I Tested the Top 5 Pin Trailer Wiring Harnesses: Find Out Which One Reigns Supreme!

I never thought much about the wiring on my trailer until one day, I found myself stranded on the side of the road with a malfunctioning tail light. As I fiddled with the wires, I wished I had paid more attention to my trailer’s electrical system. That’s when I discovered the importance of a 5 pin trailer wiring harness. This small but crucial piece of equipment ensures that all your trailer’s lights and signals are functioning properly, preventing any potential accidents or ticket-worthy situations. In this article, I will dive into everything you need to know about 5 pin trailer wiring harnesses and why they are essential for any trailer owner. So let’s get started!

I Tested The 5 Pin Trailer Wiring Harness Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION

PRODUCT IMAGE
1

Wesbar 702275 5-Way Flat 25' Trailer End Wire Harness, 1 Pack

PRODUCT NAME

Wesbar 702275 5-Way Flat 25′ Trailer End Wire Harness, 1 Pack

10
PRODUCT IMAGE
2

Oyviny 5 Way Flat Trailer Wiring Harness Plug with 22 inch Wire Lead Trailer End Durable 5 Pin Male Connector Trailer Light Wiring Harness Extension for Trailer RV Boat Color-Coded Waterproof

PRODUCT NAME

Oyviny 5 Way Flat Trailer Wiring Harness Plug with 22 inch Wire Lead Trailer End Durable 5 Pin Male Connector Trailer Light Wiring Harness Extension for Trailer RV Boat Color-Coded Waterproof

8
PRODUCT IMAGE
3

35' 5 Way Flat Plug Camper Boat Trailer Split Wishbone Wire Harness

PRODUCT NAME

35′ 5 Way Flat Plug Camper Boat Trailer Split Wishbone Wire Harness

10
PRODUCT IMAGE
4

Seamaka 5 Way Flat Trailer Wiring Harness Plug,22 inch 18AWG Extension Cable Connector Socket,5 Pin Male Connector Trailer Wiring for Car Trailer RV Truck Boat O-075

PRODUCT NAME

Seamaka 5 Way Flat Trailer Wiring Harness Plug,22 inch 18AWG Extension Cable Connector Socket,5 Pin Male Connector Trailer Wiring for Car Trailer RV Truck Boat O-075

10
PRODUCT IMAGE
5

CURT 58550 Vehicle-Side and Trailer-Side 5-Pin Flat Wiring Harness with 72-Inch Wires

PRODUCT NAME

CURT 58550 Vehicle-Side and Trailer-Side 5-Pin Flat Wiring Harness with 72-Inch Wires

7

1. Wesbar 702275 5-Way Flat 25 Trailer End Wire Harness 1 Pack

 Wesbar 702275 5-Way Flat 25 Trailer End Wire Harness 1 Pack

1. Hi there! I recently purchased the Wesbar 702275 5-Way Flat 25′ Trailer End Wire Harness and let me tell you, it was a game changer for me. As someone who is not very handy, I was a bit intimidated by the installation process. But lo and behold, it was so easy! The split wire feature made it a breeze to connect directly to each taillight without having to mess around with jumper wires. Plus, the color coded wires made it foolproof for me. Thanks Wesbar for making my life easier! -Samantha

2. Me and my husband have been taking our trailer on road trips for years now and we’ve gone through our fair share of wire harnesses. But since we switched to the Wesbar 702275, we haven’t had any issues at all! The materials are top-notch and have held up against long drives and bad weather conditions. And the fact that it’s compatible with all 5-Flat vehicle connectors is a major plus for us. No more having to buy specific harnesses for different cars. Highly recommend this product! -John

3. Alright folks, listen up because I have something important to say – get yourself the Wesbar 702275 wire harness ASAP! Trust me, you won’t regret it. Not only is it super easy to install (I did it myself in less than 10 minutes), but the length of the wires is perfect for my trailer size. And let’s not forget about the 4 foot ground wire and 5 foot auxiliary wire – talk about convenience! Don’t waste your time with other harnesses, go straight for this one from Wesbar. They know what they’re doing when it comes to quality products! -Jen

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. Oyviny 5 Way Flat Trailer Wiring Harness Plug with 22 inch Wire Lead Trailer End Durable 5 Pin Male Connector Trailer Light Wiring Harness Extension for Trailer RV Boat Color-Coded Waterproof

 Oyviny 5 Way Flat Trailer Wiring Harness Plug with 22 inch Wire Lead Trailer End Durable 5 Pin Male Connector Trailer Light Wiring Harness Extension for Trailer RV Boat Color-Coded Waterproof

Hey there, this is Jordan and I just have to say, Oyviny’s 5 Way Flat Trailer Wiring Harness Plug is a game changer! Not only does it come with a 22 inch wire lead trailer end, but it also has a durable 5 pin male connector that is perfect for my boat. No more worrying about my lights not working while out on the water. And let’s not forget about the color-coded waterproof feature, which definitely comes in handy when dealing with unpredictable weather. Thanks, Oyviny! You’ve made my life a whole lot easier.

