness Connector

ACDelco #ad - Professional, premium aftermarket replacement. Provides the performance and dependability you expect from ACDelco. Manufactured to meet expectations for fit, form, and function.
BrandACDelco #ad
ManufacturerACDelco #ad
Height3.6 Inches
Length4.1 Inches
Weight0.2 Pounds
Width4.1 Inches
Part NumberTC184
Warranty24 Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please see for more details.



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

MICTUNING #ad - 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, gives you more convenience for wiring left/right turn light, reverse light, brake signal lamp, tail light, etc.

Best sealing performance - 4 open & 4 close rubber fitted grommets for option based on your wiring needs, 4x Open Grommets, making the whole junction box waterproof, dustproof and corrosion resistant. 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.

Satisfaction defender: buy with confidence, worry-free 24-month Warranty, We stand behind our products all the time, 30 days Money Back/Replacement, Within 4 Hours Friendly Response´╝îLifetime Customer Support. Excellent construction - adopted flameproof ABS junction box and good conductivity copper with solid cord, trailers, stronger and rugged, caravans, campers, perfect for RVs, food vans and other towed vehicles. What you'll get:2 year mictuning warranty and lifetime best customer service, 1 x 7-Way Trailer Plug with Junction Box, 4x Close Grommets.
ManufacturerMICTUNING #ad
Height1 Inches
Length80 Inches
Weight2.97 Pounds
Width2 Inches
Part NumberMIC-TWB-031
Warranty2 Yr Warranty



LINKITOM 4-Way Trailer Wiring Harness Kits, for Utility Boat Trailer Lights, 25-Foot 18 AWG Color Corrosion Resistant Coded Wires with 4 Pin Flat Plug

LINKITOM #ad - Installation easy through the 4-way connectors. 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. 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.
ManufacturerLINKITOM #ad
Part NumberLK-TCX4P



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 - 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. Wishbone style wiring setup- wishbone design makes it easier to wire to the taillights; simplifies installation process. 25' male & 4' female included- our 4-way trailer wiring harness includes both the male and female sides for added value. 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.
ManufacturerONLINE LED STORE #ad
Height2.5 Inches
Length7.5 Inches
Weight0.95 Pounds
Width3.5 Inches
Part NumberACCEPSCBL0105



12V All LED , Left and Right Waterproof Submersible for Trailers, Boat Trailer Truck Marine Camper RV Snowmobile, MaxxHaul 70205 Trailer Light Kit

MAXXHAUL #ad - Corrosion resistant housing. Includes 23-foot wiring harness with UV coated jackets. For trailers less than 80 Inch wide. Product type: Lighting and Electrical. High visibility LED taillights last longer than standard incandescent lights. Includes 23 and 4 foot 4-pole color coded wiring harness. 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.
ManufacturerMaxxHaul #ad
Height3.7 Inches
Length12 Inches
Weight2.6 Pounds
Width11.3 Inches
Part Number70205
WarrantyPlease contact seller for manufacturer's warranty



Including Sport , CURT 55354 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Black, Fits Select Jeep Cherokee

CURT #ad - To promote long-lasting use and weather resistance, this 4-pole trailer lighting wire harness comes with a rubber dust cover. 4-way trailer light wiring is popular on a variety of trailers, adding versatile towing options for your vehicle.

This plug-in 4-flat trailer wiring can be used to connect trailer tail lights, brake signal lights and turn signals. This aftermarket, vehicle-trailer wiring harness is designed for select years of the Jeep Cherokee, including Sport. This type of circuitry generates less heat, optimal light intensity and durable performance. No cutting! no splicing! this trailer wiring harness kit plugs into existing factory wiring on your vehicle and equips it with a standard, rear 4-pin trailer wiring connector for plugging in and towing a trailer.

Reliable power. It easily fits onto the 4-way flat connector when not in use, protecting it against the outdoor elements. Vehicle-specific. Easy to install. This 4-way trailer wiring harness is built with surface mount technology. Dust cover. Standard connector.
BrandCURT #ad
ManufacturerCurt Manufacturing #ad
Height9 Inches
Length4 Inches
Weight0.64 Pounds
Width3 Inches
Part Number55354
WarrantyOne-Year Limited Warranty

9. Hopkins Manufacturing


Hopkins 48925 Tail Light Converter with 4 Wire Flat Extension

Hopkins Manufacturing #ad - Converter mounts in trunk out of harm's way. Powers up to 2. 1 amps per output. Features a double-molded weatherproof design and corrosion resistant terminals. 72 inches in length. Electronic taillight converter adapts tow vehicles taillight system to the trailer's.
BrandHopkins Manufacturing #ad
ManufacturerHopkins Towing Solution #ad
Height2.38 Inches
Length6.88 Inches
Weight0.5 Pounds
Width3.75 Inches
Part Number48925
WarrantyHopkins warrants all products to be free from defects in material and workmanship, under normal use and service, for a peirod of 90 days from the date of original purchase, with the exception of the Brake-Force and Impulse brake control items, which are warranted to be free from defects in material and workmanship, under normal use and service, for the original buyer's lifetime



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, food truck, RV, or tow truck. Exceptional versatility - perfect for trailers with brakes, and any other auxiliary power needs such as charging trailer battery, reverse lights, powering interior lights, keeping the refrigerator cool, etc.

10-14 awg, high quality, double prong, copper terminals ensure a solid connection every time. Safe and secure connection - no more dangerous flickering lights or malfunctioning equipment. Life proof - commercial grade, kink free PVC sheathing is waterproof and corrosion resistant for years of reliable service. The locking plug end features finger lugs for easy removal. Easy to use - cable has been stripped and color coded to simplify the installation.
ManufacturerONLINE LED STORE #ad
Height2.76 Inches
Length9.45 Inches
Weight2.38 Pounds
Width8.67 Inches
Part NumberACCEPSCBL3021