bing tracking image
  1. Trailer Wiring
  2. Hopkins
  3. Trailer Connectors
  4. Trailer End Connector
  5. 4 Flat
  6. Plug and Lead
Hopkins Endurance 4-Way Flat Trailer Connector - Trailer End - Ergonomic Design
Hopkins

Hopkins Endurance 4-Way Flat Trailer Connector - Trailer End - Ergonomic Design

Part Number: HM48110
$7.83
Retail:$15.75
You Save: 50%
Trailer Wiring
Add to cart
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

Videos

Need help with installation?
Locate installers near me
Heavy-duty 4-pole flat trailer connector features an oversize grip to make connecting quick and easy. Built-in cover helps keep terminals corrosion-free. Great Prices for the best trailer wiring from Hopkins. Hopkins Endurance 4-Way Flat Trailer Connector - Trailer End - Ergonomic Design part number HM48110 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (114)
  • Q & A (0)
  • Photos

Hopkins Trailer Wiring - HM48110

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

Heavy-duty 4-pole flat trailer connector features an oversize grip to make connecting quick and easy. Built-in cover helps keep terminals corrosion-free.


Features:

  • 4-Way flat connector (trailer side)
  • Easy-pull, oversize grip makes connecting/disconnecting quick and easy
  • Heavy-duty housing with dust cover protects the terminals
    • Housing also has mounting holes
  • Terminal grease packet included
  • Works with all 4-way flat connectors


Specs:

  • Wires: 12" Long
  • Pigtail leads
  • Wire Configuration:
    • Yellow - left turn and brake
    • Green - right turn and brake
    • Brown - tail
    • White - ground
  • Wire gauges:
    • Ground wire: 16 gauge
    • Turn, tail, and brake light wires: 18 gauge
  • 3-Year limited warranty


A heavy-duty mounting bracket holds the 4-wire flat plug for a secure connection. The terminals are made of corrosion-resistant materials to withstand exposure to the elements.



48110 4-Wire Flat - Trailer Side




California residents: click here



Customer Reviews

Hopkins Endurance 4-Way Flat Trailer Connector - Trailer End - Ergonomic Design - HM48110

Average Customer Rating:  4.8 out of 5 stars   (114 Customer Reviews)

Heavy-duty 4-pole flat trailer connector features an oversize grip to make connecting quick and easy. Built-in cover helps keep terminals corrosion-free.

by:

I rewired my light bar for my boat trailer with the items I purchased. Before I built the the light bar, every time I used my boat trailer I would waste valuable sailing or fishing time repairing faulty lights. The do not last long when you submerge them in salt water. This light bar now version 3.0 have given little trouble over the years



by:

Great product.
Works well when I had
a broken connection on my 4 way plug end on my light-up hitch cover I bought from y'all a while back.
Always a happy customer.
Thanks, George.



by:

Plug came in today, light did not. I ordered from here because it said both would be here Friday. Called company. Was told I could return light but would have to pay fee, because promised arrival date was a guesstimate.



by:

This product will be an additional backup item. I used the other Easy Pull connector, but on my truck end the flapper door is spring loaded and puts too much downward pressure on trailer connector. Maybe that's why original trailer connector had a broken pin.

Ed L.

7/6/2018

Thank you, and everything still working great. I still browse your site checking out items.



by:

item came as expected and is exactly what i needed -a trailer connector that will resist fraying at the point where the wires meet the connector ,nice and strong at that point, will last years instead of months.

