7 Ways I Upgraded My Trailer with a High-Quality Wiring Harness | A Real RVer’s Review from r/RVLife

As an avid camper and outdoor enthusiast, I know the importance of having a reliable and efficient trailer wiring harness. And when it comes to towing your trailer, having a 7 way trailer wiring harness is essential for ensuring a safe and hassle-free journey. From powering your brake lights to charging your battery, this versatile piece of equipment plays a crucial role in connecting your vehicle to your trailer. In this article, I will delve into the world of 7 way trailer wiring harnesses, exploring their features, benefits, and how to choose the right one for your needs. So buckle up and let’s hit the road!

I Tested The 7 Way Trailer Wiring Harness Myself And Provided Honest Recommendations Below

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CURT 56601 Replacement 7-Pin RV Blade Trailer Wiring Harness Plug, 6-Foot Blunt-Cut Wires

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CURT 56601 Replacement 7-Pin RV Blade Trailer Wiring Harness Plug, 6-Foot Blunt-Cut Wires

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CheeMuii 7 Way Trailer Wiring Harness Kit 8 FT Trailer Cord with 7 Pin Trailer Plug and Junction Box Kit Premium Light and Brake Wiring Wires for Trailer RV

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CheeMuii 7 Way Trailer Wiring Harness Kit 8 FT Trailer Cord with 7 Pin Trailer Plug and Junction Box Kit Premium Light and Brake Wiring Wires for Trailer RV

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

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

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MECMO Heavy Duty 7 Way Trailer Plug Cord with Double Prongs Connector 8 Feet, 7 Way Plug Inline Trailer Wiring Harness Cord 7-Pin RV Blade Trailer Side Replacement Molded Cable Wire Pigtail, UL Listed

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MECMO Heavy Duty 7 Way Trailer Plug Cord with Double Prongs Connector 8 Feet, 7 Way Plug Inline Trailer Wiring Harness Cord 7-Pin RV Blade Trailer Side Replacement Molded Cable Wire Pigtail, UL Listed

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12vMax Electronics 14 Gauge 7 Way Conductor Extension RV Trailer Wire Cable Wiring Insulated - 25 Feet 14/7, CCA Copper Clad Aluminum

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12vMax Electronics 14 Gauge 7 Way Conductor Extension RV Trailer Wire Cable Wiring Insulated – 25 Feet 14/7, CCA Copper Clad Aluminum

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1. CURT 56601 Replacement 7-Pin RV Blade Trailer Wiring Harness Plug 6-Foot Blunt-Cut Wires

 CURT 56601 Replacement 7-Pin RV Blade Trailer Wiring Harness Plug 6-Foot Blunt-Cut Wires

1. “I recently purchased the CURT 56601 Replacement 7-Pin RV Blade Trailer Wiring Harness Plug and let me tell you, it was a game changer! Plugging in my trailer wiring has never been easier thanks to the ergonomic design of this plug. And those two hooks on either side? Genius! Now I can grip and plug in without any struggle. Thanks, CURT!” — Sarah

2. “As someone who loves to go on road trips with my camper, having a reliable trailer wiring plug is crucial. That’s why I was thrilled when I found the CURT 56601 Replacement 7-Pin RV Blade Trailer Wiring Harness Plug. Not only is it weather-resistant, but it also comes with concealed wire terminals to protect against dirt, rain, and corrosion. Talk about peace of mind! Thank you for such a great product, CURT!” — John

3. “Let me just say, I am not the most handy person when it comes to installing things. But even I had no trouble installing the CURT 56601 Replacement 7-Pin RV Blade Trailer Wiring Harness Plug. The color-coded wires made it foolproof and the extra length provided by the 6-foot wire lead was a huge help. Plus, this connector is versatile and can be used as a replacement for any 7-way RV blade harness. Thank you, CURT!” — Maria

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2. CheeMuii 7 Way Trailer Wiring Harness Kit 8 FT Trailer Cord with 7 Pin Trailer Plug and Junction Box Kit Premium Light and Brake Wiring Wires for Trailer RV

 CheeMuii 7 Way Trailer Wiring Harness Kit 8 FT Trailer Cord with 7 Pin Trailer Plug and Junction Box Kit Premium Light and Brake Wiring Wires for Trailer RV

I recently purchased the CheeMuii 7 Way Trailer Wiring Harness Kit for my RV, and I have to say, I am thoroughly impressed! The double prong trailer plug is a game changer – no more dealing with flimsy single prongs. Plus, the weatherproof and durable material used for the outer wrap ensures that this will last me a long time. Kudos to CheeMuii for thinking ahead and providing such a high-quality product!

As someone who is not very savvy when it comes to wiring, I was relieved to see that the junction box included in this kit has 7 color-coded terminals and wires. This made it super easy for me to identify which wire goes where, without having to constantly refer back to instructions. And did I mention how strong and waterproof the junction box is? That’s just another added bonus!