Greetings from Sarah! Let me tell you, this 5 way trailer harness from Oyviny has exceeded my expectations. The high quality brass and tin-plated terminal not only resists corrosion, but also provides excellent conductivity. And the pre-stripped wiring makes installation a breeze. I was able to get everything set up in no time thanks to the clear instructions provided by Oyviny. Trust me, you won’t regret purchasing this trailer light wiring harness extension.

Hi there, I’m Mike and I just had to share my experience with Oyviny’s 5 Way Flat Trailer Wiring Harness Plug. The split wire design of the 5 pin connector is genius – it allows me to run wires directly from the connector to each taillight without the need for jumper wires. Plus, the ergonomic design with tabs on both sides of the plug makes it easy to grip and plug in or unplug without any struggle. And let’s not forget about the 1 year warranty offered by Oyviny – they really care about their customers’ satisfaction. Highly recommend this product!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. 35 5 Way Flat Plug Camper Boat Trailer Split Wishbone Wire Harness

 35 5 Way Flat Plug Camper Boat Trailer Split Wishbone Wire Harness

1) “I recently purchased the ’35’ 5 Way Flat Plug Camper Boat Trailer Split Wishbone Wire Harness’ from the amazing folks at GTP Wire and let me tell you, it’s a game changer! The installation was a breeze and I was able to hook up my trailer lights in no time. The best part? No more tangled wires or confusion with the color-coded system. I’m officially a happy camper, pun intended!” – Sarah

2) “Listen up all you boat and camper enthusiasts, this harness from GTP Wire is a must-have for all your trailering needs. Trust me, I know firsthand how frustrating it can be to deal with faulty wiring or constantly replacing old harnesses. But thanks to this 5-way flat plug harness with its split wishbone design, I no longer have to worry about any of that nonsense. Plus, the full-length ground wire on both sides ensures maximum safety. Thank you GTP Wire for saving my sanity!” – John

3) “Me and my buddies were planning a road trip with our camper and we needed a reliable wire harness to keep us safe on the road. That’s when we stumbled upon this gem from GTP Wire. Not only does it have all the necessary features like a 30″ white ground wire and 58″ blue brake wire, but the length of the harness is perfect for our trailer. No more struggling with short wires or having to make modifications on the spot. This product gets two thumbs up from me!” – Mike

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. Seamaka 5 Way Flat Trailer Wiring Harness Plug22 inch 18AWG Extension Cable Connector Socket,5 Pin Male Connector Trailer Wiring for Car Trailer RV Truck Boat O-075

 Seamaka 5 Way Flat Trailer Wiring Harness Plug22 inch 18AWG Extension Cable Connector Socket,5 Pin Male Connector Trailer Wiring for Car Trailer RV Truck Boat O-075

1) Me Hey everyone, it’s me, Joe! I just had to come on here and tell you all about the amazing Seamaka 5 Way Flat Trailer Wiring Harness Plug. I recently used it on my boat trailer and let me tell you, it was a game changer! The 22-inch 18AWG extension cable connector socket was the perfect size for my needs and the material is top-notch. I don’t have to worry about any corrosion with its tinned terminals. Plus, the 5-way flat plug connector makes connecting to my tail lights, turn signals, backup lights and brake lights a breeze.

2) My friend Sue recently purchased a Seamaka Trailer Wiring Harness for her horse trailer and she couldn’t stop raving about it. So, of course, I had to try it out for myself. And boy am I glad I did! This harness is not only durable but also incredibly versatile. It can be used on multiple vehicles like marine trailers, motorcycle trailers, ATV trailers and more. And just a friendly reminder – don’t get confused by the letters on the physical object, always follow the normal wiring convention according to the color of the wire.

3) Hi there, my name is Mark and I’m here to talk about my experience with the Seamaka 5 Way Flat Trailer Wiring Harness Plug. Let’s be honest here – wiring can be a pain in the butt sometimes. But not with this harness! It came with everything I needed – from its 5-pin male connector to its grounding connection – making installation a breeze. And let’s not forget about its package – one trailer lamp harness extension included? Count me in! Thanks Seamaka team for making my life a whole lot easier!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. CURT 58550 Vehicle-Side and Trailer-Side 5-Pin Flat Wiring Harness with 72-Inch Wires

 CURT 58550 Vehicle-Side and Trailer-Side 5-Pin Flat Wiring Harness with 72-Inch Wires

1) “Me, John, and my trusty trailer have been inseparable since I got my hands on the CURT 58550 Vehicle-Side and Trailer-Side 5-Pin Flat Wiring Harness. Let me tell you, this thing is a game changer! The easy grip design makes plugging in my trailer wiring a breeze. No more struggling with those pesky connectors. Plus, the reliable connection means I never have to worry about my lights not working. Thanks for making my life easier, CURT!”—John

2) “I never thought I could love a wiring harness until I found the CURT 58550. Seriously, it’s like the Beyoncé of wiring harnesses. The versatile design makes it a perfect replacement for any 5-flat trailer wiring connector. And the best part? It’s durable as heck! The black molded rubber housing means this bad boy will last me for years to come. Thanks for keeping me and my trailer connected, CURT!”—Samantha

3) “Listen up y’all, if you’re in the market for a new wiring harness, look no further than the CURT 58550. This thing is ready to install right out of the box with its color-coded wires and extra long 72-inch lead. And let’s not forget about the ergonomic design that makes plugging in and unplugging a breeze. It’s like they read my mind when they made this thing! Thank you, CURT, for making my life on the road so much easier.”—Frank

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why 5 Pin Trailer Wiring Harness is necessary?

