Switching between trailers with different connectors doesn’t have to mean swapping cords or modifying wiring. This adapter converts a 7-way round blade vehicle socket to a 4-way flat plug so you can tow small utility, boat, or cargo trailers that use a basic 4-pin setup. It’s a plug-only design that fits right in and keeps your connections clean and simple.
There’s no splicing, soldering, or extra wiring required. Just plug the adapter into the existing 7-way socket and you’re ready to connect your trailer’s 4-flat plug. It’s built for quick use, perfect for times when you need to hook up and go without any hassle.
Whether you’re towing with a truck, SUV, or crossover equipped with a 7-way outlet, this universal-fit adapter makes it easy to connect to standard flat-4 trailer wiring. It’s a handy piece to keep in the glove box for whenever you need a quick connection to a different style of trailer.
The adapter maintains the basic lighting functions—running lights, turn signals, and brake lights—so your trailer stays visible and road legal. Everything connects through solid contacts that give reliable power transfer every time you plug in.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello, everybody. This is Jeff at etrailer. Today we're gonna take a look at this Roadmaster 7-way round to a 4-way flat adapter. Now, switching between trailers that have different connectors doesn't have to mean swapping cords or modifying your wiring. This adapter here will convert your 7-way round blade vehicle socket to this 4-way flat plug so that you can tow small utility boat or cargo trailers that use a basic 4-pin setup. This adapter's gonna maintain the basic lighting functions like the running lights, turn signals, and brake lights, so your trailer will stay visible and road legal.
Again, there's no splicing, soldering, or extra wiring needed. All you have to do is just plug this adapter into your existing 7-way socket and you're ready to connect your trailer's 4-way flat to this end right here. It is built for a nice quick use. Perfect for times when you need to hook up and go without any hassle. And it's a nice handy piece to keep in your glove box for whenever you need a quick connection to a different type of style of trailer.
Now, everything connects through the solid contacts that give reliable power transfer every time you plug it in. Now, if you do have any other additional questions regarding this part or any other item that we carry, please feel free to reach out to us so we can help you get all of your questions answered for you. But that should do it for a look at this Roadmaster 7-way round to 4-way flat adapter.
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