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Hopkins Endurance Easy-Pull 4-Flat Extension w/ 2 Grip Rings - Vehicle and Trailer Ends - 24"

Hopkins Endurance Easy-Pull 4-Flat Extension w/ 2 Grip Rings - Vehicle and Trailer Ends - 24"

Item # HM47004
Our Price: $10.86
You Save: 55%
Trailer Wiring
Shipping Weight: 0.29 lbs
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Increase the length of your 4-way flat connection by 24" with this extension loop. Large grip rings on both ends provide maximum leverage and grip when disconnecting. Plugs into your existing 4-way flat connectors. Great Prices for the best trailer wiring from Hopkins. Hopkins Endurance Easy-Pull 4-Flat Extension w/ 2 Grip Rings - Vehicle and Trailer Ends - 24" part number HM47004 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (51)
  • Q & A (0)
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Hopkins Trailer Wiring - HM47004

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

Increase the length of your 4-way flat connection by 24" with this extension loop. Large grip rings on both ends provide maximum leverage and grip when disconnecting. Plugs into your existing 4-way flat connectors.


  • 4-Way flat extension loop increases the length of your wiring connection by 24"
    • Plugs into the 4-way flat connectors on your vehicle and trailer
  • Easy-to-pull rings on trailer and vehicle ends make 4-way easy to disconnect
    • Ring handles make it easy to pull connectors straight back for proper leverage
      • No wiggling plugs or damaging terminals
    • Wide handles make it easy to grip connectors
  • Corrosion-resistant terminals are long-lasting
  • Comes with 1 dust cap and a terminal grease packet for electrical connections


  • Ring inner diameter: 1"
  • Ring outer diameter: 1-7/8"
  • Wiring harness length: 24"
  • Wire configuration:
    • White: ground wire
    • Yellow: left turn/brake light
    • Green: right turn/brake light
    • Brown: tail lights
  • 3-Year limited warranty

Easy-Pull Ring Handles Are Easy to Grip and Pull

Easy Pull

Standard 4-way flat plugs have a small surface area to grip when you are pulling them apart, forcing you to wriggle the plugs back and forth to loosen them. Some users even pull on the wires. This can lead to broken terminals or ripped wiring. With the Easy-Pull extension loop adapter, each plug has a large grip ring designed to make disconnecting a snap. Simply slide your finger into the ring and pull the plug away from the opposite plug to disconnect.

Easy Pull Rings

The Easy-Pull is also available as a single trailer-end or a single vehicle-end 4-way flat plug. Combine this Easy-Pull extension with either the vehicle-end plug or the trailer-end plug for the easiest possible disconnection. With ring handles on both connectors, disconnecting is as simple as gripping the rings and pulling straight apart. No wriggling, no broken terminals, and no damaged wires.

47004 Hopkins Easy Pull 4-Pole Flat Extension Loop - Vehicle End and Trailer End Ring Handles - 2' Long

California residents: click here

Customer Reviews

Hopkins Endurance Easy-Pull 4-Flat Extension w/ 2 Grip Rings - Vehicle and Trailer Ends - 24" - HM47004

Average Customer Rating:  4.8 out of 5 stars   (51 Customer Reviews)

Increase the length of your 4-way flat connection by 24" with this extension loop. Large grip rings on both ends provide maximum leverage and grip when disconnecting. Plugs into your existing 4-way flat connectors.


Just what I needed to extend the trailer wiring and now I have trailer lights. A former owner had cut the existing plug off to use on a different trailer, when I re-wired the plug end I needed a little more length to make a good fit.



Only used it a couple of times since hooking it up but works great


etrailer has it ALL !!
Very easy to deal
with and excellent service !


Product is exactly as I wanted and accurately described. The large finger rings make pulling the 4 flat extension much easier and with less risk of damage to the wiring harness connections. This extension is a tiny bit more expensive than a plain flat plug but it is worth the difference if, like me you have to pull the wiring harness connections after each use of the boat trailer. Buy this!

David C.


I havent used it yet this year, but I used the extension all last summer and it worked perfectly.


great product.


The extended terminals with the ring for a grip is especially helpful when using with a newer pickup plug.
With the standard trailer wiring my thumb leaks blood every time I unhook. I purchesed this to cut down on my need for band aids.

