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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
2011 Ram 2500
Hopkins

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

$21.53
Retail:$27.39
You Save: 21%
Custom Fit Vehicle Wiring
Not Confirmed to Fit

2011 Ram 2500

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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 - no cutting or splicing required. 1-800-940-8924 to order Hopkins custom fit vehicle wiring part number 40205 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.
  • All Info
  • Reviews (12)
  • Q & A (0)
  • Videos (1)
  • Photos

Hopkins Custom Fit Vehicle Wiring

  • 4 Flat
  • No Tow Package
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • Plug-In
  • Hopkins
  • Plug and Lead
  • No Converter
  • Visible

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting or splicing required.


Features:

  • 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)
  • Connects quickly and easily - no cutting or splicing of wires
    • Locate connection point behind rear bumper
    • Plug in connector
  • Protective connection terminals resist corrosion
  • Comes with dust cap for 4-way flat connector, cable ties, and terminal grease packet for electrical connections
  • 90-Day limited warranty


Installation

This custom-fit T-connector plugs into your vehicle's wiring harness, which is located behind the rear bumper.


Once installation is complete, the 4-way flat connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.


It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.



40205 Plug-in Simple Hopkins T-Connector with 4-Pole Trailer Connector

Replaces 30205

Item # 40205

Installation Details 40205 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


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

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




Video Transcript for Review of Hopkins Custom Fit Vehicle Wiring - Plug In Simple Vehicle Wiring 4 Pole Flat - 40205

Hi, everybody, Andy here with etrailer.com. Let's take a real quick look at this Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Now, this harness is designed to fit easily onto your 1986 to 1992 Ford Ranger, and on custom-fit parts such as this harness, I do recommend taking advantage of our Vehicle Fit Guide here at etrailer.com. Simply input the year, make, and model of your vehicle and our Fit Guide will confirm if this harness will work for you or if we have something comparable that will work for you. Now, this harness is going to give you that 4-pole flat trailer connector at the back of your Ranger to power your trailer signal lights. This is also gonna be compatible with five, six, and 7-pole adapters, and those adapters are sold separately.

Included is this detachable dust cap that's going to cover up that 4-pole flat connector when it's not in use. It's gonna protect those connection points, keeping it free of dirt and debris and moisture and things like that. This custom-fit T-connector is going to plug into your truck's wiring harness, which is located behind the rear bumper, so it's gonna be a very easy installation, and then once the installation is complete, the 4-way flat connector will be stowed beneath your truck near the trailer hitch. If you don't already have one, we do provide mounting bracket options for you that you can check out to keep that mounted securely by the opening of your trailer hitch receiver. Now, it is recommended that you use a small amount of grease on all of your electrical connections, such as the 4-way connector itself and the plugs here.

This does come with a small packet of grease, but I do also recommend taking a look at the dielectric grease that I'm putting there on your screen. That's a larger tube of grease and so that's gonna be available to you for multiple applications besides this little packet that's included. So, if you're interested in taking a look at that larger tube of grease, you can take that part number that you see there on your screen, pop it into the search field of our website. That will take you to that grease and you could add that to your order if you so desire. This does come with a few cable ties, but I think it's gonna wrap up our really quick look today.

I do hope that it was helpful for you. Again, my name is Andy, thank you for joining me.

Customer Satisfaction Score:

Ratings & Reviews

4.8

12 reviews
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting or splicing required.

by:
1992 Ford Ranger

It is a perfect fit, exactly what I needed for plug-in play on my 1992 Ford Ranger! Can’t wait to haul my trailer and be able to have lights working on it!



by:
Ford Ranger

Well made, however the connectors were not an exam act match for my 1992 Ranger. I had to trim off a couple of the indexing tabs on the female sides of the harness and the connector on my truck in order to be able to plug it in. Once that was done, it connected right up and functioned correctly.

Only complaint is that the retainer for the plug cap fits very loosely. Would be nice if it was permanently attached to the plug.



by:

Rafe profile picture

Rafe

3/24/2025

Installed a year ago, not a single issue

Andrew N. profile picture
Etrailer Expert

Andrew N.

3/24/2025

@Rafe That's what we like to hear :)


by:

Lori profile picture

Lori

5/13/2024

Great



by:
1989 Ford Ranger

Direct fit for my model truck. Great qu ality.



by:

good product thanks to the person who placed the order



by:

Awesome delivery time totally awesome thank you



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by:
1989 Ford Ranger


12
12

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

  • Differences in Curt and Hopkins Wiring Harnesses with 4-Pole Flat Trailer Connector for 1988 Ranger
    Both 4-pole wiring harnesses available for your 1988 Ford Ranger, Curt # C55314, and Hopkins # 40205, are custom-fit types that plug in to connectors on the vehicle and both are passive, meaning that they do not require a 12V power feed directly from the vehicle's battery. So the power for the trailer lights will be drawn through the truck's own wiring. As far as differences, besides the way the connectors are attached to the harness there really is no difference. I personally recommend...
    view full answer...

Info for this part was:

Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C
Employee Andy C
Installed by:
Andy C

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