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Hopkins Endurance Easy-Pull 4-Way Flat Connector w/ 48" Harness and LED Tester

Hopkins Endurance Easy-Pull 4-Way Flat Connector w/ 48" Harness and LED Tester

Item # HM48058
Our Price: $10.52
You Save: 54%
Trailer Wiring
Shipping Weight: 0.33 lbs
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Built-in LEDs on this 4-way flat connector help you troubleshoot problems. The large grip ring provides the leverage you need to easily disconnect it from your trailer connector without damaging the terminals. Includes dust cover. Great Prices for the best trailer wiring from Hopkins. Hopkins Endurance Easy-Pull 4-Way Flat Connector w/ 48" Harness and LED Tester part number HM48058 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (10)
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Hopkins Trailer Wiring - HM48058

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

Built-in LEDs on this 4-way flat connector help you troubleshoot problems. The large grip ring provides the leverage you need to easily disconnect it from your trailer connector without damaging the terminals. Includes dust cover.


  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Compatible with 5-pole, 6-pole, and 7-pole adapters (sold separately)
  • Works with 2-wire electrical systems
  • Lets you easily disconnect without damaging terminals or tugging on wires
    • No more wiggling and fighting with plugs works best when used with a trailer-side Easy-Pull
    • Ring is big enough to fit your finger in, even if you're wearing gloves
  • Shows if your connection is good with built-in, red LED lights
    • Fast and easy troubleshooting
    • Labeled for each function on your vehicle
  • Splices into your vehicle's wiring
    • Bonded wires are labeled
    • Wire connectors sold separately
  • Includes durable, molded-rubber, female output socket with protective dust cover
  • Comes with a packet of terminal grease to help prevent corrosion


  • Ring inner diameter: 1"
  • Ring outer diameter: 1-7/8"
  • Harness length: 48"
  • Wire gauge: 14
  • 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. You might even pull on the wires, leading 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 trailer-end 4-way flat plug. Combine the Easy-Pull vehicle-end plug and 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.

Built-In LEDs Light Up to Confirm Power

Easily troubleshoot any trailer wiring problems with this lighted 4-way connector. It has built-in LED lights that help you determine quickly and easily if the trailer connector is receiving power from your tow vehicle. Just plug the connector into the 4-way flat on your trailer. No separate circuit testers are needed.

LED lights help with troubleshooting

Activate each function on your vehicle and a red light will come on if power for that function is being sent by the vehicle-end connector to the trailer-end connector. If the connection is receiving power for all of the functions, but your trailer's lights are still not working, then you know that the problem is on the trailer end and you will need to check your trailer's wiring. Each function, except for ground, is represented by a separate light, and the functions are labeled for easy identification.

4-Way Trailer Connector Installation

Because the color/function of the new connector wires may not match the color/function of your vehicle wires, be sure to use a tester (sold separately) to determine the function of each wire on your vehicle's tail light wiring harness before installing this connector. Once you've determined the matching functions, use quick-splice or butt connectors (sold separately) to connect the corresponding wires.

The number 1 reason trailer wiring comes up faulty is a bad ground, so make sure your ground wire has a solid and clean connection to metal. To make this connection, you'll need a ring terminal and a self-tapping screw (sold separately).

Quick Tip:

We install a lot of wiring harnesses around here, so we thought we'd share a few tips we've picked up over the years.

  • Butt connectors - especially heat-shrink ones - provide the most secure, longest-lasting connection, so we'd recommend you grab a few and swap them out for the quick-splices in this kit.
  • Use a circuit tester on the plug terminals once the harness is installed to make sure everything's working. There's nothing worse than figuring out that you have a bad ground or a faulty connection right before you're about to hit the road.
  • Be sure to put a little bit of dielectric grease on the 4-way plug to protect the terminals from dirt, grime, and corrosion.

48058 Hopkins Vehicle Wiring Harness with Easy Pull Vehicle End 4-Pole Connector and LED Test Lights - 4' Long

Customer Reviews

Hopkins Endurance Easy-Pull 4-Way Flat Connector w/ 48" Harness and LED Tester - HM48058

Average Customer Rating:  5.0 out of 5 stars   (10 Customer Reviews)

Built-in LEDs on this 4-way flat connector help you troubleshoot problems. The large grip ring provides the leverage you need to easily disconnect it from your trailer connector without damaging the terminals. Includes dust cover.