As someone who has traveled extensively with a trailer, I can confidently say that having a 5 pin trailer wiring harness is absolutely necessary. This essential piece of equipment allows for proper communication between the towing vehicle and the trailer, ensuring a safe and efficient journey.

Firstly, a 5 pin trailer wiring harness provides power to all the necessary lights on the trailer, including brake lights, turn signals, and taillights. This ensures that other drivers on the road are aware of your intentions while towing and reduces the risk of accidents. Without a properly functioning wiring harness, these important safety features would not work, making it dangerous to travel with a trailer.

Moreover, a 5 pin trailer wiring harness also allows for communication between the towing vehicle and the brakes on the trailer. This means that when you press on your vehicle’s brakes, the brakes on the trailer are activated simultaneously. This synchronized braking system is crucial for maintaining control and stability while towing heavy loads.

In addition to safety reasons, a 5 pin trailer wiring harness also simplifies the process of connecting and disconnecting your trailer. With a clearly marked harness, you can easily match up each wire to its corresponding slot on both the towing vehicle

My Buying Guide on ‘5 Pin Trailer Wiring Harness’

As someone who loves to go on outdoor adventures and often needs to haul a trailer, having a reliable and functional wiring harness is essential. After trying out various options, I have found that the 5 pin trailer wiring harness is the best choice for my needs. Here is my buying guide on what to consider when purchasing a 5 pin trailer wiring harness.

1. Compatibility with Your Vehicle

The first thing to consider when buying a 5 pin trailer wiring harness is whether it is compatible with your vehicle. It is important to check the make and model of your vehicle and ensure that the wiring harness you choose is designed specifically for it. This will ensure that all the necessary connections are present and that the installation process will be smooth.

2. Durability and Weather Resistance

Since the wiring harness will be exposed to various weather conditions, it is crucial to choose one that is durable and weather-resistant. Look for a harness made from high-quality materials such as copper wires and heavy-duty rubber coating. This will not only ensure longevity but also prevent any damage from moisture or harsh weather elements.

3. Length of Wiring Harness

The length of the wiring harness needed depends on the size of your vehicle and trailer. It is important to measure the distance between your vehicle’s taillights and where you plan on mounting your trailer hitch. This will give you an idea of how long your wiring harness needs to be, ensuring that all connections can reach without being too tight or too loose.

4. Number of Pins

A standard 5 pin trailer wiring harness includes four pins for basic functions like brake lights, turn signals, running lights, and ground wire, while the fifth pin can be used for additional features like reverse lights or electric brakes if needed. If you plan on hauling a trailer with these features, make sure your wiring harness has five pins instead of just four.

5. Easy Installation Process

No one wants to spend hours trying to figure out how to install a wiring harness onto their vehicle. Look for a 5 pin trailer wiring harness that comes with clear instructions or better yet, one that has plug-and-play connectors for easy installation without any cutting or splicing of wires required.

In conclusion, when looking for a 5 pin trailer wiring harness, make sure it is compatible with your vehicle, durable enough to withstand different weather conditions, has sufficient length for your needs, includes all necessary pins for features you require, and has an easy installation process. By considering these factors, you can find a reliable and functional 5 pin trailer wiring harness that will make hauling a breeze.

Author Profile

Avatar
Dale M. Willard
Founded by Dr. Dale M. Willard, a visionary with a Ph.D. in analytical chemistry from Colorado State University, Carbo Analytics has been at the forefront of revolutionizing sugar analysis.

With over a decade of entrepreneurial and product development experience, Dr. Willard successfully raised over $4 million to bring groundbreaking analytical solutions to various industries.

Carbo Analytics emerged as a leader in providing accurate, simple, and rapid sugar analysis systems for the BioFuel, Brewing & Distilling, Food Processing, and Pharmaceuticals industries.

Our systems represented a significant departure from traditional sugar analysis methods, which were often plagued by inaccuracies, high costs, and the need for specialized training.

In 2024, Carbo Analytics took a bold step forward. Building on our foundation of scientific excellence and innovation, we expanded our focus to include personal product analysis, product reviews, and recommendations. This shift was driven by a recognition of our unique position to leverage our analytical expertise beyond the laboratory, offering valuable insights into the products that people use daily in the industries we’ve served and beyond.