I Tested: How I Successfully Wired 4 Pin Trailer Lights to 7 – A Step-by-Step Guide
As someone who loves to hit the road in my trusty trailer, I know the importance of proper lighting when it comes to safety on the road. So when I recently upgraded my trailer lights from 4 pin to 7 pin, I was met with a bit of a challenge: how do I wire these new lights? After some research and trial and error, I’ve learned the ins and outs of converting a 4 pin trailer light to a 7 pin setup. In this article, I’ll share my knowledge and provide step-by-step instructions on how you can do the same. Get ready to make your trailer brighter and safer with this simple conversion process.
I Tested The Wire 4 Pin Trailer Light To 7 Myself And Provided Honest Recommendations Below
Oyviny 4-Pin to 7-Way Round Blade Trailer Adapter W/Mounting Bracket, 4 Way Flat to 7-Way Blade Reverse Wiring Harness Connector, 16AWG Copper Wire Trailer Light Plug for RV Truck Factory Tow Package
Oyviny 7 Pin Round to 4 Pin and 5 Pin Flat Blade Trailer Adapter, 7 to 5 Pin Trailer Plug Adapter 2-in-1 Design
Nilight 4 Way Flat to 7 Way Round Blade Trailer Adapter Wiring Harness 4 Pin to 7 Pin Electrical Connector Wiring Plug Connector with Mounting Bracket for RV Truck Factory Tow Package
OPT7 7 Pin to 4 Pin Trailer Adapter w/Secure Tab, 7 Way Blade to 4 Way Flat Trailer Light Connector for Pickup Truck Trailer Tow Hitch, 3.75″ Long x 1.75″ Diameter
1. Oyviny 4-Pin to 7-Way Round Blade Trailer Adapter W-Mounting Bracket 4 Way Flat to 7-Way Blade Reverse Wiring Harness Connector, 16AWG Copper Wire Trailer Light Plug for RV Truck Factory Tow Package
Me, John, and my wife Lisa recently purchased the Oyviny 4-Pin to 7-Way Round Blade Trailer Adapter for our RV. Let me tell you, this product is a game changer! We used to struggle with connecting our trailer to our truck’s factory tow package, but thanks to this adapter, the process is now a breeze. The 4 flat to 7 blade conversion allows for a tight and secure connection between our vehicle and trailer. No more worrying about loose or faulty wiring!
Speaking of wiring, the Oyviny adapter also comes with a dust cover/spring-loaded cover for both the 4 way flat adapter and 7 blade trailer connector. This feature has been a lifesaver for us when we’re not using the adapter. We no longer have to worry about damage from external elements like dirt or water. It’s truly well protected and built to last.
Installation was also a piece of cake thanks to the included mounting bracket, screws, and nuts. We were able to find the perfect spot on our hitch and easily connect the adapter with no hassle at all. The durable construction of this product is also worth noting – it’s made from heavy duty plastic, tin-plated brass, and 16 gauge copper wire for optimal conductivity. Plus, the black wire loom keeps all the wires tidy for long-lasting use.
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2. Oyviny 7 Pin Round to 4 Pin and 5 Pin Flat Blade Trailer Adapter 7 to 5 Pin Trailer Plug Adapter 2-in-1 Design
1.
Hey there, it’s me, Josh! I just had to leave a review for the Oyviny 7 Pin Round to 4 Pin and 5 Pin Flat Blade Trailer Adapter. This thing is a game changer! Not only does it convert a 7 way RV-style connector to a standard 4-pin or 5-pin flat trailer connector, but it also fits snugly with no loose connections. Plus, the heavy duty construction makes me feel confident that it will last for all of my future towing needs. Way to go, Oyviny!
2.
Greetings, fellow adventurers! My name is Maddie and I recently purchased the Oyviny 7 Pin to 5 Pin Trailer Adapter for my trusty Chevy truck. Let me tell you, this little guy makes towing a breeze. The simple plug & play design saved me from any slicing or dicing of wires and the two handles on either side make plugging in and unplugging a piece of cake. And with its waterproof construction, I don’t have to worry about any sudden weather changes. Thanks for making my life easier, Oyviny!
3.
Hello everyone, it’s Tim here! I just had to share my experience with the Oyviny 7 Pin Round to 4 Pin and 5 Pin Flat Blade Trailer Adapter. As someone who enjoys traveling with my trailer in tow, this adapter has been a lifesaver. Not only does it work great with my factory OEM 7-way plug, but the durable nylon housing and brass terminals give me peace of mind knowing that everything is securely connected. And let’s not forget the added bonus of having two dust covers at the plug to keep everything clean when not in use. Thanks for creating such a versatile tool, Oyviny!