K.nelson

2/22/2017

its still the best ever ...will replace old wiring that has frayed or prevent such from occurring



by:

This is a nicely designed product. My only disappointment was that the wires could have been longer, perhaps 12 or 18 inches longer so it extends to the trailer harness better and is more visually appealing.



by:

I actually got the idea from a trailer I rented once. You permanently mount this somewhere behind the coupler where it won’t get damaged and use an extension. It’s a lot faster and easier to replace a damaged extension wire than to solder a new plug onto your trailer wiring if(when) it gets damaged. I used mine on a 4x8’ utility trailer that I pull with my truck on the road and with a utility tractor off road, you don’t have to worry about the wiring for the lights hanging down dragging the ground getting damaged, you just remove the extension and put the weather cover on it when you’re off highway and don’t need the lights.



by:

Shawn B. (& everyone I talked with at E Trailer) was wonderful.
Great phone support. Great products. We did a great job installing the wiring harness.
Made me wonder why we originally took it to a "professional" trailer sales & service place in Ogden UT. They hacked into our wiring & created problems.
I will continue to be a grateful customer.
Finding good people who know their stuff in todays world is a soul healing event.
Thank you E Trailer!



by:

Comes with documentation about wiring and a grease packet to put on the contacts to prevent corrosion. Wires are black with a colored stripe for identification per the documentation in the package.

Wayne M.

2/7/2015

Good sealed connector. Having the functions marked on each wire is great...no worry about color coding differences between different vintagesmodels of trailers or vehicles.



by:

Ordered two Enhanced Trailer Connector.
They
arrived on time, and met all my expectations
Thanks

Al E.

7/8/2014

Work on the advertised



by:

quality item, much better than the plug that came on my trailers wiring harness, hence the need to replace it. Soldered the new to the harness and covered with heat shrink. Fast service and better quality than offered at the big box stores. well worth paying the shipping charges.



by:

This was the perfect replacement for the old connector on my boat trailer with 18-guage wiring and 16-guage ground. Replacement was very easy. I just cut off the old connector and splice this one in its place using heat shrink butt end connectors. Fits very snuggly into my vehicle side connector, unlike the old connector I replaced.



by:

Great connector. Easy to use, environmental cap will be great to prevent pins corroding. Make sure you buy splices because product does not come with them. All in all, a great and easy product to use and install.

Etrailer Expert

Patrick B.

7/31/2013

Adding dielectric grease to the connectors can be a big help at prevent corrosion on those contacts.



by:

Sturdy plug, I like that it has a cover. Doesn't come with connectors like some of the others do, so be sure to order those, too. I used 3M snap, butt connectors would've been less bulky for the location. Shipped quickly, as always. Love Etrailer!



by:

With the help of an internet video, I joined this and a seven-pin female to create an adapter to connect my newly-purchased car to my travel trailer. It allowed me to get the trailer home pending a more permanent wiring change for the car. I was very pleased.



by:

Purchased this wire harness and the plastic cover has stayed intact protecting wires from weather. After 1 year it's still workin great.



by:

This is the one to buy. We hook-up and unhook our trailers on a daily basis. The wiring takes a beating. This product is fantastic. It has been reinforced around the housing and the base of the wires. The rubber on the side are excellent. They will have to keep our drivers from tearing the wires from the housing.



by:

High quality product available at half the price or more than other merchandise providers. eTrailer's ordering process, shipping, timely delivery , and customer services were on target.



by:

So far the product has worked great. with that said it has only been on the trailer for a week so only time will tell :) it looks and feels to be built with great strength. I don't foresee any issue with it but as I said only time will tell. Transaction process was smooth and shipment from retailer was fast! Look forward to doing all future trailer business with etrailer.com again.



by:

I bought this for my utility trailer, the weather proof cover for the plug is a nice touch and should help keep the pins from rusting.



by:

Good product. Clearly marked wire pigtail (in multiple languages), perfect fit to OEM 4-pin harness and a nice braided sleeve.



by:

In stalled this connector on my tow dolly. Easy to install and is working as it should



by:

A common problem with flat connectors is the ability to get a grip on them as you try to engage or disengage them. The ears on this one allow for a much better grip.



by:

Excellent product and well thought out. It even comes with a small, but adequate, bit of dielectric grease- nice touch!



by:

Received the 4 wire flat pigtail after a couple days and wired it to the other component and it all worked great. Would definitely recommend this to others. I had to replace an old damaged part with this exact match.


