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Hopkins Endurance Easy-Pull Harness w/ 4-Pole Flat Connector - Trailer End - Jacketed - 48"

Hopkins Endurance Easy-Pull Harness w/ 4-Pole Flat Connector - Trailer End - Jacketed - 48"

Item # HM38134
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Easily disconnect this 4-way flat trailer-end plug from your vehicle without damaging the terminals. Large grip ring provides maximum leverage when disconnecting. Harness splices into your trailer's wiring. Durable cable covering resists damage. Lowest Prices for the best wiring from Hopkins. Hopkins Endurance Easy-Pull Harness w/ 4-Pole Flat Connector - Trailer End - Jacketed - 48" part number HM38134 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (9)
  • Q & A (12)
  • Videos (2)
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Hopkins Wiring - HM38134

  • Trailer Connectors
  • Trailer End Connector
  • 4 Flat
  • Plug and Lead
  • Hopkins
  • 0 - 5 Feet Long
  • Grip Rings

Easily disconnect this 4-way flat trailer-end plug from your vehicle without damaging the terminals. Large grip ring provides maximum leverage when disconnecting. Harness splices into your trailer's wiring. Durable cable covering resists damage.


  • 4-Way flat trailer-end connector plugs into the 4-way flat on your vehicle
  • Easy-to-pull ring makes 4-way easy to disconnect
    • Ring handle makes it easy to pull connector straight back for proper leverage
      • No wiggling plugs or damaging terminals
    • Wide handle makes it easy to grip connector
  • Protective cable sleeving is durable and insulated
  • Simple installation - hardwire to existing trailer wiring
  • Corrosion-resistant terminals are long-lasting


  • Ring inner diameter: 1"
  • Ring outer diameter: 1-7/8"
  • Wiring harness length: 48"
  • 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 Handle Is 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 harness, the 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 vehicle-end 4-way flat plug. Combine the Easy-Pull trailer-end plug and vehicle-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.

38134 Hopkins Easy Pull 4-Pole Flat Trailer Wire Harness with Jacketed Cable - Trailer Side - 4' Long

California residents: click here

Video of Hopkins Endurance Easy-Pull Harness w/ 4-Pole Flat Connector - Trailer End - Jacketed - 48"

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

Video Transcript for Hopkins Wiring - Trailer Connectors - HM38134 Review

Speaker 1: Today we're gonna take a look at the Hoptkins Endurance 48 inch, easy pull harness with the four way flat trailer end connector. Now this four way flat trailer end connector will plug into the four way flat on your vehicle. It has a nice easy to pull ring here. Make the four way easy to connect from your vehicle. The ring handle makes it easy to pull it straight back for proper leverage. There's no wiggling the plugs or damaging your terminals.

The handle makes it a very easy to grip connector. It does use a protective table sleeving, which is durable and insulated and it's a very simple installation. You just hard wire this end to your existing trailer wiring. Does use corrosion resistant terminals for long lasting protection.And a few specs on this. The inner ring diameter is gonna be right at 1 inch, overall on the whole handle is about 1 7/8 inches.

We had mentioned the harness length is 48 inches and the wire end configuration, the white wire would be for your ground, the yellow would be for your left turn and brake light, green would be for your right turn and brake light and the brown would be for your tail lights. But that should do it for the review on the Hopkins Endurance 48 inch easy pull harness with the four way flat trailer end connector.

Customer Reviews

Hopkins Endurance Easy-Pull Harness w/ 4-Pole Flat Connector - Trailer End - Jacketed - 48" - HM38134

Average Customer Rating:  4.9 out of 5 stars   (9 Customer Reviews)

Easily disconnect this 4-way flat trailer-end plug from your vehicle without damaging the terminals. Large grip ring provides maximum leverage when disconnecting. Harness splices into your trailer's wiring. Durable cable covering resists damage.

- HM38134

This is a great product, solid and great quality. Three things that would help the consumer. First thing would be to add solder-less connectors. Next thing would be to have about 6-8” of exposed wire to work with when coupling. And last thing would be to furnish a dust cover for the plug end. 703192

- HM38134

The wiring was just what I needed and the shipping was quick. I will definitely be using etrailer more in the future. 659825

- HM38134


- HM38134

Nice idea. I haven't installed yet. Got as a spare but like the design. 699830

- HM38134

Well made unit that makes it easier to connect and remove from tow vehicle. Lead is 48" long but would be better if a little longer, maybe 60 or 72" to facilitate connection to tow vehicles with extended hitches or trailers with long tongues. Would be fantastic if the monitor/test lights were included on connector. 606783

- HM38134

Very nice set up 604123

- HM38134

Love the finger loop. Next time I need to replace my trailer light plug this will be my choice. 562226

Excellently. Love the ring!
Kenneth - 09/06/2019


- HM38134

All three of the items on my order appear to be very good for there purpose. 558433

- HM38134

Excellent quality, just what I needed to replace a broken and too short connector. 521829