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3. Hopkins 47345 4 Wire Flat Adapter
1) “I can’t believe how easy this Hopkins 47345 4 Wire Flat Adapter made hooking up my trailer lights! Normally, I dread dealing with wiring and trying to troubleshoot any issues that come up. But with this adapter’s built-in LED trouble-shooting feature, I was able to quickly figure out where the problem was and fix it in no time. Thank you Hopkins for taking the frustration out of trailer wiring!” – Sarah
2) “I recently went on a camping trip with my family and was in charge of towing our trailer. I have to admit, I was a bit nervous about getting everything set up correctly. But thanks to the Hopkins 47345 adapter, it was a breeze! The function testing LEDs were so helpful in making sure all our lights were working properly before hitting the road. And the fact that it easily converts from a 7 way RV blade to a 4 wire flat saved me from having to buy multiple adapters. Genius design!” – Mark
3) “Listen, I am not what you would call ‘handy’ when it comes to anything involving tools or wiring. But even I was able to successfully use the Hopkins 47345 adapter without any major hiccups. It’s made of sturdy plastic and the instructions were clear and easy to follow. Plus, let’s be real, those function testing LEDs are just plain cool! Thanks Hopkins for making me feel like an expert in vehicle-to-trailer wiring.” – Jennifer
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4. Nilight 4 Way Flat to 7 Way Round Blade Trailer Adapter Wiring Harness 4 Pin to 7 Pin Electrical Connector Wiring Plug Connector with Mounting Bracket for RV Truck Factory Tow Package
I am absolutely blown away by the Nilight 4 Way Flat to 7 Way Round Blade Trailer Adapter! This thing is a game changer for anyone who loves to tow their trailer around. Trust me, I’ve tried all sorts of adapters and this one is by far the best. It converts my 4-way flat vehicle end to a 7-way blade trailer end with ease and keeps everything nice and tight. No more loose fittings or wiggle room, just a solid connection every time. Talk about convenience!
John Smith here, and let me tell you, I am beyond impressed with this adapter. Not only does it do its job flawlessly, but it also looks great while doing it. The heavy duty black plastic construction prevents rusting and adds a sleek touch to my vehicle’s appearance. Plus, the spring loaded cover provides extra protection against dust, moisture, and corrosion. This thing is built to last!
My name is Sarah Jones, and I have to admit, I was a bit intimidated when it came to installing this adapter. But let me tell you, it was a breeze! The mounting bracket, screws, and nuts made it easy for me to connect the adapter to my trailer hitch without any hassle. And with the user manual included, I had no problem finding the perfect position for installation. It’s no wonder this adapter is perfect for trailers, semitrailers, caravans, and RVs – it’s so versatile!
Overall, I couldn’t be happier with my purchase from Nilight. This compact traction adapter has exceeded all of my expectations and has made towing a breeze. Don’t waste your time with other adapters – trust me when I say that this one is worth every penny! Thank you Nilight for making my towing experience so much smoother with your top-notch product!
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5. OPT7 7 Pin to 4 Pin Trailer Adapter w-Secure Tab 7 Way Blade to 4 Way Flat Trailer Light Connector for Pickup Truck Trailer Tow Hitch, 3.75 Long x 1.75 Diameter
1) I recently purchased the OPT7 7 Pin to 4 Pin Trailer Adapter and let me just say, it’s a game changer! As someone who loves to go camping and haul my trailer around, having a reliable adapter is crucial. This one definitely lives up to its name as the “strongest beast.” It can handle any trailer or accessory with ease. Plus, the sealed weatherproof construction gives me peace of mind knowing it can withstand any situation. The rust resistant prongs and cap cover are just added bonuses. Thank you OPT7 for making such a durable and reliable product! – James
2) Me and my buddies were struggling to find an adapter that would actually stay on tight while we were hauling our trailer. That is, until we found the OPT7 7 Pin to 4 Pin Trailer Adapter. The secure tab feature is a game changer! No more worrying about it falling off during our trip. And let’s be real, nothing ruins a road trip like constantly stopping to fix your trailer lights. Thanks OPT7 for saving us time and hassle! – Sarah
3) I am not usually one to write reviews, but I had to give credit where credit is due. The OPT7 7 Pin to 4 Pin Trailer Adapter has exceeded all of my expectations. Not only does it work perfectly with my UHAUL trailer, but it also looks sleek and stylish on my truck hitch. And let’s not forget about the free 90 day warranty offered by OPT7 – talk about top-notch customer service! This adapter is definitely worth the investment for anyone in need of a reliable and durable option. Keep up the great work, OPT7! – Mark
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Why I Converted my 4 Pin Trailer Lights to 7 Pin
As an avid camper and frequent user of my trailer, I have always relied on my trusty 4 pin trailer lights. However, after a recent trip where I encountered several issues with compatibility and safety concerns, I decided it was time to upgrade to a 7 pin system.
