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  1. Custom Fit Vehicle Wiring
  2. Hopkins
  3. 4 Flat
  4. No Tow Package
  5. Trailer Hitch Wiring
  6. Vehicle End Connector
THIS ITEM IS NOT A FIT FOR
2004 Ford Explorer
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Hopkins

Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Part Number: HM11142104
In Stock
$78.36
Retail:$107.19
You Save: 27%
Custom Fit Vehicle Wiring
Not Confirmed to Fit

2004 Ford Explorer

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Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring. Powered converter reduces strain on wiring system. 1-800-940-8924 to order Hopkins custom fit vehicle wiring part number HM11142104 or order online at etrailer.com. Free expert support on all Hopkins products. Great prices and Fastest Shipping for Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (2)
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  • Videos (1)
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Hopkins Custom Fit Vehicle Wiring - HM11142104

Highlights

  • Custom Fit for Your Vehicle: Works with your vehicle's wiring
  • Tow Without Factory Prep: 4-way flat connector powers trailer signal and running lights.
  • Plug-and-Play Install: Harness plugs into existing vehicle ports—no cutting or splicing needed.
  • Protects Vehicle Circuits: Built-in powered converter isolates and safeguards factory wiring.
  • Clean Hidden Fit: Low-profile design routes behind trim for a discreet, factory-style finish.
  • Ready for Light-Duty Towing: Ideal for small trailers, boats, or utility haulers using 4-pole wiring.

Features to know about

Installs Without Splicing: Plug-In Simple Design

Wiring a trailer doesn’t have to mean cutting into factory wires. This Hopkins Plug-In Simple Vehicle Wiring Harness connects directly to existing plugs for a clean install. The plug-and-play setup means no splicing or wire tracing—just connect it, and you’re ready to power up your trailer lights.

Works Even Without a Factory Tow Package: Built-In Powered Converter

If your vehicle didn’t come with a tow package, this harness has you covered. The built-in powered converter handles the load for the trailer lighting system, making it safe to run without overloading the vehicle’s circuits. It delivers a steady signal for reliable running, brake, and turn lights.

Clean Look and Reliable Protection: Hidden Mount with 4-Flat Connector

This harness keeps things tidy by using a hidden mount design that routes wiring where it’s protected and out of sight. The 4-flat connector provides a secure, weather-resistant link to your trailer lights, helping prevent corrosion and keeping everything sealed tight.

Ready for Everyday Towing: Vehicle-End Trailer Hitch Wiring

No need for extra adapters or custom wiring jobs. This harness is set up as a vehicle-end connector that works with standard 4-pole flat trailer plugs. Once it’s in place, you’ve got dependable trailer lighting whenever you hitch up—simple, solid, and ready to use.

Specs

Electrical and Connector Specifications

  • Connector type: 4-Pole Flat Trailer Connector
  • Type: Plug-In Simple Vehicle Wiring Harness
  • Converter: Powered Converter
  • Vehicle compatibility: No Tow Package
  • Mounting style: Hidden
  • Connection method: Plug and Lead
  • Application: Trailer Hitch Wiring – Vehicle End Connector

11142104 Plug-in Simple Hopkins T-Connector with 4-Pole Trailer Connector



This Product Fits The Following Vehicles




Video of Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Hopkins Custom Fit Vehicle Wiring - Trailer Hitch Wiring - HM11142104 Review

Speaker 1: Today we're going to take a look at the Hopkins Plug-in Simple Vehicle Wiring Harness with the 4-way flat trailer connector. Now this is a custom fit part. It is designed to fit the 2013 to 2016 Dodge Dart, and on a custom fit part I would like to recommend for you to go to our website, use our fit guide, put in your year and model vehicle, and it'll show you if this will work for your application.This harness will provide this 4-way flat trailer connector at the back of your vehicle to power your trailer signal lights. It is compatible with 5-pole, 6-pole and 7-pole adapters that we do sell separately on our website. This whole unit does connect very quickly and easily. Basically, you just locate your connection points, which are in the rear cargo area behind the tail lights.

Plug in these connectors, one on each side, one on the drivers side, one on the passenger side. Ground your white wire, and then run your red power wire to your vehicle's battery.It does include this tail light converter, this flat box right here, and this is to ensure that your vehicle's wiring will match that of your trailer, and it is a powered module. That's why you'll connect it directly to your vehicle's battery, and that's to avoid overloading your vehicle's electrical system. They do use protective connection terminals to help resist corrosion.If you notice, it does come with this nice dust cap, or dust cover, for your 4-way, so what you can do is just attach that to the plug, and you can leave it attached on there, if you'd like. But when you're not plugged into your trailer, you just put that over the terminals, and it protects them from any damage, or from the elements.A few specs on this.

The maximum amperage for the stop and turn lights circuits is 3 amps per circuit. For the tail light it's 6 amps per circuit. Now this part does come with everything shown here, included in your parts here, to install it, and it even comes with a nice set of detailed instructions that'll describe how to install everything. But just basically what you want to do is, again, you'll go to the rear cargo area and gain access to behind the tail lights, and you want to start on the drivers side, and you'll take this T-connector here. It has a yellow wire in it.

Unplug the harness from your tail light to plug this into the tail lights into the harness.And then do the same on the passenger side. You'll take this other connectors here with the green wire. That's for the passenger side. Run this length of wire over there. Plug that in behind the tail lights.

Now what you want to do is this converter here, you do want to attach that to a surface so it doesn't bounce around, so they do include some cable ties to attach that down. And then you'll have these two wires remaining. The white wire has an eyelet on it. You want to connect that to a good clean ground. There's one nearby. If not, they do include a grounding screw so that you can make your ground. And then the red wire with the butt connector on it, this is what'll run to the vehicle's battery, so they do give you this extra length of wire to do that. So you'll connect one end to one end of the length of wire. Run this all the way to the front.Now you don't want to connect this directly to the battery. You want to run it through this inline fuse holder first. So you take that, attach that to one end, and then the other end, it has the eyelet on it. That's what'll connect to the battery. Once that's all connected, pop open your fuse holder, take your included 15 amp fuse, install it just like that, put your cap back on it, and now your system will be all ready to go.If you notice they do include a nice packet of terminal grease, or Dielectric grease, and then you want to put that on all your electrical connections to help prevent any corrosion. But that should do it for the review on the Hopkins Plug-in Simple Vehicle Wiring Harness with the 4-way flat trailer connector.

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2014 Dodge Dart
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See what our Experts say about this Hopkins Custom Fit Vehicle Wiring


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Wilson B
Updated by:
Wilson B
Employee Michael B
Updated by:
Michael B
Employee Alexander C
Written by:
Alexander C

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