25
114
Show More Reviews

See what our Experts say about this Hopkins Trailer Wiring

  • How to Make Coiled 6-Way to 4-Way Adapter
    I personally don't like using adapters if I don't have to so what I would do is use the part # RM-1064-B for the coiled section, the part # HM48440 for the 6-way section and then for the 4-way use the # HM48030 wired up correctly and you'd have a coiled 6-way to 4-way adapter without using any adapters that would work very well.
    view full answer...
    Image 1 for
  • Wiring a 2024 Toyota Sienna To Pull a Airplane Trailer With European Trailer Wiring
    I have a solution for you as while you don't need the converter with the ZCI Circuit Protected Vehicle Wiring Harness # 119250KIT to combine your wiring you do still need a powered converter to prevent placing to much draw on the factory wiring harness. You can simply wire in the 2 to 3 Wire Tail Light Converter # C56196 between the 4-way and the European trailer connector on your airplane trailer. The Pigtail # HM48110 can be used so you can simply unplug the converter adapter and tow...
    view full answer...
  • Solution for Towing Camper with Square 6-Way Connector
    The square trailer connectors are super unique. There are only a couple manufacturers who made them a while back and they were all different so what we recommend people do in your situation is cut off the 6-way and wire a 4-way in place of with the # HM48110 and you'd have the simplest solution. To determine the function of each wire on your trailer you could trace the wiring or use a jumper wire from a battery to put voltage on each wire. The functions are labelled on the # HM48110.
    view full answer...
  • Adding a 4-Way Trailer Wiring Harness to a 2007 Chevy Monte Carlo LT
    To add a trailer connector to the back of your 2007 Chevy Monte Carlo LT you will need to hardwire in a harness using # 18252. This harness comes with a circuit tester which you will use to determine the functions of the vehicle tail light wiring to install the 4-Way. On the 4-Way, the white wire is ground and will attach to a clean bare metal surface. The yellow wire will connect to the vehicle's left turn and brake light wire. Brown will connect to the vehicle's running light/tail light...
    view full answer...
  • Recommended 4-Way Connector for 6-Wire Trailer Wiring
    It sounds like you have something similar to a wishbone wiring harness with 2 running light circuits and then also 2 ground circuits. To replace this, I recommend the Hopkins Endurance Quick-Fix Replacement 4-Way Flat Trailer Connector w LED Test Lights # HM48192 where you will simply match the current wires to the correct terminal for function. If you want to splice them together prior to the connection, I recommend the Hopkins Endurance 4-Way Flat Trailer Connector - Trailer End - Ergonomic...
    view full answer...
  • Can 4-Way Trailer Wiring Plugs Connect to Battery for Interior Light
    Yes it would be possible to wire a 4-way to a 12 volt battery if you wanted to. You'd need a 4-way like the part # HM48030 and the part # HM48110 to run one of them to your battery and the other to your light. Otherwise you could run the vehicle side 4-way to the battery.
    view full answer...
  • How Can I Use my 6-way Round Trailer Connector with my 4-way Connector on my Vehicle
    In your situation I recommend using the Hopkins Endurance 4-Way Flat Trailer Connector part # HM48110. This will replace the 6 round connector on your trailer and allow you to plug it directly into your vehicle. There are no 4-way flat to 6-way round adapters that I know of available.
    view full answer...
  • Parts Needed to Create 7-Way Male to 4-way Trailer Side Adapter
    Sounds like you need a 7-way male to 4-way trailer side adapter which you'd have to make since that configuration isn't commonly needed. The part # PK12716 is the opposite configuration and does not open up to redo it. You'd need the part # A7WCB and then wire the 4-way part number # HM48110 to it.
    view full answer...
  • 4-Way Recommendation Where all 4 Wires are 16 Gauge
    I spoke with my contact at Hopkins and they informed me that the Hopkins Endurance 4-Way Flat Trailer Connector # HM48110 that you referenced has 16 gauge for the white (ground) wire and 18 gauge for the rest. For a 4-way that has all 16 gauge wire you would want the Wesbar 4-Pole Flat Connector # W787264.
    view full answer...
  • Replacement Trailer Lights for 1999 Ranger Trailer
