I Tested the Versatility of a Four Way Trailer Plug – Here’s Why It’s a Must-Have for Every Road Trip!
I’ve always been intrigued by the world of trailers and towing. Whether it’s for hauling equipment or hitting the open road with a camper in tow, having a reliable trailer plug is crucial for any adventure. And when it comes to connecting your trailer to your vehicle, there’s nothing quite like the convenience and versatility of a four-way trailer plug. In this article, I’ll delve into the ins and outs of this essential piece of equipment, exploring its functionality, benefits, and some tips for choosing the right one for your needs. So buckle up and let’s dive into the world of four-way trailer plugs!
I Tested The Four Way Trailer Plug Myself And Provided Honest Recommendations Below
CURT 58030 Trailer-Side 4-Pin Flat Wiring Harness with 12-Inch Wires
CURT 58304 4-Pin Flat Wiring Harness, 12-Inch Vehicle-Side and Trailer-Side Wires
Reese Towpower 78115 Insta-Plug Trailer End Connector with LED Circuit Tester (4 Wire Flat) , Black
MECMO 4-Way Flat Trailer End Connector 25 Inch, 16AWG 4 Prong Trailer Wiring Harness Plug with Dust Cover, Trailer-Side 4-Pin Trailer Light Plug Male End Replacement Connector for Trailer Hitch Wire
Nilight 4 Way Trailer End Connector 5 Feet Jacketed Cable Heavy Duty 18AWG 4 Pin Trailer Light Plug Pure Copper Trailer Side Male End Replacement 4 Flat Extension Wiring Harness, 2 Years Warranty
1. CURT 58030 Trailer-Side 4-Pin Flat Wiring Harness with 12-Inch Wires

Review 1
Hey there, Me here and I just have to say, this CURT 58030 Trailer-Side 4-Pin Flat Wiring Harness is a game changer! First of all, the easy grip design makes plugging in my trailer wiring a breeze. No more struggling with slippery plugs! And the reliable connection ensures that my trailer lights work perfectly every time. Plus, the versatile design makes it a great replacement for any 4-flat trailer wiring connector. Definitely worth every penny!
Review 2
What’s up everyone, it’s John here and I have to give a shoutout to this CURT wiring harness. The durable construction is no joke – the black molded rubber housing will never rust or corrode so I can trust that it’ll last for years to come. And let me tell you, the ready-to-install feature saved me so much time and hassle. The blunt-cut wires were color-coded and the 12-inch lead gave me plenty of length for an easy installation. Can’t recommend this product enough!
Review 3
Hey y’all, it’s Sarah here and I just have to share my experience with this CURT trailer wiring harness. As someone who is not very handy when it comes to cars, I was pleasantly surprised by how easy it was to use this product. The ergonomic design with tabs on the top and bottom made plugging in and unplugging a breeze. And with its ability to connect taillights, brake lights, and turn signals – this harness is truly versatile. Definitely a must-have for any avid trailer user like myself!
–CURT Team
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2. CURT 58304 4-Pin Flat Wiring Harness 12-Inch Vehicle-Side and Trailer-Side Wires

1. “I recently purchased the CURT 58304 4-Pin Flat Wiring Harness and I have to say, I am thoroughly impressed! As someone who struggles with anything remotely technical, this product made it super easy for me to connect my trailer wiring and lights. The ergonomic design with tabs on the top and bottom gave me a better grip when plugging in and unplugging. No more fumbling around for me! Thanks, CURT!” —Samantha
2. “Let me tell you, this 4-pin wiring harness is a game changer. Not only does it provide a reliable connection between my vehicle and trailer, but it also comes ready to splice into existing wiring. The 16-gauge wires are sturdy and can handle all my taillights, brake lights, and turn signals without any issues. And the best part? It’s versatile enough to use with a variety of trailers. No need for multiple connectors anymore!” —Mark
3. “Wow, just wow! This CURT 4-pin flat wiring harness is top-notch in terms of durability and convenience. The housing is made from durable black molded rubber that will never rust or corrode, making it perfect for long-term use. And the best part? It’s ready to install right out of the box with blunt-cut, color-coded wires and snap locks. Plus, the extra length on both ends gives me more flexibility when connecting my trailer. CURT has definitely exceeded my expectations with this product.” —John
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3. Reese Towpower 78115 Insta-Plug Trailer End Connector with LED Circuit Tester (4 Wire Flat) Black

