Top 10 Best Boat Trailer Wiring Harness [2022]

Last Update:

Our team studied on 47757 reviews available online for Boat Trailer Wiring Harness, chose the finest ones and prepared Boat Trailer Wiring Harness Reviews for you. It was very difficult to shortlist the ideal Boat Trailer Wiring Harness from thousands of products online. However, We tried to make sure that you get only the Best Boat Trailer Wiring Harness from our suggestions. Check our listings-:

Best Boat Trailer Wiring Harness

Comparison Chart for Best Boat Trailer Wiring Harness

47757 number of user reviews were available online, which we scanned to find the Boat Trailer Wiring Harness. Hopefully, our experts suggestions available in this article will help you find your ideal choice.

NoProductScoreAction
1Hopkins 48265 30' 4 Wire Flat Trailer Side Y-Harness Connector9.8Buy On Amazon
2SUZCO 36 Ft 4 Wire 4-Flat Trailer Light Wiring Harness Extension Kit9.8Buy On Amazon
3MICTUNING Heavy Duty 7 Way Plug Inline Trailer Cord with 7 Gang Junction Box - 8 Feet9.4Buy On Amazon
4SUZCO 25 Foot 4 Wire 4-Flat Trailer Light Wiring Harness Extension Kit9.2Buy On Amazon
5Nilight - 10039W 4 Pin Flat Trailer Wiring Harness Kit 18AWG 25Feet Male 4Feet Female Wishbone-Style Wiring Harness Extension kit for Utility Boat Trailer Lights9.2Buy On Amazon
64 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 Kits9Buy On Amazon
7Donepart Trailer Wiring Harness 4 Flat 25ft Trailer Wiring Extension Kit9Buy On Amazon
8Miady 25ft Trailer Wiring Harness with 4 Flat Connector8.4Buy On Amazon
9LIMICAR LED Trailer Lights Wire Kit8.4Buy On Amazon
10LINKITOM 4-Way Trailer Wiring Harness Kits8.2Buy On Amazon

1. Hopkins 48265 30′ 4 Wire Flat Trailer Side Y-Harness Connector

  • 30 feet in length
  • Wiring kit for maintaining or re-wiring your trailer
  • Wishbone design allows 2 brown wires to be run to each taillight
  • Corrosion resistant terminals
  • Easy to use and install

2. SUZCO 36 Ft 4 Wire 4-Flat Trailer Light Wiring Harness Extension Kit

  • ITEM TYPE】This 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.
  • 36′ EXTENSION INCLUDING】This 36foot 4 wire boat trailer wiring extension can conform to the SAE J1128 specification.
  • ENOUGH LENGHT GROUND WIRE】This 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.
  • 4-WAY CONNECTORS & FITMENT】You can install the trailer wire so quickly and easily through the 4-way connectors.
  • 4 WIRING INSTRUCTION】The 4 flat trailer wire is color-coded and bonded wire to easily splice into your trailer’s wiring system, no need for splicing wires.

3. MICTUNING Heavy Duty 7 Way Plug Inline Trailer Cord with 7 Gang Junction Box – 8 Feet

  • 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.
  • 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, brake signal lamp, reverse light, tail light, etc.
  • EXCELLENT CONSTRUCTION – adopted flameproof ABS junction box and good conductivity copper with solid cord, stronger and rugged, perfect for RVs, trailers, campers, caravans, food vans and other towed vehicles.
  • 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.
  • BEST SEALING PERFORMANCE – 4 open & 4 close rubber fitted grommets for option based on your wiring needs, making the whole junction box waterproof, dustproof and corrosion resistant.

4. SUZCO 25 Foot 4 Wire 4-Flat Trailer Light Wiring Harness Extension Kit

  • ITEM TYPE】This is a 25 foot male & female 4-flat marine trailer wiring harness with 4-way conductors and a white ground wire, made of 18-gauge wire, designed to split at the trailer tongue and run down each side of the trailer.
  • EXTENSION INCLUDING】This 25foot 4 wire boat trailer wiring extension can conform to the SAE J1128 specification.
  • ENOUGH LENGHT GROUND WIRE】This 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.
  • 4-WAY CONNECTORS & FITMENT】You can install the trailer wire so quickly and easily through the 4-way connectors.
  • 4 WIRING INSTRUCTION】There are instructions for wiring the running light and license plate lights included.

5. 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

  • Wire Length: Comes with 18AWG 25ft male and 4ft female connector wire, both with full ground wire for your use.
  • Built To Last: Employ quality pure copper wire with tin plating for the best current conductivity and anti-oxidation ability, and premium PVC coating for the best anti-corrosion and anti-aging ability.
  • Standard 4 Way Flat Connector: Male plug with 5 wires, female plug with 4 wires.
  • 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.
  • Universal Application: Work perfectly on trailers under and over 80” wide such as marine boat trailer, cargo utility trailer to install trailer lights.

6. 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

  • 25′ MALE & 4′ FEMALE INCLUDED- Our 4-way trailer wiring harness includes both the male and female sides for added value.
  • 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.
  • 18 AWG COLOR CODED WIRES- Color coded 18 AWG wires clearly identify each wire’s function; makes installation safe and straight-forward.

7. Donepart Trailer Wiring Harness 4 Flat 25ft Trailer Wiring Extension Kit

  • 25FT & 4FT Trailer Wiring Kit: This wiring harness is a complete kit for wiring trailer stop, turn and running lights.
  • Wishbone Design: Come with 2 tail light wire includes male and female 4-flat connectors, split for simple wiring.
  • Wire Diagram: Color coded wires help with installation.
  • Function: Powers tail light, stop light, turn signals, and all running lights, Green – passenger side stop/turn.
  • Suitable for trailers under and over 80″ in width.

