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Instead of switching between connectors or adapters, this socket gives you both a 7-way RV-style and a 4-flat trailer plug in one spot. It’s a clean, single-mount setup that handles electric brakes, reverse lights, and 12V power through the 7-way, while still covering the basics like running, turn, and brake lights through the 4-flat.
The socket comes with a sturdy bracket and self-tapping screws, so it mounts easily to a bumper or directly to the trailer hitch cross tube. Once it’s bolted up, the connectors sit securely in place and are easy to reach when hooking up your trailer wiring.
When your vehicle already has a factory tow wiring harness with a USCAR plug, this socket connects right in without cutting or splicing. It’s built for a direct fit, making it an easy way to upgrade from a 4-flat to a full 7-way/4-flat setup.
Whether you’re pulling a small utility trailer, boat, or camper with electric brakes, the combo socket covers it. The dual connectors mean you can switch between trailers using different wiring styles without having to rewire or carry extra adapters.
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
Ratings & Reviews
Item showed up and is correct for the a pplication
This fits easily and can be installed in just a few minutes, making it a simple upgrade. It looks like it came from the factory, giving a clean appearance that matches your vehicle's original style.
Didn't come with bracket as shown in de scription
Super easy install
good pricing good service great company to deal with. highly recommended
Nice daul plug set up. Plugs into the factory harness
Worked great.
Just what I needed for my new Bronco!
Wonderful replacement for my damaged factory plug. Super easy to remove and replace. Under 5 minutes from start to finish. Excellent plug and play.
What I need it!!
Perfect addition to my new Curt hitch!
Fits great. Plug and play
Item as described and fast shipping
Love it, works great, looks good!
perfect fit and replacement for the original 7pin plug on my 04 yukon xl. Plug and play to add the 4pin connector!
The plug and bracket are great but the screws it came with were terrible. A quick trip to the hardware store for some bolts and I had it all mounted up and working.
Works great, very easy to install.
This unit doesn't work on 2025 Ford Bro nco.
Fit the factory plug. Self tapping screws had no issue screwing into the hitch tube. Exactly why I needed.
No problems at all
What a solid product this is. I almost couldn't believe how easy it was to install on my Ram 2500 -- which is probably more Chrysler's responsibility than Curts, but definitely have no fear on that. The plug fit well and it's grip on my cable was excellent. Highly recommended
The brake controller works great and you don’t even notice the small dial on the dash!
It should come with the receiver hitch I bought like B and W does!
Nice option to have both types of plugs available. Installation was easy, direct plug into the existing harness.
Will be direct fit to factory harness, looks like a well built part.
Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Mike L.
10/30/2025
Somebody dropped the ball on that one, for sure! I'll have the missing bracket sent out for you.