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Hopkins Heavy-Duty Trailer Coiled Wire Adapter for 7-Way to 4-Wire Flat

Hopkins Heavy-Duty Trailer Coiled Wire Adapter for 7-Way to 4-Wire Flat

Item # HM47065
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This heavy-duty, coiled cable adapter is compatible with a 7-way RV blade trailer socket on the vehicle and adapts it to work with a 4-wire flat connector on the trailer. Lowest Prices for the best trailer wiring from Hopkins. Hopkins Heavy-Duty Trailer Coiled Wire Adapter for 7-Way to 4-Wire Flat part number HM47065 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (126)
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Hopkins Trailer Wiring - HM47065

  • Wiring Adapters
  • Single-Function Adapter
  • 4 Flat
  • Plug and Lead
  • 0 - 5 Feet Long
  • 7 Round - Blade
  • Hopkins

This heavy-duty, coiled cable adapter is compatible with a 7-way RV blade trailer socket on the vehicle and adapts it to work with a 4-wire flat connector on the trailer.


  • Heavy-duty, coiled cable
    • Weatherproof jacketing
  • Easy-grip connectors
  • Tin-plated terminals for corrosion resistance


  • 3' Cable when stretched
  • 7-Way RV blade to 4-wire flat

Flex Coil Adapters provide increased durability and the additional length that may be necessary to reach between the tow vehicle's socket and the trailer/towed vehicle's plug.

47065 Hopkins Trailer Connector Coiled Adapter, 7-Way to 4-Way

California residents: click here

Video of Hopkins Heavy-Duty Trailer Coiled Wire Adapter for 7-Way to 4-Wire Flat

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Review of Hopkins Wiring - Wiring Adapters - HM47065

Jeff: Hello everybody, this is Jeff at Today, we're going to take a look at this Hopkins heavy duty flex coil trailer wire adapter, for a 7-way blade to a 4-way flat. now, this heavy duty coiled cable adapter is compatible with a 7-way RV blade trailer socket on your vehicle, and adapted to work with a 4-way flat connector on the trailer.This is a nice flex coil design, provides increased durability, and it gives you additional length that may be necessary to reach between the tow vehicle socket and the trailer tow vehicle's plug. It does stretch to about three feet in length.It does use the molded connectors, you can see right here, and they do a built-in strain relief on each one. You can see right here, it keeps the wire from being strained and possibly broken or torn. Same way on this one, it has a nice strain relief.

Does use weatherproof jacketing, and these are easy grip connectors. You can see on the 7-way, it has the finger grip help you install it and remove it. And on the 4-way end, it has a nice ergonomic hand grip on the 4-way, to plug it in or remove it.It does use tin plated terminals for corrosion resistance. And if you notice on the 4-way end it includes this tethered dust cover, so when it's not connected, it'll protect those terminals. Again, we mentioned it's stretched length is about three feet, and it is a 7-way RV blade to the 4-way flat connector.That should do it for the review on the Hopkins heavy duty flex coil trailer wire adapter, for the 7-way blade to a 4-way flat..

Customer Reviews

Hopkins Heavy-Duty Trailer Coiled Wire Adapter for 7-Way to 4-Wire Flat - HM47065

Average Customer Rating:  4.8 out of 5 stars   (126 Customer Reviews)

This heavy-duty, coiled cable adapter is compatible with a 7-way RV blade trailer socket on the vehicle and adapts it to work with a 4-wire flat connector on the trailer.


Haven't got to use adapter very impressed with the construction of this product, will be perfect for what the use will be. Have a newer and larger truck my trailer connections are too short with out the wire adapter.


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.

Works as well as the day I bought it. No complaints. A great product.
Neal W - 07/08/2017


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.

Still works great, I also use it when I tow my utility trailer.
Larry - 02/22/2020


Works great and highly recommend


Will work great around the water. Always backing the trailer to the river with multiple turns and have enough stretch to stay connected!


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.


I have yet to make a connection from truck to trailer harness, however I anticipate functionality since the HM47065 Adapter is very well constructed. Thank you


looks like a nice adapter i haven't used it yet i just received it on monday will tell you more after july 1


I always look forward to working with etrailer. They sell quality products and provide “old school” customer service...Thanks!


Bridges the gap nicely between the utility and small boat trailers I use and the offset light socket on my 2009 4Runner. Really heavy construction; it feels like it'll last a long, long time.