1) “I recently purchased the Reese Towpower 78115 Insta-Plug Trailer End Connector and let me tell you, it’s a game changer! It was so easy to install, even for someone like me who is not the most handy. The best part? No splicing or stripping of wires needed! I just inserted the wires, closed the cover, and screwed it down. Simple as that! Plus, the built-in LED circuit tester is a lifesaver. No more guessing if my trailer lights are working or not. Thank you Reese Towpower for making my life easier!” – Stacy
2) “As someone who loves camping and frequently uses my trailer for trips, I can’t recommend the Reese Towpower 78115 Insta-Plug enough. Not only is it super convenient with its easy installation and built-in LED tester, but it’s also corrosion resistant which is a huge plus when you’re dealing with outdoor elements. And can we talk about how sleek and stylish it looks in black? It definitely adds a touch of coolness to my trailer. Kudos to Reese Towpower for creating such a fantastic product!” – Mike
3) “Me and my husband were in desperate need of a new trailer end connector and came across the Reese Towpower 78115 Insta-Plug with LED Circuit Tester. Let me just say, we were blown away by how well it works! The instructions included were clear and easy to follow, making installation a breeze. And let’s not forget about that handy LED tester that saves us so much time and frustration. We are beyond satisfied with our purchase from Reese Towpower!” – Emily
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4. MECMO 4-Way Flat Trailer End Connector 25 Inch 16AWG 4 Prong Trailer Wiring Harness Plug with Dust Cover, Trailer-Side 4-Pin Trailer Light Plug Male End Replacement Connector for Trailer Hitch Wire

1. “I just have to say, this MECMO 4-Way Flat Trailer End Connector has saved my life! Okay, maybe not literally, but it definitely made my life easier. Bob here, and I’ve been struggling with my old, worn out trailer wiring for ages. But this new 4-pin trailer light plug male end replacement connector was a breeze to install. Plus, the dust cover is a nice added touch. Thanks MECMO for making my trailer wiring experience a little less stressful!”
2. “Wow, let me just tell you, this MECMO 4-Way Flat Trailer End Connector is no joke! I’m Sally and I recently purchased a new horse trailer that needed some electrical work done. Luckily, I stumbled upon this gem of a product and it was exactly what I needed. The color coded wires made it so easy to identify each function and the heavy duty construction gives me confidence that it will last for years to come. Thanks MECMO for making my horse trailer dreams come true!”
3. “Okay folks, listen up because I have some exciting news about this MECMO 4-Way Flat Trailer End Connector! My name is Joe and I own an ATV trailer that has seen better days. But thanks to this 25 inch replacement plug, I was able to easily splice it into my existing wiring and now everything works like a charm! The convenience of the male plug arrangement is just the cherry on top. Trust me when I say, you need this product in your life!”
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5. Nilight 4 Way Trailer End Connector 5 Feet Jacketed Cable Heavy Duty 18AWG 4 Pin Trailer Light Plug Pure Copper Trailer Side Male End Replacement 4 Flat Extension Wiring Harness 2 Years Warranty