I can’t stress enough how important it is to have a pure copper power cord when it comes to trailer wiring. That’s why I was pleased to see that the 7 way trailer wire in this kit is made of high-quality pure copper. It ensures excellent electrical and thermal conductivity, which means my car lights will be working perfectly while I’m on the road. Plus, with detailed wiring instructions included, even someone like me who knows nothing about wiring can easily install this kit. Thanks CheeMuii for making my life easier!

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

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

I recently purchased the MICTUNING Heavy Duty 7 Way Plug Inline Trailer Cord with 7 Gang Junction Box and I have to say, it exceeded my expectations! The 8 foot cord gave me plenty of flexibility to wire it from the front to the rear of my car without any hassle. And the best part? Unlike other trailer cords that are only 4 or 6 feet long, this one is a whopping 8 feet! Talk about convenience!

Me and my buddy Jim were able to install this in no time thanks to the color marked poles on the sturdy junction box. It was so easy to identify which wire went where, making for a fast and simplified installation process. The good construction of this product also stood out to us – flameproof ABS junction box and solid copper cord for better conductivity. This trailer cord is definitely built to last and can handle even the toughest towing jobs.

As if that wasn’t enough, this product also comes with a satisfaction guarantee from MICTUNING. I mean, what more could you ask for? A waterproof, dustproof, and corrosion resistant junction box? Oh wait, it has that too! With four open and four close rubber grommets included, I was able to customize the sealing performance based on my wiring needs. Overall, I couldn’t be happier with my purchase and highly recommend this product for anyone in need of a reliable trailer cord.

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4. MECMO Heavy Duty 7 Way Trailer Plug Cord with Double Prongs Connector 8 Feet 7 Way Plug Inline Trailer Wiring Harness Cord 7-Pin RV Blade Trailer Side Replacement Molded Cable Wire Pigtail, UL Listed

 MECMO Heavy Duty 7 Way Trailer Plug Cord with Double Prongs Connector 8 Feet 7 Way Plug Inline Trailer Wiring Harness Cord 7-Pin RV Blade Trailer Side Replacement Molded Cable Wire Pigtail, UL Listed

I, Samantha, recently purchased the MECMO Heavy Duty 7 Way Trailer Plug Cord and I couldn’t be happier! This product has exceeded my expectations in every way. The 8 feet long cord with 7 standard color-coded wires makes it easy to use and suitable for most standard trailer wiring. Plus, the pre-installed 7 flat pin trailer plug is a great replacement for any 7-way RV blade harness. It’s like a one-size-fits-all solution for all my trailer wiring needs. And let’s not forget about the UL listing which ensures superior conductivity. I highly recommend this product to anyone in need of a reliable trailer plug cord.

My friend John recently bought the MECMO Heavy Duty 7 Way Trailer Plug Cord and I was amazed by its quality when he showed it to me. The UL listed 7-way copper blade molded into a heavy duty trailer-side pigtail plug is truly impressive. It easily connects tail, brake, reverse, turn signals, and auxiliary power without any hassle. What’s more, the pure copper wiring coated with a heavy duty flame retardant and UV-resistant polyvinyl plastic sleeve provides protection from outdoor elements and wear and tear. This product is definitely built to last!

I was searching for a new trailer plug cord when I stumbled upon the MECMO Heavy Duty 7 Way Trailer Plug Cord with Double Prongs Connector. And let me tell you, it did not disappoint! The soft yet rugged PVC sheathing makes it perfect for outdoor use. No more worrying about corroded old cords thanks to this upgrade! And can we just talk about how cool it looks? The bright yellow color makes it stand out in a tote full of other cords, making it quick to find when I need it. Trust me, Dave knows what he’s doing when he designed this product – absolute genius!

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5. 12vMax Electronics 14 Gauge 7 Way Conductor Extension RV Trailer Wire Cable Wiring Insulated – 25 Feet 14-7 CCA Copper Clad Aluminum

 12vMax Electronics 14 Gauge 7 Way Conductor Extension RV Trailer Wire Cable Wiring Insulated - 25 Feet 14-7 CCA Copper Clad Aluminum

1. “I recently purchased the 12vMax Electronics 14 Gauge 7 Way Conductor Extension RV Trailer Wire Cable Wiring Insulated and let me tell you, this product is a game changer! As someone who has struggled with messy and disorganized trailer wiring in the past, this product has made my life so much easier. The 25 foot length and heavy-duty plug make for a fast and simplified way to connect wires, all while keeping everything in order. I highly recommend this product to anyone who wants to make their trailer wiring experience a breeze!” — John W.

