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In-stock alternatives that can ship today
Say goodbye to the struggle of mismatched trailer connectors with the Hopkins Heavy-Duty Coiled Wire Adapter. This robust, 3-foot cable neatly extends your reach without dangling wires. Its flex-coil design offers increased durability, so you can easily connect from your tow vehicle's 7-way RV blade to your trailer's 4-wire flat connector, ensuring a reliable hookup for those Walmart runs with the boat or cross-country adventures.
No more fretting about rain or snow ruining your towing plans. The adapter's weatherproof jacketing means it's built to withstand the elements, providing year-round reliability for all your towing needs. Whether you're setting off on a sunny drive or trudging through rainy weather, this adapter keeps working like a charm.
Tired of fumbling with slippery connectors? The easy-grip design of the Hopkins adapter ensures a comfortable hold, making it a breeze to attach and detach your connectors. Even with gloves on, you’ll find the process hassle-free, letting you hit the road quicker.
Keep connection corrosion at bay with tin-plated terminals on this adapter. This feature ensures that you don't have to worry about degradation from moisture, so your connections stay strong and reliable, trip after trip, providing the longevity and dependability trailers need.
The Hopkins adapter isn't picky—it works with any vehicle outfitted with a 7-way socket, making it perfect for flat towing a car or trailing a boat. It ensures your lighting signals are properly transmitted, keeping you legal and safe on the road, whether you're in a Dodge Durango or Audi Q5.
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hey everybody, Ryan here at etrailer. Today we're gonna be checking out the Hopkins trailer wiring adapter. So this is gonna let you go from a seven-way round type connector to a four-way flat type connector. What this is gonna do is really simple. It's gonna let you plug into your vehicle's seven-way round type connector and bring it down to a four-way flat. So the signals that it's gonna send back to your trailer will be your taillights, your brake lights, and your turn signals.
Now there's a ton of different adapters like this, or similar to this, available and you know, what this one will work good for is just about any situation really, but I could see it really becoming useful for those of you that tow multiple different trailers, you're not real sure what trailer you're gonna be pulling type deal. If your trailer wiring's kind of short, maybe you have a a real long ball mount or if your seven-way's in a kind of a funny spot like our 4Runner here today. So believe it or not, the seven-way is all the way kind of buried way over here on the driver's side. And even with this trailer's wiring, like, that's a pretty good length. You know, that's not short by any means.
There's no way that would even come close to being able to plug in. So by utilizing our adapter, I'll be able to, maybe, if I get to it here, plug it in, that'll give us all that extra length we need and then some, honestly. So I might be able to just kind of drape this over and allow you to make that connection and not have to worry about it coming disconnected when you make those turns and stuff, too. Since this is coiled, it'll stretch out when you make the turns or if you need that length and kind of gives you the freedom to kind of set things up how you want to. If you we're to stretch this cord out completely, the length that it's gonna give you is three feet.
So that should be more than enough for just about any situation you might find yourself in. If you don't think you're gonna need any additional length like this and you're looking for something a little bit different, what I would suggest is a real simple adapter like this. This is a seven-way, and then on the back there's just a four-way that'll allow you to plug in there. So that's always an option for you as well. And there's different variations to this as well.
So we just did one of these. It's a seven- to five-way flat type connector on this end. So if you got a a five-way type flat connector on your trailer, you can always check that out and that'll allow you to hook everything up and get it going. As far as the quality of this, I'm not gonna lie, I'm usually not super crazy about Hopkins stuff but like I said, I've been doing several of these wiring adapters and I actually like 'em, I think they're well built. The wires feel thick, you know, it has a good coating on it that's, you know, not super stiff but not super loose, so it'll stretch out when you need it to and whatnot. But more importantly, the connectors are really nice. They're not that brittle plastic like you'd usually see. They're almost a, almost like a hard rubber, I guess, if that makes sense. And what I like about 'em too is everything is sealed up up nice, for the most part. Like on some of the cheaper ones you'll see the wires kind of come in and it's just kind of cinched down. That's not the case with these. It's all molded almost, I guess you could say. And I like how on the ends they're somewhat reinforced, you know, like drops back some. 'Cause a lot of times it'll happen over years, you know, without this here there's no support there. Then the wires end up getting kind of tossed around like that and cause some connection issues, so this should hold up for some time. I like the thickness on the four-way side too. It gives you a good, you know, spot to actually grip and get it plugged in. So pretty impressed with it, actually, should definitely hold up. Gives you a little dust cover, too. So really no reason that this should give you any issues for quite some time. Other than that, at the end of the day, you know, there's really not a whole lot to it. Pretty simple part, but can be a great solution for a lot of people who are needing to get their four-way trailer hooked up to their vehicle that has a seven-way round style trailer connector. And that'll finish up our look at of the Hopkins seven to four-way trailer wiring adapter.
what i needed and fast service
just as listed
High quality,
Very nice, very high quality.
Nicely made
nice quality love the color
PRODUCT DELIVERED IN A TIMELY FASHION AND WAS AS PICTURED
The product I ordered is exactly what I wanted and will work perfectly. Your rapid response and fast shipping are great, I have already received my order and I am looking forward to using it.
Thank you.
Stays plugged in, cord stretches like it should and it is just all around perfect for my application.
Good quality product. I don't think taking the product out of original packaging just to keepe from buying direct or from another online vendor is a good practice. I buy from etrailer for other reasons.
Great service, good support, VERY fast! I've had great experiences with etrailer - this was not the case with other on-line trailer parts sites. Highly recommended.
I haven't used the product yet but would like to comment on etrailer's response to from my order placement to when I received my items, service was excellent and order was right on time. I have ordered from etrailer many times and will continue. Great Job Etrailer.
Works, exact fit, high quality, coils tight so max of about 3.5’ perfect! Heavy duty wiring, great waterproof connections.
Excellent product, fair price...exactly what I needed to complete my receiver hitch project.
Great product! Very well protected and heavy duty. The connections are well put together and have used several times in our long journeys.
Gwendolyn Y.
6/30/2025
Have any long journey's planned for the 4th of July weekend coming up, John?
Item was just as I anticipated. It looks good, works great, and the delivery was as promised. E Trailer is a good place to do business.
Neal W.
7/8/2017
Works as well as the day I bought it. No complaints. A great product.
Well made, only used a few times so far and it works great.
Just what I wanted
Very durable and
Well built.
Works great! No problems and easy to wrap around the tongue and keeps a good connection.
I needed a trailer lite adapter for my 4Runner to my boat trailer. This adapter was just what I needed and it worked great, just as expected. It's also high quality and reasonably priced. Keep up the great work etrailer.
Larry
2/22/2020
Still works great, I also use it when I tow my utility trailer.
Will work great around the water. Always backing the trailer to the river with multiple turns and have enough stretch to stay connected!
Needed a longer connector for my vehicles. Both have 7 way plugs, but I use a trailer with a 4 flat plug. The coiled adapter works great for both of the vehicles. Very good product if you need some extra length and the fact that it has the coils makes for a better appearance.
haven't hook it up yet. Looks like this solves the extra wire cable to light up the cargo carrier. No more wire cable hitting the road surface and no more cable wrappings around the long trailer hitch.
The tow-harness and components appears quite well made. Fit was perfect, installation was easy, and tested and worked the first time. The instructions, however, may have been more specific to earlier Pilots, thus were not entireley clear and caused some delay in installation.
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Glenn
3/21/2025
Still working as promised recoils no issues - as does your hitches, and wiring harnesses I’ve purchased fro ya! Great products, and video installation support!