Boat Wiring Harnesses of 2025
Best Choice1
SouthMarineSouthMarine 6X3-8258A-00 688-8258A-50-00 Main Wiring Harness 16.4FT 10P for Yamaha Outboard Motor 704 Remote Control, 5m
Main highlights- Length: 5m/16.4ft
- Fit Yamaha Outboard Engine 704 Remote Control Box 704-48205-R0-00 704-48205-P1-00 704-48205-P0-00
- Fit OEM part number: 6X3-8258A-00 688-8258A-50
- Engine Position: Outboard
9.8Exceptional
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Value for Money2
LIMICAR15% OffLIMICAR 100-Foot 6-Way Trailer Wiring Harness, 14 Gauge CCA Light Wire Kit for Boats (Red, Blue, Green, Yellow, Brown, White)
Why we love it
Color-coded for easy installation.
Durable with high-quality materials.
Versatile for various vehicle types.
9.6Exceptional
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3
ATQYZLMATQYZLM 22FT 4 Pin 5 Wire Trailer Wiring Harness Protected by Nylon Net Tube, Utility Pure Copper Boat Trailer Wiring Kit for Trailer Tail Light Rewiring, Waterproof 4 Pin 5 Wire Trailer Connector
Why we love it
Corrosion-resistant, durable materials.
Easy, professional-grade installation.
Versatile for multiple trailer types.
9.4Excellent
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4
OyvinyOyviny 4 Pin 5 Wire Trailer Wiring Harness 22FT for Rewiring Both-Side Taillights, Pure Copper Wishbond Trailer Light Kit 4 Way Flat 5 Wire Plug w/Nylon Net Tube Protection
Main highlights- Y-Harness Connector: 4 pin trailer wiring harness adapter features wishbone design, widely fits for rewiring trailer that allows 2 brown wires running left and right taillights simultaneously; No need for splicing other wires
- Wide Application: 4 pin 5 wire trailer connector replacement is designed to match industry-standard 4-way flat sockets, provides a male plug for your trailer and can be used to replace a worn out, broken wire on a wide variety of trailers
- Enough length: 22 feet male 4 flat wire and 2.5 feet Ground wiring is long enough to wire a trailer from the start, provides plenty of extra length for a flexible installation
- Durable Construction: 4 pin flat 5 wire harness kit use thickened PVC wire coating materials for anti-corrosion, pure copper wires for good conductivity, and is well protected by a black nylon net tube, ensure long service life
- Color coded wires: 4 way 5 wire trailer side flat connector equips with color code wiring for a simple installation, you can easily splice into existing trailer wiring to connect the brake lights, turn signals and left and right side taillights
9.3Excellent
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5
Serlainxin10% OffSerlainxin 50Foot 4Pin 5Wire Trailer Wire Harness, Premium Towing Wiring Solution, Extended Length Boat Trailer Wiring Kit, 4-Way Trailer Light Wire Brown/Green/Yellow/White for RV Boat Marine
Main highlights- Wishbone Wire Design: These 4 wire trailer wiring kit split at the trailer tongue and run down each side of the trailer, no need for splicing wires.
- Universal Application: Our trailer wire harness use standard 4 pin flat plug, Universal fits for 4 way trailer light wire replacement, such as utility trailer, boat trailer etc.
- Easy To Install Trailer Wiring Harness Kit: 18 Gauge 4 Color Coded trailer wire helps distinguish the function of each wire.
- 42ft Male Wire & 8ft Female Wire included: These trailer wiring kit can provide enough cable length for trailer lights wire replacement.
- 4 Flat Anti-corrosion 5 Wires: Our trailer wiring harness kit use thickened PVC wire coating materials and copper wire. Can resist aging caused by harsh weather.
9.2Excellent
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6
LIMICARLIMICAR Trailer Wiring Harness Kit, 25ft Trailer Wire with 4 Flat Extension Connector, 4 Pin Flat Wishbond Wiring Light Kit for Utility Boat
9.7 Easy installation9.3 worth the money8.7 materials QualityWhy we love it
Easy installation with color-coded, wishbone style harness.
Perfect length for trailers under or over 80 wide.
High-quality, corrosion-resistant materials ensure durability.