8. Miady 25ft Trailer Wiring Harness with 4 Flat Connector

  • Long Enough: The Miady 25′ Trailer Wiring Harness gives you the extra length, just need to extend current truck to trailer wires.
  • 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.
  • 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.
  • 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) .

9. LIMICAR LED Trailer Lights Wire Kit

  • BRIGHT & ENERGY-EFFICIENT: Advanced LED combination tail lights kit with better heat distribution, no glare, much brighter and more energy-efficient than halogen bulbs.
  • PACKAGE INCLUDES: 12V LED trailer lights kit includes 2 combination stop, tail, turn signal lights, 2 amber clearance lights, wiring harness, license plate bracket and mounting hardware.
  • SEALED & WATERPROOF: Adopts welding technology for better waterproof performance.
  • PRACTICAL FUNCTIONS: Compliant with DOT standards.
  • UNIVERSAL FIT: Perfect replacement tail lights for towing vehicles equipped with DC 12V power supply, such as boat, trailer, truck, snowmobile, RV, camper, tractors, canoes, truck, trailer and other special vehicles with a width of 80 inches (more or less).

10. LINKITOM 4-Way Trailer Wiring Harness Kits

  • 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
  • Installation easy through the 4-way 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.

How To Choose The Best Boat Trailer Wiring Harness

Does the thought of finding a great Boat Trailer Wiring Harness stress you out? Has your mind been juggling between choices when it comes to buying Boat Trailer Wiring Harness in general, specifically regarding which model to choose?
If that’s the case, know that you’re not alone. Many people find it tough to buy the perfect Boat Trailer Wiring Harness for themselves. We understand the stress associated with the buying process!

Since you’re here, you are obviously curious about Boat Trailer Wiring Harness. You’ve been bombarded with information, so you need to find a reputable source with credible options before you make any decisions on which product would be best for your needs.

There are many sources that’ll provide you with that information- buying guides or ratings websites, word-of-mouth testimonials from friends or family members, online forums where users share their personal experiences, product reviews specifically found all over the internet and YouTube channels. Only thorough research will ensure that you get the right product.

But that’s not always easy, right? That's why we've taken time to compile a list of the best Boat Trailer Wiring Harness in today's market, on your behalf, so that there will be no more worries for you.

How did we come up with the list, you ask? How did we create this buying guide?

  • First, our algorithms collected as much information available about these products from trusted sources.
  • We employed both Artificial Intelligence and large data volume to validate all collected information.
  • Then our AI ranked them on their quality-to-price ratio using industry-standard criteria that let us pick the best Boat Trailer Wiring Harness currently on the market!
The products aren’t chosen randomly. We consider several criteria before assembling a list. Some of the criteria are discussed below-

  1. Brand Value: What happens when you go for a not-so-reputable brand just because the price seems cheap? Well, the chance of getting a short-lasting product goes higher. That’s because the renowned brands have a reputation to maintain, others don’t.


Top Boat Trailer Wiring Harness brands try to offer some unique features that make them stand out in the crowd. Thus hopefully, you’ll find one ideal product or another in our list.

  1. Features: You don’t need heaps of features, but useful ones. We look at the features that matter and choose the top Boat Trailer Wiring Harness based on that.
  2. Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products of higher specifications, but with the right balance.
  3. Customer Ratings: The hundreds of customers using the Boat Trailer Wiring Harness before you won’t say wrong, would they? Better ratings mean better service experienced by a good number of people.
  4. Customer Reviews: Like ratings, customer reviews give you actual and trustworthy information, coming from real-world consumers about the Boat Trailer Wiring Harness they used.
  5. Seller Rank: Now, this is interesting! You don’t just need a good Boat Trailer Wiring Harness, you need a product that is trendy and growing in sales. It serves two objectives. Firstly, the growing number of users indicates the product is good. Secondly, the manufacturers will hopefully provide better quality and after-sales service because of that growing number.
  6. Value For The Money: They say you get what you pay for. Cheap isn’t always good. But that doesn’t mean splashing tons of money on a flashy but underserving product is good either. We try to measure how much value for the money you can get from your Boat Trailer Wiring Harness before putting them on the list.
  7. Durability: Durability and reliability go hand to hand. A robust and durable Boat Trailer Wiring Harness will serve you for months and years to come.
  8. Availability: Products come and go, new products take the place of the old ones. Probably some new features were added, some necessary modifications were done. What’s the point of using a supposedly good Boat Trailer Wiring Harness if that’s no longer continued by the manufacturer? We try to feature products that are up-to-date and sold by at least one reliable seller, if not several.
  9. Negative Ratings: Yes, we take that into consideration too! When we pick the top rated Boat Trailer Wiring Harness on the market, the products that got mostly negative ratings get filtered and discarded.
These are the criteria we have chosen our Boat Trailer Wiring Harness on. Does our process stop there? Heck, no! The most important thing that you should know about us is, we're always updating our website to provide timely and relevant information.

Since reader satisfaction is our utmost priority, we have a final layer of filtration. And that is you, the reader! If you find any Boat Trailer Wiring Harness featured here Incorrect, irrelevant, not up to the mark, or simply outdated, please let us know. Your feedback is always welcome and we’ll try to promptly correct our list as per your reasonable suggestion.

Leave a Comment