Very strong wire on the connector. Finger hole access is priceless!


Good quality and fast shipment. The hole makes it easy to disconnect without straining the cables.


easy installation, I like the indicator,


This plug style is a great idea. Easy to install, works great.

Hopkins S.


Thanks Steve T for the great review and 5 out of 5 rating!!! We at Hopkins are very proud of the new Easy-Pull Harness.


Arrived quickly, matches vehicle as adv ertised.

Hopkins S.


Jeff, Hopkins appreciates your business and is grateful you purchased our Easy-Pull™ Connector. The Endurance™ Professional Grade Easy-Pull™ is an innovative product that comes with a 3 year Warranty. If you have any concerns or questions, please get in contact with etrailer customer service.


Outstanding quality and speed of delive ry






See what our Experts say about this Hopkins Trailer Wiring

  • Availability of Easy Pull Hopkins 4-Way with LED Tester 48 inches Long
    I found what you are looking for. The Hopkins Easy-Pull Endurance 4-way part # HM48058 is exactly what you are looking for. It's 48 inches long, has the Easy-Pull style of 4-way handle, and has the LED testers built into the connector.
    view full answer...
  • What Gauge Wires Are Used On the Hopkins Endurance Easy-Pull Harness HM38136
    I spoke with Hopkins and they told me the Hopkins Endurance Easy-Pull Harness part # HM38136 has a 16 gauge wire for the ground and then 18 gauge for the stop/turn and running light. The correct matching side for the vehicle is the Hopkins Endurance Easy-Pull Harness part # HM48058.
    view full answer...
  • How To Tow a Trailer With 4-Pole Flat Using a Motorcycle With 5-Pole Round
    In order to attach your motorcycle with 5-pin round to a trailer with 4-pin flat you will need to make your own adapter using the Pollak 5-Pole, Round Pin Trailer Wiring Socket part # PK11502, the Hopkins Endurance Easy-Pull Harness part # HM48058, and the Roadmaster Brite-Lite Wiring Converter part # RM-732. They do not make a plug and play adapter for this but it will be easy to do using the above. The motorcycle has separate brake and turn signals which is why you need the converter...
    view full answer...
  • How To Identify Functions Of Trailer Wiring With White, Yellow, Green and Red Wires
    The most logical explanation is the shop that built the trailer used a red wire in place of the brown but as not all shops have to abide by a particular set of wire colors on trailers it is best to ensure what the wires run to. You can determine the wiring functions by either tracing the wiring or using a battery to jump the wiring and verify its functions. Typically on 4-way wiring the white is the ground which will run to every light or it will connect to a ground on the trailer. The...
    view full answer...
  • 7-Pin Agricultural Vehicle Connector To 4-Pin Flat Trailer Connector
    Due to your 7-pin connector not having combined tail lights and brake lights you will need to create an adapter using the following parts. The Pollak Heavy-Duty, 7-Pole # PK11700 will connect to your 2012 John Deere 5045d tractor. You will wire the Hopkins Tail Light Converter # HM48847 to this. The 5 wires from the converter will attach to the 7-pin connector as seen in the image below. Then you will be able to attach the Hopkins Endurance Easy-Pull Harness # HM48058 to the 4 wires on...
    view full answer...
    Image 1 for
  • Troubleshooting Trailer Lights Staying on Constantly
    There are a couple of reasons why your trailer lights may be staying on constantly, starting with a corroded connector. What corrosion does is cause a short which can lead to the lights staying on, and when you unplug the connectors they would, of course, turn off. So start by checking there, and if you can't clean the corrosion, you can replace the connectors on either the side of your Transit or trailer. I'm not sure if you have a 4-way or 7-way but if you have the factory tow package...
    view full answer...

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 Cole B
Installed by:
Cole B
Employee Alexander C
Written by:
Alexander C
Employee Sabrina W
Updated by:
Sabrina W

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