    Since trailer makers don't usually keep specs on the lighting parts used on their trailers the easiest way to identify replacements is to note a few things about your lights, like size, shape and color, and to use the linked page that shows you all trailer lights we offer that have white/clear lenses. Simply click on the filters on the light page to narrow the results to the items that match your lights. For example, if you click on 'round' and 'surface-mount' you'll see lights like the...
    view full answer...
  • Adapter Solution to Tow Trailer with 5-Way Round with Tow Vehicle with 4-Way
    The trailer you have has the turn signals separated from the stoplights which is different from the trailer wiring of your HHR which has those two circuits combined. So what that means is you need to start with a turn signal converter like part # 118158 which will perform that function. So what I would do at this point is remove the 5-way round of your trailer and install a 4-way like pat # HM48110 with the converter on the trailer side so that you have the ability to easily connect tow...
    view full answer...
  • Wiring Adapter For Towing a Motorcycle Trailer 6-Way Square Connector With A Flat 4-Way Tow Vehicle
    You will want to use a 6-Pole Square Trailer Wiring Connector Kit # 37995, a Hopkins Endurance 4-Way Flat Trailer Connector # HM48110 and a Curt 2 to 3 Wire Tail Light Converter # C56196 to create a custom wiring adapter. First you will want to use a Test Light # PTW2993 to test your wiring of the 05 Bunkhouse Motorcycle Camper. This will help you to determine which wires will connect to what on your 4-way connector or the converter. You will need a Curt 2 to 3 Wire Tail Light Converter...
    view full answer...
  • What Parts Needed to Connect Trailer with Round 5 Pin Male Connector to a Vehicle with a Flat 4 Pole
    If your trailer has stop and turn functions on separate lights (separate amber lights for the turns) you will need a vehicle-to-vehicle taillight converter harness for your Subaru that can separate the stop and turn functions. These functions are combined on a 4-pole flat connector. If this is the case you will need to fabricate your own custom harness from several components we can supply. First you will need a trailer-side 4-pole flat connector to mate with the Subaru 4-pole. You can...
    view full answer...
    Image 1 for
  • How to Tow a Trailer Designed for a Harley Streetbike with a Vehicle with a 4-Way
    We have what you would need to make the adapter you would need, but we don't sell one ready to go. What you will first need is the # PK12720 for your trailer to plug into, next you will need a signal converter to take the combined signal of your Jeep's 4-way to the separate signal of your trailer. For that you would want the # C56196. Lastly, you would need # HM48110 for a 4-way to plug into the Jeep 4-way. When connecting the converter to the 4-way the wires will match up color for color,...
    view full answer...
    Image 1 for
  • Recommended Alternative to Curt Auxiliary LED Indicators 53201
    I may have a solution for you, but we don't have anything that's going to be an exact match. With that said, you might be able to use the Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 9 Diodes - Clear Lens # STL59RCB which will give you a bright LED light that has stop, tail and turn signal functions. This doesn't have a trailer plug that can be used to power it but you could wire 2 of these lights to the Hopkins Endurance 4-Way Flat Trailer Connector - Trailer End...
    view full answer...
  • Parts Need To Connect Hopkins 7-Way/4-Way Connector HM40920 To Vehicle 4-Way Harness
    To connect your 4-way flat connector on your vehicle to the Hopkins Endurance Multi-Tow Twist-Mount 7-Way RV and 4-Way Flat Trailer Connector # HM40920 you will need to connect a Tow Ready Replacement 7-Way Harness and Socket # 20147 to a Hopkins Endurance 4-Way Flat Trailer Connector # HM48110. We do offer a Wiring Kit # 5506 that will allow you to run wiring for the charge line and a Trailer Brake Controller # 90195 if your trailer has electric brakes or a charge line.
    view full answer...
  • Making License Plate Light Kit Adapter for Spare Tire Carrier
    To make a license plate light that you could add to your spare carrier you could use the part # LPL55CB to provide the light and plate bracket and then for wiring use run a # HM48110 to it so that you could plug in when needed. Basically you'd run the brown wire of the 4-way to the black of the light and then the white to white and you'd be set.
    view full answer...