Gary W.


Still working great... wouldnt trade for them.


These guys are great and all the parts I have ordered have worked perfect. Just installed a hitch and wiring kit and every thing was easy and works. I have not installed this trailer wire connecter but it looks heavy duty and well made and I am sure it will work fine. Thanks


Excellent product for the best price around. The grab rings make the process of hooking up trailer lights so much easier. 24" inch length was perfect to attach trailer lights to truck using a 32" extension hitch receiver. Shipping was fast. Glad I ordered.


Excellent pull ring design for quick connection and disconnect. I purchased for the convenient 2 foot length. I’m happy with this 4-way wiring.



Working very well love the finger pull design.


I like how the product is so easy to disconnect. It is easy to store and works as expected. The one issue I have is connecting. The single pin part of the connector is difficult to get started for connecting my trailer wiring. This is similar to most connectors of this kind so I cannot be too suprised or disappointed.


These are just brilliant. I don't know why it took so long to figure this one out. I permanently attached the existing trailer wires just long enough to attach this extension. If the cable gets wrecked, I only have to replace the extension, not rewire the trailer. That system has been working very well so far also.


A good product at a fair price. The rings make it much easier to plug in and unplug the wires/harness. When it is difficult to plug in and unplug the wires there is a greater probability that something is going to get damaged. If you have had that problem you know what I mean.


Very useful product as the connection/ disconnection process of a trailer is frustrating at times when the connector is dirty or sandy. This particular unit is easy to install and use and makes attaching and de-attaching the wires very easy.


Perfect for covering the gap between my wiring harness on the cargo carrier and the plug in on the car.


Arrived extremely fast, securely packaged and just as described. It's very easy to disconnect the way it's made, plus it looks nice. I'm very satisfied and will do business again with etrailer.


Easy to use - high quality product.


Exactly what I needed to extend my trailer lighting harness


Needed to extend a bit more on my connection and this fit the bill.


Great extension piece



The wiring kit was so simple to install and after using it for a year still have no problems and works great. Ty


Works as it should, I like the finger h olds


Great item from a great company. Item is handy with lite hook up and testing. Looking for more good usable items from etrailer


Excellent service. I called and explained what I needed. Person quickly understood what I needed and directed me to product on their website. Product arrived in excellent condition and met my need perfectly. Thank you.


Iteam was a described, I have not used it yet.


Exactly what I was looking for to extend my (semi) hard to reach plug-ins on my 4Runner!



Still working great after a year!


Works great wish they would of came out much earlier years ago





Exactly what I was looking for. Fast shipping and great service!