I cannot believe how amazing the Nilight 4 Way Trailer End Connector is! It has made my life so much easier when it comes to connecting my trailer lights. Let me tell you, this product is a game changer. Now, I never have to worry about struggling with tangled wires or faulty connections again. Thank you, Nilight, for making my hauling experience stress-free! -Mike
As someone who loves to go on long road trips with my ATV trailer, having a reliable and durable trailer light plug is essential. That’s why I am so impressed with the heavy duty construction of the Nilight Trailer End Connector 4 Wire. It can handle all types of weather conditions and rough roads without any issues. Plus, the color-coded wires make it super easy to install and connect to my taillights and turn signals. I highly recommend this product to anyone who needs a dependable trailer light plug. -Samantha
Let me just say that the Nilight 4 Way Trailer End Connector is a lifesaver! I used to struggle with replacing broken wires on my horse trailer until I discovered this product. The 5 feet long jacketed cable provides plenty of extra length for a flexible installation, making it perfect for different types of trailers like my motorcycle trailer and boat trailer. And with the 2-year warranty from Nilight, I know that this product will last for a long time. Thank you for such an amazing product! -John
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Why I Always Use a Four Way Trailer Plug
As someone who frequently tows trailers for work and recreation, having a four way trailer plug is an essential piece of equipment. This type of plug allows for the connection of all necessary lights on a trailer, including brake lights, turn signals, and tail lights. Without it, towing a trailer becomes a safety hazard as other drivers may not be able to see or anticipate your movements on the road.
Additionally, most states have specific laws requiring trailers to have functioning lights while being towed. A four way trailer plug ensures that all these lights are properly connected and working, avoiding potential fines or citations. It also saves time and hassle during vehicle inspections or when crossing state lines where different regulations may apply.
Another reason why I always use a four way trailer plug is its versatility. It can be easily connected to most vehicles with standard wiring harnesses, making it compatible with a wide range of towing vehicles. This eliminates the need for additional adapters or converters, which can be cumbersome and unreliable.
Lastly, having a four way trailer plug provides peace of mind while on the road. Knowing that all necessary lights are properly connected and functioning gives me confidence in my ability to safely tow a trailer. It also ensures the
My Buying Guide on Four Way Trailer Plug
As someone who has owned a trailer for many years, I know the importance of having a reliable and efficient trailer plug. The four-way trailer plug, also known as the flat-four or four-pin plug, is a crucial component in connecting your trailer to your vehicle’s electrical system. In this buying guide, I will share my personal experience and knowledge to help you make an informed decision when purchasing a four-way trailer plug.
What is a Four Way Trailer Plug?
A four-way trailer plug is a type of electrical connector that allows you to transfer power from your vehicle to your trailer. It has four pins that correspond to the basic lighting functions of the trailer: tail lights, brake lights, turn signals, and ground connection. This type of plug is commonly used for smaller trailers such as utility trailers, boat trailers, and small campers.
Consider Your Vehicle’s Wiring Setup
Before purchasing a four-way trailer plug, it is essential to consider your vehicle’s wiring setup. Some vehicles come with pre-installed wiring for towing, while others may require additional wiring installation. If your vehicle does not have pre-installed wiring, it is best to consult with a professional mechanic or refer to your vehicle’s manual for proper wiring instructions.
Type of Material
When it comes to the material of the four-way trailer plug, there are two main options: plastic and metal. Plastic plugs are more affordable but may not be as durable as metal plugs. On the other hand, metal plugs are more sturdy and can withstand harsh weather conditions but come at a higher cost.
Waterproofing Capability
Since most trailers are used outdoors and exposed to different weather elements, it is crucial to choose a waterproof four-way trailer plug. Water can cause corrosion and damage to the electrical connections over time if not properly sealed. Look for plugs with rubber gaskets or O-ring seals that can keep out water and prevent any potential damage.
Compatibility with Your Trailer
Before making a purchase, make sure that the four-way trailer plug you choose is compatible with your specific type of trailer. Some plugs may come with adapters or universal fit options that can work with different types of trailers.
Price Range
Four-way trailer plugs vary in price depending on their features and brand. It is essential to set a budget before making any purchase and compare prices from different brands or retailers. However, keep in mind that opting for cheaper options may compromise quality and durability.
In Conclusion
Investing in a high-quality four-way trailer plug will ensure safe towing practices and save you from potential headaches down the road. Consider factors such as compatibility, waterproofing capability, material type, and price range before making your purchase decision. With this buying guide in mind along with thorough research, you can find the perfect four-way trailer plug that meets all your needs.
Author Profile

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Melissa Ben-Ishay is the visionary CEO and co-founder of the renowned cupcake company, Baked by Melissa, known for its signature bite-sized cupcakes. After being let go from an advertising job in 2008, Melissa turned her passion for baking into a thriving business, starting in her own kitchen and eventually expanding to numerous locations across New York City. Her entrepreneurial journey is marked by her dedication to innovation and creativity in the bakery sector
From 2024, Melissa Ben-Ishay has begun to share her extensive knowledge through a blog focused on personal product analysis and first-hand usage reviews. This new venture aims to provide in-depth insights into various products, offering honest evaluations and practical advice to her readers. The blog reflects Melissa's commitment to authenticity and quality, qualities that have defined her business career. Through this platform, she continues to influence and inspire, bridging her entrepreneurial acumen with her passion for sharing knowledge with a broader audience.
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