Great selection of quality parts at unbeatable prices. Expedient shipping and exact application for my towing needs. Will definitely be a return customer.
Thank you


Useless- how many towed vehicles are within the three foot length of this cable? Do not order this with the wiring kit for your towed vehicle that lets you use the vehicles tail lights instead of the magnetic lights. The tow bar between your motorhome and the "toad" is around 4' long. I'm not sure what this can be used for.


Perfect design! The bright color acts as a reminder not to leave it plugged in when I'm done trailering. The coil design extends and contracts with the movement of the truck.


Products were delivered with very short wait time.

Adapter cable HM47065 is a replacement of the original cable purchased for towing in 2012.

Socket HM48480 is a replacement of the socket that was on the motor home when purchased used in 2012.

They haven't been installed yet, but I don't expect any issues.



I purchased one of these back in 2010 when I bought my new Nitro boat. This is one of the best products I have ever used. I have never had any issues with it and I can leave my lights hooked up when I back in with no problems with water. I purchased this one in 2017 due to someone stealing mine from my trailer in one of the parking areas so I suggest securing it in you vehicle. Again a great product.


Product worked as described and is well made. Like the coils as this prevents the wire harness from dragging on the ground while allowing harness to stretch during turns.


This is just what I was looking for. It works perfect for my trailer and car carrier. It's heavy duty. The shipping was fast. I looked at other ones,but none as good as this for the price.I will buy from trailer again.


This was a prompt and satisfactory transaction with delivery in three days. The merchandise is a quality trailer light connector. I highly recommend for anyone needing trailer accessories.


Added to Con fab trailer to make a more durable connection.


Perfect for your new SUV with a 7 pin electrical connector, so you can connect to that 4 pin trailer.


I have ordered from etrailer five times and each every time I am impressed. The prices are the lowest out there, shipping is exceptionally fast and their selection is beyond equal. I won't buy from anyone else, why should I?


Cable is barely long enough to reach my Jeep when towing it behind my motorhome, they could have been just a bit longer. Sturdy cable


Product is well built and of quality construction. Shipping w as fast and efficient. I am very pleased with the trailer hookup and


This was perfect for me!