Show More Reviews

See what our Experts say about this Hopkins Trailer Wiring

  • What Gauge Wire Does Hopkins Endurance Easy-Pull 4-Flat # HM47004 Use
    The gauge wire used in the Hopkins Endurance Easy-Pull 4-Flat Extension w/ 2 Grip Rings # HM47004 is 16 gauge.
    view full answer...
  • Solution for Needing 4-Way Male to Female Adapter Near 18 inches in Length
    The best solution we have is the part # HM47004 which is 24 inches long but has a 4-way male on one end and 4-way female on the other end.
    view full answer...
  • Recommended Extension for Trailer 4-Way Flat Connector
    It sounds like you're looking for an extension for your 4-Way connector, and for that I recommend the Hopkins Endurance Easy-Pull 4-Flat Extension w/ 2 Grip Rings # HM47004. These have a loop in the connector so it's easier to disconnect them than a standard 4-Way connector. Attached is a review video for you to check out. If you're looking for something different just let me know and I'll be happy to look into it more for you!
    view full answer...
  • Will 4-Way Harness Connectors of Malone Trailer Get Easier to Use Over Time
    Using some dielectric grease like the part # 11755 will help get the connectors easier to plug in and unplug but also over time they will become easier to disconnect and connect so it's going to get easier.
    view full answer...
  • Trailer Connector Extension to Make it Easier to Plug in Trailer to 2014 GMC Truck
    To make it easier to reach the 4-way connector on your 2014 GMC we have a 4-way trailer connector extension by Hopkins that's 1 foot long, # HM48144, or 2 feet long, # HM47004. Both of them plug into the existing 4-way and just extend it further out from under your truck's bumper. You can leave the extension plugged into the truck and use the included terminal grease to help protect it.
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  • Adding Fold Away Hinge To Front Of Trailer and Extending Tongue 12"
    If you add on the 12" extension to the front of the Fulton Fold-Away Coupler Hinge Kit # FHDPB330301 this will change your tongue weight slightly as well your maneuverability may be different as well. Otherwise there is no issue attaching the hinge in the manner you are wanting. Be sure to get a 4-Flat Extension # HM47004 for the lighting as your current wiring will likely not be long enough to reach the connector after you extend the coupler.
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  • Recommended 4-Way Flat Wiring Extension for Lighted Accessory
    For a 4-way trailer wiring extender, I recommend the Hopkins 4-Pole Loop - 12" Long # HM48145. If you need a slightly longer extender than that, I recommend the Hopkins Endurance Easy-Pull 4-Flat Extension w/ 2 Grip Rings - Vehicle and Trailer Ends - 24" # HM47004.
    view full answer...
  • What Lengths Are The 4-way Flat Extension Harnesses Available In?
    It sounds like you are looking for a 4-way flat extension harness. I recommend the Hopkins Endurance Easy-Pull 4-Flat Extension 12" # HM48144. 24" # HM47004, or 48" # HM47114. These extensions will plug into the 4-way flat connector on your tow vehicle and the connector on your trailer and have an easy pull finger loop to make disconnecting the harness even easier. If this is not the extension you meant just let me know. I included videos for the products mentioned for you to take a look at.
    view full answer...
  • Will a Wiring Harness Extension Work with the Curt Vehicle Wiring Harness Part # C55372
    The 4-way wiring harness extension I recommend for the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # C55372 on your 2002 Suzuki Grand Vitara is the Hopkins Endurance Easy-Pull 4-Flat Extension part # HM47004 which measures 24". I reached out to my contact at Curt and they stated that you should have absolutely no problems using this extension with your wiring harness. If you do have troubles please let me know what those are and I would be happy to offer...
    view full answer...
  • Mounting 4-Way Extension on Factory Hitch of 2021 Toyota 4Runner
    Thanks so much for the photos, and there may be an option for your 2021 Toyota 4Runner which will allow you to mount the 48" Long 4-Pole Loop with Cover # HM47115. I can't quite tell if the section the hitch is attached to has an opening above it, but if so, you could mount brackets just to the left of the hitch with the No-Drill Mount # 18140 and Mounting Bracket 4-Pole Flat # 18144. If there is not an opening that allows you to attach the No-Drill Mount, the only option I can see would...
    view full answer...
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  • Is Wiring Extension Needed for Adding LED Light Kit to Thule T2 Classic 4-Bike Rack
    The wire lead for the LED Light Kit # 98174LED you're looking at is 46" long from the driver's side. Your Thule T2 Classic Bike Rack for 4 Bikes TH9044-TH9046 measures 55" from the center of the hitch pin hole to the farthest edge of the rack so you should be able to add the 12" Extension # 9653P and be good but this all depends on where you place the lights and where exactly your 4-Way connector is on your 2018 Honda CR-V. If you want some extra wire so you can route it a little easier...
    view full answer...
  • Will Extending a Swing Away Trailer Tongue Make It Easier To Maneuver a Boat Trailer in Reverse?