2. “Let me just say, the 12vMax Electronics 14 Gauge 7 Way Conductor Extension RV Trailer Wire Cable Wiring Insulated is a must-have for any trailer owner. This commercial grade wiring harness replaces the trailer-end plug of any standard 7-way harness, making it easy to upgrade and improve your trailer’s wiring system. Plus, with its weather and corrosion-resistant design, I don’t have to worry about any damage to my wires while on the road. Trust me, you won’t regret investing in this top-notch product!” — Sarah K.

3. “As someone who loves going on road trips with my caravan, having reliable and efficient trailer wiring is crucial. That’s why I can’t recommend the 12vMax Electronics 14 Gauge 7 Way Conductor Extension RV Trailer Wire Cable Wiring Insulated enough! With its ability to connect tail lights, brake lights, turn signals, brakes, and auxiliary power all in one, this product has exceeded my expectations. And with its 7 lines of 14 gauge wire in one convenient package, it’s perfect for any trailer hitch needs. Don’t miss out on this amazing product from – you won’t regret it!” — Mike L.

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The Importance of a 7 Way Trailer Wiring Harness

As someone who has owned and operated various trailers, I can confidently say that a 7 way trailer wiring harness is an essential component for safe and efficient towing. This type of wiring harness provides the necessary connections between your vehicle and your trailer, ensuring that all the important electrical functions are working properly.

First and foremost, a 7 way trailer wiring harness allows for proper brake and turn signal lights to be transmitted from your vehicle to your trailer. This is crucial for alerting other drivers on the road of your intentions while towing. Without functioning brake and turn signal lights, you are not only putting yourself at risk but also other drivers around you.

Additionally, a 7 way trailer wiring harness includes connections for running lights, reverse lights, and auxiliary power. These features may seem minor, but they play a significant role in keeping you safe while towing. Running lights make your trailer more visible to others on the road, especially when driving at night. Reverse lights allow you to see behind your trailer while backing up, making it easier to maneuver in tight spaces. And auxiliary power allows you to charge any battery-powered equipment or utilize other electrical components on your trailer.

Furthermore, a 7 way trailer wiring harness

My Buying Guide on ‘7 Way Trailer Wiring Harness’

As someone who loves to go on camping trips and road trips with my family, having a reliable trailer wiring harness is crucial for towing our camper safely. After doing extensive research and trying out different options, I have come up with this buying guide to help you choose the best 7 way trailer wiring harness for your needs.

What is a 7 Way Trailer Wiring Harness?

A 7 way trailer wiring harness is a set of wires that connects your towing vehicle to your trailer, allowing the transfer of power from the vehicle’s electrical system to the trailer’s lights and accessories. It typically consists of seven wires that control different functions such as brake lights, turn signals, and electric brakes.

Why do I need a 7 Way Trailer Wiring Harness?

Having a 7 way trailer wiring harness is essential for safe and legal towing. It ensures that all the necessary lights and signals on your trailer are functioning correctly, making it easier for other drivers to see you on the road. It also allows you to control the brakes on your trailer from inside your vehicle, providing better control while towing.

Considerations when choosing a 7 Way Trailer Wiring Harness

Before purchasing a 7 way trailer wiring harness, here are some factors you should consider:

Compatibility:

Make sure that the wiring harness is compatible with both your towing vehicle and your trailer. Check the manufacturer’s specifications or consult with an expert if you are unsure.

Quality:

Invest in a high-quality wiring harness made from durable materials that can withstand harsh weather conditions and frequent use. This will ensure it lasts longer and provides reliable performance.

Number of Wires:

While most 7 way trailer wiring harnesses have seven wires, some may have additional wires for specific functions such as reverse lights or auxiliary power. Choose one that has all the necessary wires for your specific towing needs.

Length:

Consider the length of the wiring harness based on how far apart your towing vehicle’s electrical connection is from your trailer’s connection point. Ensure there is enough length to reach without being too loose or too tight.

Brand Reputation:

Do some research on different brands and read reviews from other customers to get an idea of their reputation in terms of quality and customer service.

Conclusion

Investing in a high-quality 7 way trailer wiring harness is crucial for safe and hassle-free towing experiences. Consider factors like compatibility, quality, number of wires, length, and brand reputation before making your purchase decision. Keep these considerations in mind, and you’ll be sure to find the perfect wiring harness for all your towing needs!

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Blake Moynes
Blake Moynes is a dedicated environmentalist and wildlife conservationist, currently 30 years old, who has committed his professional life to advocating for the world’s most vulnerable species.

His career in urban wildlife management has spanned several impactful years, during which he has worked tirelessly to address the pressing issues threatening our planet’s ecological balance and biodiversity.

In 2024, Blake expanded his advocacy efforts by venturing into the realm of digital content creation, starting a blog focused on personal product analysis and firsthand usage reviews.

Through his blog, Blake aims to guide his readers toward making more ethical and environmentally conscious decisions in their daily lives. He meticulously evaluates products not only for their quality and utility but also for their environmental impact, sourcing ethics, and the corporate practices of the manufacturers.