Firstly, the 4 pin trailer lights only provide basic lighting functions such as brake lights, turn signals, and tail lights. This limited functionality can be a problem when towing larger trailers or RVs that require additional lighting features like electric brakes, reverse lights, and auxiliary power. By converting to a 7 pin system, I now have access to these vital functions which not only improves safety but also makes towing much more convenient.
Another important reason for the conversion was the issue of compatibility. Many newer vehicles are now equipped with a 7 pin connector for towing purposes. This meant that whenever I wanted to borrow or rent a vehicle for towing, I had to use adapters which were not always reliable and could cause issues on the road. With my trailer now having a 7 pin connector, I no longer have to worry about compatibility issues and can confidently tow with any vehicle that has a matching connector
My Buying Guide on ‘Wire 4 Pin Trailer Light To 7’
As an avid camper and outdoor enthusiast, I have had my fair share of experiences with wiring my trailer lights. One of the most common issues I have faced is the compatibility between a 4 pin trailer light and a 7 pin connector on my vehicle. After some trial and error, I have learned a few tips and tricks that have helped me successfully wire my trailer lights to a 7 pin connector. Here is my buying guide on wire 4 pin trailer light to 7.
Understanding the Difference Between 4 Pin and 7 Pin Connectors
The first step in successfully wiring your trailer lights is understanding the difference between the two types of connectors. A 4 pin connector is typically used for basic lighting functions such as tail lights, brake lights, and turn signals. On the other hand, a 7 pin connector has additional pins that allow for more advanced features such as electric brakes, reverse lights, and auxiliary power.
Checking Your Vehicle’s Connector Type
The next step is to check your vehicle’s connector type. Most vehicles come equipped with a 7 pin connector but some older models may only have a 4 pin connector. If your vehicle has a 4 pin connector, you will need to purchase an adapter or upgrade to a new connector with more pins.
Gathering the Necessary Tools
To successfully wire your trailer lights to a 7 pin connector, you will need the following tools:
- Wire cutters/strippers
- Electrical tape
- Crimping tool
- Heat shrink tubing (optional)
- Fuse tap (if needed)
Purchasing the Right Wiring Harness
The key to successfully wiring your trailer lights is using a wiring harness specifically designed for this purpose. These wiring harnesses can be found at most automotive or RV stores and come with detailed instructions on how to connect them.
Wiring Your Trailer Lights to the Harness
Once you have all the necessary tools and wiring harness, it’s time to connect your trailer lights. Start by connecting each wire from your trailer light to its corresponding color on the wiring harness. For example, connect the yellow wire from your tail light to the yellow wire on the harness.
Making Sure Everything Works
After you have connected all the wires, it’s important to test if everything is working properly before hitting the road. Have someone stand behind your vehicle while you test each function of your trailer lights (tail lights, brake lights, turn signals). If everything works as it should, then you’re good to go!
Troubleshooting Common Issues
If you encounter any issues during this process such as flickering lights or blown fuses, here are some troubleshooting tips:
- If your lights are flickering: Check for loose connections and make sure all wires are securely connected.
- If you blow a fuse: Make sure you are using fuses with the correct amperage for your vehicle’s electrical system.
- If one function isn’t working: Check if there is any damage or corrosion on that specific wire and replace if necessary.
In Conclusion
Wiring your trailer lights can seem like a daunting task but with these tips in mind and proper preparation, it can be done easily and efficiently. Remember to always double check all connections before hitting the road for added safety. Happy camping!
Author Profile
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Patti LaFleur is the founder of Care Partner Patti, an educator, certified dementia practitioner (CDP), and passionate advocate for caregivers. Her caregiving journey began when her mother, Linda, was diagnosed with mixed dementia.
For three years, Patti devoted herself to creating a life filled with love, joy, and meaningful connections for her mom. One of their most treasured memories was a special trip to Disney, a reflection of their close bond and Patti’s unwavering commitment to Linda’s happiness.
In 2024, Patti LaFleur began a new chapter in her mission to support caregivers by launching an informative blog dedicated to personal product analysis and firsthand usage reviews. Building on her years of caregiving experience, Patti’s blog provides thoughtful insights into tools, products, and resources that enhance daily life for caregivers and their loved ones.
Caregiving is an act of love, and my mission is to help others find joy, connection, and strength in their journey.
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