9.1Excellent
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7
OyvinyOyviny 4 Pin 5 Wire Trailer Wiring Harness - 50FT for Rewiring Both-Side Taillights, Pure Copper Wish-Bond Trailer Light Kit With Nylon Net Tube Protection, 4 Way Flat 5 Wire Plug
Main highlights- Y-Harness Connector: 4 pin trailer wiring harness adapter features wishbone design, widely fits for rewiring trailer that allows 2 brown wires running left and right taillights simultaneously; No need for splicing other wires
- Wide Application: 4 pin 5 wire trailer connector replacement is designed to match industry-standard 4-way flat sockets, provides a male plug for your trailer and can be used to replace a worn out, broken wire on a wide variety of trailers
- Enough length: 50 feet male 4 flat wire and 2.75 feet Ground wiring is long enough to wire a trailer from the start, provides plenty of extra length for a flexible installation
- Durable Construction: 4 pin flat 5 wire harness kit use thickened PVC wire coating materials for anti-corrosion, pure copper wires for good conductivity, and is well protected by a black nylon net tube, ensure long service life
- Color coded wires: 4 way 5 wire trailer side flat connector equips with color code wiring for a simple installation, you can easily splice into existing trailer wiring to connect the brake lights, turn signals and left and right side taillights
8.9Very Good
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8
WALSIO4 Pin 5 Wire Trailer Wiring Harness, 22FT Trailer Wiring Harness Kit, Boat Trailer Wiring Harness, 5 Wire 4 Pin Flat Trailer Connector, for Connection of Tail Lights, Brake Lights and Turn Signals
Main highlights- Y-Harness Connector: The 4-pin trailer harness adapter has a Y-shaped design, which allows it to split from different sides of the trailer.Having the Y at the front eliminates the need to have to run a wire across the axle like most others
- High Quality Materials:The trailer wiring harness kit is made of 18 AWG pure copper wire, the exterior is made of thickened PVC wire coating material to ensure safety your safety, and the outermost layer is reinforced with black braided nylon mesh tubing. Durable and well insulated, our plugs come with a protective cover waterproof and dustproof to ensure reliable and long-lasting performance in all weather conditions
- Color-coded wires: Color-coded wires make installation simple and straightforward, even for those without basic wire knowledge, 4 pin 5 wire trailer connector replacement is designed to match industry-standard 4-way flat sockets, provides a male plug for your trailer and can be used to replace a worn out, broken wire on a wide variety of trailers
- Adequate Length: The 22ft overall length and 2.5ft ground wire provides enough length for flexible installation and trailer rewiring.5 wire trailer wire is suitable for marine boat trailers, horse trailers, ATV trailers, and already other trailers with 4-way plugs
- 4 Pin 5 Wire Trailer Wiring Harness: Our trailer wiring harness kit has 5 wires to save you the hassle of extra wiring, providing enough wire to connect all the necessary points without the need for extensions or complicated splices. trailer wiring kit fits trailers up to 80 inches and over 80 inches in width
8.7Very Good
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9
LIMICARLIMICAR 100FT 14 Gauge Trailer Wiring Harness Kit - 4-Way Bonded, Color-Coded Boat Trailer Wiring for Lights
Main highlights- Widely Applications: The 100ft 14 gauge trailer wire can used in a trailer, truck, off-road, horse trailer, ATV trailer and car coasting. Any problems, please feel free to contact with us.
- Color Coded Wires Wishbone Style Trailer Wiring: 4 flat trailer wire is color-coded and bonded wire for easily installation. White wire: Ground (Negative). Brown wire: Tail Lights. Yellow wire: Driver Side Stop/Turn Lights. Green wire: Passenger Side Stop/Turn Lights.
- 14-Gauge, 60 Volts Trailer Wiring Harness: The 4-wire construction can be used for either 4-way flat or 4-way round plugs and sockets. The white ground wire adopts a 14 wire gauge to reduce corrosion and ensure safe installation.
- 100FT Copper Clad Aluminum Trailer Wiring Harness Kit: 14-Gauge bonded trailer wiring includes 100 foot of color-coded wire for rewiring a trailer or splicing in a connector. LIMICAR Trailer Wiring Harness suitable for trailers, trucks, and more.
- 100 Foot Per Spool/Roll Boat Trailer Wiring Kit: Complying with SAE J1128 standards and come with high-quality PVC insulating tape. Constructed from the highest quality materials and superior quality guaranteed.
8.4Good
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10
DOAUTO14% OffDOAUTO 100Foot Bonded 4-Way Trailer RV Camper Towing Boat Wiring Harness Wire Spool, Primary 4-Wire 14 Gauge Copper Wire, Ideal for All Basic Needs(Green, Yellow, Brown, White), Multi
Main highlights- ●The copper clad aluminum 4 wire bonded has printed functions on the wire and is great for all your basic wiring needs. Standard 4-way for rewiring trailers or similar applications. Bonded Parallel Trailer Wire is designed especially for RVs, and boat utility trailers.
- ●It includes 14 gauge on the ground and 14 gauge on all others. If you have any questions, please contact us, we will reply as soon as possible within 24 hours.
- ●Copper Clad Aluminum 4-wire bonding, 4 wires are the same length (100ft). This is designed for general trailer rewiring, bonded to form parallel multi-conductor cables. This spool of 14-gauge bonded wiring includes 100 foot of color-coded wire for rewiring a trailer or splicing in a connector. The 4-wire construction can be used for either 4-way flat or 4-way round plugs and sockets.
- ●Color-coded wires (green, yellow, brown, white) for easier splicing, wire spool can be divided into single wires for use, standard 4-way wire for rewiring a trailer or a similar application. Meets or exceeds S.A.E. J1128 specifications. Trailer Wire is resistant to grease, oil, and acids.
- ●CCA 100 foot per spool/roll. The trailer cable wire has a black jacket and 4 conductors that are green, white, brown, and yellow. It has a 14-gauge, 60 volts. All copper strand core within general purpose thermoplastic (GPT) insulation The thermoplastic insulation operates satisfactorily between extreme temperatures.
8.3Good
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