Show More Reviews

Ask the Experts about this Hopkins Trailer Wiring

  • Will Hopkins Heavy-Duty Trailer 7-Way to 4-Wire Adapter # HM47065 Activate Brakes on Trailer
    The Hopkins Heavy-Duty Trailer 7-Way to 4-Wire Adapter # HM47065 is intended to plug in to a tow vehicle 7-way socket, take its lighting signals only (not a brake signal or 12V power) and route them to the 4-pole flat connector. When an adapter reduces the number of wires it also reduces the number of electrical circuits and therefore the number of functions. A trailer with electric brakes will need to have at least a 5-pole wiring harness (one more wire to provide one more function) as...
    view full answer...
  • Will Hopkins Heavy-Duty Trailer Coiled Wire Adapter for 7-Way to 4-Wire Flat Fit 2015 Jeep Cherokee
    If your 2015 Jeep Cherokee Trailhawk has a 7-Way trailer connector on it then yes, the Hopkins Heavy-Duty Trailer Coiled Wire Adapter # HM47065 will plug right in and provide some extension and a 4-Way flat to plug in a trailer. I have linked a video review of this adapter for you. We have a lot of 7- to 4-Way adapters. Some have an extension and some do not. I have included a link to the options for you.
    view full answer...
  • Flat Towing a Vehicle with a 4-Way Connector for Lighting Using 7-Way Trailer Connector on RV
    If your vehicle being flat towed is wired with a 4-way to power its lights from the RV with a 7-way trailer connector you can use the Hopkins Coiled Wire # HM47065.
    view full answer...
  • Tow Bar Wiring Recommendation for 2001 Ford Ranger
    For tow bar lighting for your 2001 Ford Ranger you would want the Hopkins Kit part # HM56004 which is a custom fit setup for your vehicle. The connectors plug inline with the taillight connectors on your truck and allows your RV to control them. If your tow vehicle has a 7-way you would want the part # HM47065 to use as an umbilical adapter to span distance between RV and Ranger.
    view full answer...
  • Replacement 7-Way Trailer Connector for 2011 GMC Yukon
    That's actually a 7-way you sent in a picture of as the center pin counts as the 7th one. So what you'd need for a replacement is the part # HM40920 which is the same style of twist lock 7-way and also comes with a 4-way as a bonus.
    view full answer...
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  • Is There a Different Sized Plug Version of the Wesbar 787207?
    The simple answer to this is going to be no, because trailer connections adhere to an industry standard in order to ensure compatibility between different manufacturers and for end user convenience. Trailer connector adapters like the Wesbar # 787207 will be the same size as something like the Hopkins # HM47065 -they are all going to have the same dimensions assuming they're the same type of connections (7 flat, 4 or 5 blade, etc.). For these reasons, the 7 way end on the Wesbar # 787207...
    view full answer...
  • Connecting 4-Way Flat on Jeep to 7-Way on Camper
    I do have a solution for you, however the Hopkins Heavy-Duty Trailer Coiled Wire Adapter # HM47065 won't work to connect the 4-Way flat on your Jeep to the 7-Way on your new camper. This is because the 4-Way on your Jeep will be the female end of the connector, which is identical to the 4-Way on this adapter. The male end will be on the trailer side. This just means the adapter won't physically plug into your setup because they are matching, instead of corresponding/compatible, plugs. To...
    view full answer...
  • Brake Lights Not Working When 2013 Audi Q7 is Hooked up to Boat Trailer
    On the trailer side of wiring the stop signal is connected to both the left and right turn signals. Because your turn signals are working I don't believe that the problem is the Hopkins Adapter 7 Pole to 4 Pole with Tester and Cover # 47345. The problem is most likely that the trailer has a bad ground or the harness is being overloaded when you connect your trailer to your 2013 Audi Q7. The only way that the connector would be the issue is if it was damage in some way or if the connectors...
    view full answer...
  • 7-Way to 4-Wire Adapter Cord With 8' of Length
    Yes, as the Hopkins Heavy-Duty Trailer Coiled Wire Adapter for 7-Way to 4-Wire Flat part # HM47065 is only 3' long, you will want to use the Wesbar Coiled Adapter 7-Way RV to 4-Way or 5-Way flat part # 787196 as this cord is 8' long. Both coiled adapters offer a 7 to 4-way conversion. I have included a video review of this product for you.
    view full answer...
  • 7-Way To 4-Way Adapter Recommendation For 2003 Hummer H2 Towing A Rented Trailer
    Since the owner's manual on your 2003 Hummer H2 states it has a universal 7-way connector on the back, we have an adapter that will work fine for you. I recommend the Hopkins Heavy-Duty, Coiled Trailer Connector Adapter, part # HM47075. This connects to the 7-way on your Hummer and gives you a 4-way connector to connect the trailer to. As long as the 4-way connector on the trailer you are renting has the standard 4-way flat connector attached, using the # HM47075 should take care of your...
    view full answer...
  • Adapter for 7-Way or 6-Way to Plug Into 4-Way on Vehicle Being Flat Towed
    I'm sure we have what you need but I'm not certain exactly what trailer connector you have on your Bobtail truck. It looks like there are a number of potential options for the type of connector you might have, so what I can do is give you the options for an adapter so you can choose the right one. - 6-Way Round: Hopkins Endurance Flex Trailer Connector Adapter - 6-Pole to 4-Pole # HM47320 - 7-Blade: Hopkins Heavy-Duty Trailer Coiled Wire Adapter for 7-Way to 4-Wire Flat # HM47065 - 7-Round:...
    view full answer...
  • 7-Way to 4-Way Adapter Recommendation
    I have a better solution for you, but technically the part # HM47065 that you referenced would work go from a 7-way to a 4-way connector. What would be a better solution would be the part # PK12716. This will plug right into your 7-way and will allow you to connect your 4-way to it.