    Yes, if you were to extend your trailer tongue 18" it would make steering your trailer easier in reverse. It can be difficult to steer shorter trailers as they can quickly steer so far you can not correct it without pulling back forward to straighten out the trailer. Something that can really help you is using CE Smith Post-Style Guide-Ons with LED Lights # CE27740 on your trailer. These allow you to more easily see where the trailer is and stay ahead of it while you are steering. In...
    view full answer...
  • 4-Way Flat 24 Inch Extension Recommendation
    For a 24" 4-Way Flat extension we have the Hopkins Endurance Easy-Pull # HM47004. I like this design because there is a big loop for the connector so it's easier to disconnect the 4-Way ends instead of chancing some damaged wiring. If you'd rather use a standard 4-Way extension then you can use the part # 18044 you mentioned and just bundle some of it up with a zip tie, like what we find with the kit # DW05724-10, to take up the slack. Attached is a review video for you to check out.
    view full answer...
  • 4-Way Prong Wiring Needed That is 8' Long
    If you are looking for just an extension then the Hopkins 4-Pole Flat Wiring Extension # HM48235 that you referenced is 10' long and will be exactly what you are needing. For a flat towing application we have the common 4-Way round connectors like part # HM47046 which is 8' long or for a 4-Way flat connector you would need both the part # RM-300150-00 (6') and the part # HM47004 (2'). Let me know if you are looking for something different and I can make a recommendation for you.
    view full answer...
  • 4-Pole Wiring Extension for Connecting Reese RAM Lighted Hitch Cover RP86531 on 2015 Ram
    If you want to install the Reese RAM Lighted hitch cover # RP86531 and its 16-inch-long 4-pole wiring harness is not quite long enough to reach your truck wiring you can simply use an extension. We have 4-pole extensions in many lengths, such as the 12-inch # HM48148, 24-inch # HM47004 and 48-inch # HM47114. We also have a 10-foot extension # HM48235 but this one does not have the special Hopkins Easy-Pull connectors found on the other extensions listed.
    view full answer...
  • Available Lengths of 4-Pole Trailer Wiring Extensions
    We do offer 4-pole extensions that can be used with the Tow Ready 7-Way to 5-Way/4-Way Trailer Adapter for Vehicles with Lamp-Out Sensors Towing Trailers with LEDs # TR20141. We have 4-pole extensions in many lengths including the 10-foot # HM48235, 4-foot # HM47115 and # HM47114, and 2-foot # HM47004.
    view full answer...
  • Availability of 4-Way to 4-Way Extension Harness
    We do have 4-way to 4-way extensions in a few sizes. Like with the part # HM47114 for 48 inches, part # HM47004 for 24 inches or part # HM48144 for 12 inches. We also have 6 foot part # RM-300150-00.
    view full answer...
  • Recommended Roof Rack for a 2024 Chevy Traverse w/ Flush Mounted Rails
    Yes, we do. To add a set of crossbars to your 2024 Chevy Traverse's flush mounted rails, you will want the roof rack by Yakima which includes the following parts: Yakima SkyLine FX Roof Rack for Fixed Mounting Points - JetStream Aero Crossbars - Black - Qty 2 item # Y66UV Landing Pad 19 for Yakima SkyLine and Control Towers - Qty 4 item # Y00245
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  • LED Lighting Kit and Mounting Brackets for Saris MTR 4 Bike Bike Rack
    I would be happy to help you set up your rear light kit item # 98174LED. I just called my rep at Saris to get the total length of your MTR Bike Rack for 4 Bikes. He said that bike rack is 56" long from the hitch to the back of the last extension. The LED Light Kit item # 98174LED has an overall length of 88" but the driver's side portion looks to be shorter as it comes out of the y at only 46". I recommend the Hopkins Endurance Easy-Pull 4-Flat Extension item # HM47004. This is a 24" extension...
    view full answer...
  • Hitch Extender for Towing Small Trailer
    As long as you are staying within the manufacturers specification in regards to the weights you will be perfectly fine. The Curt Extender # C45796 has a tongue weight capacity of 350lbs and 3500lbs towing or 50% of hitch capacity, whichever is less. In your case for your 2014 Subaru Outback that would be 300lbs tongue weight and 2150lbs towing. You will also more than likely need a Wiring Extension # HM47004 as well as Safety Cable Extensions # RM-910648-20. Be sure to keep these secured...
    view full answer...
  • Camper Tie-Downs For a 2016 Nissan Frontier Crew Cab With Factory Receiver
    The only camper tie downs we have for your 2016 Nissan Frontier Crew Cab with the 5' bed and factory hitch is the TorkLift Rear # TLN3403. These use existing mounting holes to mount and will not require any drilling for installation. The TorkLift Locking FastGun Turnbuckles # TLS9529 are the turnbuckles I recommend. These are made of stainless steel and have a black finish for securing your slide in camper to your Frontier. The Curt 18" Extender # C45796 is our longest hitch extension...
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Do you have a question about this Trailer Wiring?

Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Dustin K
Video Edited:
Dustin K
Employee Cole B
Installed by:
Cole B
Employee Shane H
Installed by:
Shane H
Employee Alexander C
Written by:
Alexander C
Employee Zach D
Video by:
Zach D

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