  • Recommended Converter To Convert Combined Wiring On Vehicle For Trailer With Separate Wiring
    We do have a converter that will let you convert the combined brake and turn signals from your Honda without splicing into the vehicle wiring. The wiring would be done on your trailer. I recommend part # 118158. You would cut the harness on your trailer and wire it to the 118158 converter as shown in the attached photo. Since it is not waterproof, you will need to use a junction box on the trailer like part # 38656. You would need to use a 4-way trailer-side connector like part # HM48110...
    view full answer...
    Image 1 for Image 2 for
  • Replacement 4 Way Trailer Wiring for 6 Wire Wishbone Harness
    I have a solution for you, but you won't want to use a 5 flat connector since the additional wire there is used for the reverse light circuit-which is not present on a 4 way flat. It looks like you've got a wishbone wiring harness with 2 running light circuits and also 2 ground circuits. To replace this, I recommend using the Hopkins Endurance Quick-Fix Replacement 4-Way Flat Trailer Connector w LED Test Lights # HM48192. To install this you will simply match the current wires to the correct...
    view full answer...
    Image 1 for
  • Parts Needed to Connect European 7-Pin to U.S. 4-Way Flat
    There are a few parts you will need, and this will require you cutting off your European 7-pin. First, you'll need a U.S. 4-way, the Hopkins Endurance 4-Way Flat Trailer Connector # HM48110, along with Converter # 118158. If you take a look at the accompanying diagram, you can see exactly how to wire the converter to the 4-way and you will need to do this with Butt Connectors - 22-18 Gauge # DW05743-5 and 16-14 Gauge # DW05744-5.
    view full answer...
    Image 1 for
  • Installing Vehicle to Vehicle Tail Light Converter # 118158 on Trailer w/Separate Brake/Turn Lights
    What the vehicle to vehicle (or vehicle to trailer in this case) does is to take the combined turn and brake signals on a vehicle trailer connector and separates them out so the turn signals and brake lights are separate. When using this converter on a trailer like you want to, you would not have to use diodes. I have included a picture that shows how it would wire up. Essentially you would mount this converter on the trailer. The trailer would need a regular 4-Way flat connector like...
    view full answer...
    Image 1 for
  • Correct Vehicle and Trailer Side Hopkins Endurance 4-Way Flat Trailer Connector
    The Hopkins Endurance 4-Way Flat Trailer Connector part # HM48110 is a trailer side connector which is designed to be installed on the towable. If you're instead looking for the vehicle side which is designed to be installed on the tow vehicle then you will need the Hopkins Endurance 4-Way Flat Trailer Connector part # HM48030. These harnesses both require splicing whether you are just replacing a trailer connector or wiring one for the first time.
    view full answer...
  • Replacement 4-Way Flat Trailer End Connector for Current Connector with 5 Wires
    I recommend replacing your current connector with the Hopkins Endurance 4-Way Flat Trailer Connector, # HM48110. You will just need to cut off the connector on your wishbone style wiring harness and replace it with the # HM48110. A wishbone style harness contains 5 wires because it uses two tail light wires from the connector for each side of the trailer. In this case you will just need to connect the brown wire to both taillight wires, the yellow wire to the left turn/brake wire, the...
    view full answer...
  • Vehicle 4-way Flat Connector to Trailer 7-way Connector Adapter
    The adapter we offer for a vehicle with a 4-way flat to tow a trailer with a 7-way blade is a connector like # 30717. Using a connector like this will not provide use of the trailer brakes, 12V power source, or reverse lights. The 4-way connector only provides tail lights, brake lights, and left and right turn signals. The only way to gain use of these functions is to fully install the 7-way. With the # 30717 connector, the white wire will need to be grounded to provide function to the...
    view full answer...


< Previous
123. . .6



Do you have a question about this Trailer Wiring?


Info for this part was:

Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Adam R
Expert Research:
Adam R
Employee Lori W
Expert Research:
Lori W
Employee Cole B
Installed by:
Cole B
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


Product Experts Available Now!
Call 1-800-940-8924