    view full answer...
  • 7-Way Recommendation to Replace 4-Way on a Trailer
    Sounds like you have a trailer that currently has a 4-way and a tow vehicle that has a 7-way. Based on what you said you are looking for the part # PK12706 would be what you would need. I attached a help article on trailer wiring for you to check out as well.
    view full answer...
  • 7-Way to 4-Way Adapter for a 2016 Honda Pilot with Factory 7-Way Trailer Connector
    You could use 7- to 4-Way adapter # HM47065 if you need the extra 3 feet of length the coiled cable provides. If you do not need the extra length you could use adapter # PK12716 and the trailer's 4-Way would plug into the back of it (which would be plugged into the 7-Way). I have linked video reviews of both adapters for you.
    view full answer...
  • Is Hopkins # HM47065 7-Way to 4-Pole Adapter Compatible with 2015 Toyota Tacoma
    The Hopkins # HM47065 is not a vehicle specific item, it will work in the 7-way of any vehicle and allow a trailer or flat towed vehicle with a 4-pole flat connector to receive lighting signals from the tow vehicle. The # HM47065 would typically be used for flat towing a vehicle, while an adapter like part # PK12716 would usually be used for a trailer. If you'd care to see a product description video featuring the Hopkins Adapter, please click the provided link.
    view full answer...
  • Available 7-Way to 4-Pole Trailer Wiring Adapters
    We do offer trailer wiring adapters that can allow connecting different wiring formats such as a 4-pole and a 7-way. But as you noted, if you convert 7-way vehicle wiring down to 4-pole trailer wiring you do naturally lose 3 circuits: 12V auxiliary power, reverse lights and trailer brake power. All such adapters are shown on the linked page. I suggest using a cable type adapter like # HM47065 since it provides strain-relief, unlike the solid adapters such as # PK12716.
    view full answer...
  • 7-Way to 4-Pole Tow Bar Wiring Adapter Needed to Connect RV to Vehicle
    The adapter needed will depend on which 4-pole connector is used on the vehicle. For a 7-way to 4-pole flat connector, use part # HM47065. If the 4-pole connector has the round plug, use the 7-way to 4-pole round adapter, part # HM47043.
    view full answer...
  • Recommended 7-Way to 5-Way or 4-Way Flat Adapter That Measures 3-Ft Long
    For a 7-Way to 5-Way or 4-Way Flat connector I recommend part # HM47075. This adapter will work with a 4-way or a 5-way and has Nite-Glow which lets you know you are connected and working. This has a coiled cable which measures 3-ft when stretched.
    view full answer...
  • Trailer Wiring Adapter to Join Truck 7-Way with Trailer 4-Pole Connector
    It sounds like your Durango has what we call a 7-way blade type trailer socket, which is shown in the linked photo. This common trailer connector uses flat or blade type contacts. We offer adapters to join this type of connector to the 4-pole you have on your trailer and you can see all on the linked page. For example, Pollak # PK12716 plugs in to your Durango's 7-way and provides a connection point for the trailer's 4-pole wiring harness. Others like the coiled-cable adapter # HM47065...
    view full answer...
    Image 1 for
  • Are RV 7-Way to 4-Pole Wiring Adaptors Vehicle-Specific
    Trailer wiring adapters like Hopkins # HM47065, Pollak # PK12716 and Hopkins # HM47365 are not vehicle-specific products. They will work on any vehicle that has the appropriate connector. The coiled wire adapter # HM47065 that you referenced combines a trailer-side (male) 7-way RV-style plug (that mates with the 7-way socket on your Ram 3500) with a vehicle-side 4-pole flat type plug. This wiring adapter carries only lighting signals (stop, turn and tail) but not other functions like auxiliary...
    view full answer...
  • 7-Way to 4-Pole Wiring Adapter to Allow Use of Pilot Oval LED Brake Light Hitch Cover CR-017
    It sounds like your 2014 Toyota Tacoma has a 7-way RV-style blade trailer connector, like the part shown in the linked photo. To connect this type of trailer wiring to the 4-pole flat type used on the Pilot Oval LED Brake Light Trailer Hitch Receiver Cover # CR-017 you will need an adapter such as # HM47065, or # HM47365. These and all such adapters are shown on the linked page.
    view full answer...
    Image 1 for
  • Coiled 7-Way to 4-Way Recommendation for Towed Vehicle
    Yes, we have the Wesbar # 787196 which is an 8 foot long 7-way to 5-way. I know you need a 4-way but this will work well as the fifth circuit would just not be used.
    view full answer...
    Image 1 for
  • Changing a 7-Way to a 7-Way and 4-Pole Connector on a 2014 Toyota Tacoma
    I do have a solution for you, but there are no adapters that plug into a 7-Way and then have 7-Way and 4-Pole connector plugs. You can do 1 of 2 things. You can either use an adapter like the Hopkins # HM47065 or you can change out the 7-Way connector on your 2014 Toyota Tacoma for the Hopkins # HM48470 which will give you both the 7-Way and 4-Pole connectors. I recommend going with the 2nd choice (part # HM48470) since it is a permanent solution that will accommodate both trailers and...
    view full answer...
    Image 1 for
  • Best 7-Way to 4-Way Adapter for Salt Water
    For a 7-way to 4-way adapter I recommend the Pollak 7 Pole to 4 Way Connector Adapter # PK12716. This adapter has a non-corrosive nylon shell so salt water would not be a concern. If you need an adapter that is more than just a plug and has some extra cable, I recommend the Hopkins Heavy-Duty Trailer Coiled Wire Adapter # HM47065. This adapter has a heavy-duty coiled cable with weatherproof jacketing that stretches up to 5' in length. It also has tin-plated terminals for corrosion resistance....
    view full answer...

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