Ask the Experts about this Hopkins Wiring

  • Recommended Parts and Wiring for Adding LED Lights to Aluminum Cargo Carrier with Ramp
    Thank you for all of the helpful information! I do have a few different options for you to add LED lighting to your scooter carrier that resembles the MaxxTow 27x47 Cargo Carrier # MT70100. You can definitely use the Optronics Streamline LED Trailer Tail Light # STL79RB with wiring like the Hopkins Endurance # HM38134 by just using heat shrink butt connectors # DW05744-5. Since your carrier is aluminum you will need to cut off the eyelet on the ground wire and splice it to the white...
    view full answer...
  • Recommended 4-Way Flat Trailer Connector with Pigtail
    I recommend using one of the Hopkins Easy-Pull 4-Way Flat harnesses. These have a connector with a loop in the middle that makes disconnecting your trailer wiring from your tow vehicle much easier than a standard 4-Way Flat connector. The wiring is also labeled which helps with the installation. This comes in a 12" version as part # HM48114 and a 48" version as part # HM38134. We also have the 12" part # HM48138 which has an integrated LED tester. I recommend using 16 Gauge Butt Connectors...
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  • How to Choose Correct Ball Mount for Towing a Trailer with a 2013 Subaru WRX and EcoHitch
    To choose the correct ball mount/hitch ball combo you simply need to measure the height of the top of the inside of your EcoHitch Invisi Trailer Hitch Receiver # 306-X7279 when it is installed on your 2013 Subaru WRX Sedan as well as from the ground to the bottom of your trailer coupler (while it is level!). You then just need a ball mount with a drop if the receiver is higher or a rise if the trailer coupler is higher. The ball mount kit # 989900 is a great option because it comes with...
    view full answer...
  • Can Tail Lights be Installed on Kuat Sherpa 2.0
    Thank you for the purchase of the Kuat Sherpa 2.0 # SH22B. Since your right turn signal is being obscured you could very possibly use the Thinline LED Trailer Tail Light # STL59RB with a 4-Way pigtail like part # HM38134 but I have a different recommendation for you that I believe is a bit simpler to install and will look better since that strip can only carry one turn signal function. I recommend using the Light Kit # 20174 with 2 of the Bracket # BK70BB. The 4-Way connector is already...
    view full answer...
  • Solution for 4-Way Round Connector on Trailer to 4-Way Flat Connector on 2016 Honda Pilot
    I do have a solution for you but unfortunately there are no adapters for a round 4-Way connector on your trailer to the Curt T-Connector # C56291 on your 2016 Honda Pilot. Instead what you will need to do is swap out the 4-Way round connector on your trailer for a 4-Way flat connector. I recommend cutting the connector off and splicing the Hopkins Endurance Easy-Pull Harness # HM38134 on your trailer wiring so that you get a connector on your trailer that is compatible with your vehicle....
    view full answer...
  • Adapter for a 4-Way Flat to 6-Way Square Trailer Connector
    The only 4-flat to 6-square connector we carry is part # 30104. This sounds like what you're looking for but I'm not sure exactly if this is the same connector on your trailer. If you can send me a picture I can try to verify that. If this doesn't work you can add a 4-way to the trailer instead of using an adapter. You don't have to cut off the existing 6-way but instead splice into the existing wires and connect a 4-way in addition to the 6-way. Part # HM38134 will work.
    view full answer...
  • Matching 4-Way Recommendation to Fit the Hopkins # HM38134
    For the connector that will mate up to the Hopkins # HM38134 that you referenced that has the pull ring and the cover you are interested in you'd want the part # HM48044 for a 48 inch long version.
    view full answer...
  • How To Tow Trailer with Separate Stop/Turn Signals Using a 2018 Mazda CX-5
    In order to tow a trailer using separate brake and turn signal circuits with your 2018 Mazda CX-5 you will first need a standard 4-way trailer wiring harness, the Curt T-Connector Vehicle Wiring Harness part # C56377 which is plug and play. Then, in order to attach the trailer to this connector you will need to install a converter in between the trailer lights and trailer side trailer connector, the Vehicle to Vehicle Tail Light Converter part # 118158 along with a trailer side 4-way, the...
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  • Towing a Trailer with European Connector with a 2018 VW Passat
    The Curt wiring harness # C56388 is a standard 4-way connector that's commonly used in the United States. It powers the running, brake, and turn signals on a trailer. In order to connect your trailer with a European connector you'll need to replace the connector with a standard trailer side 4-way like part # HM38134. You'll need to determine which wires on the trailer are for each function and wire them into the new 4-way. On the 4-way the white wire needs to be grounded to a clean...
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  • License Plate Bracket Needed for 23x47 Carpod Walled Cargo Carrier
    We do have license plate brackets like part # LP10SB that you could use to move your license plate so it sits behind the 23x47 Carpod Walled Cargo Carrier # M2205-2201. If you plan on driving at night time you should make sure to have a bracket with a light like part # PM436B. If you go this route then you will also need a wiring harness like part # HM38134 (you will connect the wire from the light to the brown wire and then cap off the additional wires for this application). Butt connectors...
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  • Connecting Trailer Harness to Trailer Wiring with Different Colors
    It sounds like the new 4-way trailer connector uses standard trailer wire coloring, like part # HM38134: green for right turn and brake, yellow for right turn and brake, brown for running light, and the white wire gets grounded to the trailer frame. That's the easy part. The hard part is finding what the trailer's colors are. Unfortunately, there's no definite way to do this other than getting a 12 volt battery, grounding the ground wire (probably the white) to the battery's negative...
    view full answer...
  • Availability of 7-Way Round to 4-Way Flat Adapter for a Light Plant Trailer
    If you have a 4-Way Flat connector on your light plant then the easiest way to connect it to the 7-Way on your tow vehicle would be with the Hopkins Adapter # 47345. We also have the Hopkins Adapter # 30955 which you could permanently install on your tow vehicle by simply disconnecting the US Car Connector from your current 7-Way and plugging it into the back of this adapter. This would give you both a 4-Way Flat and a 7-Way Blade connector so that you don't have to keep track of an...
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Do you have a question about this Wiring?

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Info for this part was:

Edited by:
Lindsey S
Installed by:
Jeff D
Installed by:
Adam E
Expert Research:
Jameson C
Video Edited:
Dustin K
Video by:
Chris R
Written by:
Alexander C

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