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  1. Custom Fit Vehicle Wiring
  2. Hopkins
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 4 Flat
  6. No Converter
Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

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

Item # HM40125
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Custom Fit Vehicle Wiring

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Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector Custom Fit HM40125
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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. Call 800-298-1624 to order Hopkins custom fit vehicle wiring part number HM40125 or order online at etrailer.com. Free expert support on all Hopkins products. Guaranteed Lowest Price 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 (7)
  • Q & A (0)
  • Videos (1)
  • Photos
  • Why etrailer?

Hopkins Custom Fit Vehicle Wiring - HM40125

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • No Converter
  • Hopkins

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
    • Locate connection point behind rear bumper or near side frame
    • 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 or inside the driver's-side frame channel.


Once installation is complete, the 4-way 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.



40125 Plug-in Simple Hopkins T-Connector with 4-Pole Trailer Connector

Installation Details HM40125 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 Hopkins Custom Fit Vehicle Wiring - Trailer Hitch Wiring - HM40125 Review

Today we're going to be taking a look at the Hopkins Plug-In Simple Vehicle Wiring Harness with the 4-pole flat trailer connector. This product fits certain years of the Ford F150, 250, and 350. To see if this is a fit for your vehicle, you can use the vehicle fit guide located at etrailer.com. This unit's going to provide a 4-way flat connector at the back of your vehicle to power your trailer's signal lights. It is compatible with 5-pole, 6-pole, and 7-pole adapters. Adapters are sold separately.

It's going to come with a dust cap for the 4-way flat connector. That way you can cover up those connection points when your plug's not being used. It also features protective connection terminals to resist corrosion and last a long time. This is going to connect quickly and easily. You do not have to worry about cutting or splicing any wires. Just locate the connection point behind the rear bumper.

Then you will need to plug in this connector right here. It's got a connector on each side. This is going to match perfectly with the ports on the vehicle. It's going to push together and snap lock together for a nice, tight, secure fit. Once your installation's complete, the 4-way connector's going to be stowed beneath the vehicle near the trailer hitch.

You can loop it around a safety chain loop, or you can purchase a mounting bracket. A mounting bracket is recommended. It is sold separately. That's going to help keep the connector secure and easily accessible. If you're in need of one, you can find them right here at etrailer.com. It's also recommended that you use a small amount of grease on all your electrical connections, like the plugs on the vehicle and the 4-pole connector itself.

The grease is included. Then if you have any excess or slack in the wiring, you can use the cable ties provided with the kit to secure those out of the way. That's going to do it for today's look at the Hopkins Plug-In Simple Vehicle Wiring Harness with the 4-pole flat trailer connector.


Customer Reviews

Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - HM40125

Average Customer Rating:  4.9 out of 5 stars   (7 Customer 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.

- HM40125
by:
1988 Ford F-150, F-250, F-350

It was fast and very easy to do but I have only 5 pins used and it comes with 6. It is for a different truck I think. Tested it and it seems to work fine but no trailer yet. The ground did not seem to work but if I use the truck I would get the test light to work. As I can tell it works fine and is very easy to use, just wish I knew about it sooner. Will try to update when I use it.


Comments
Works just fine will use they again
Keith - 10/21/2018



- HM40125
by:
1994 Ford F-150

The product installed easily. The light connection functioned correctly. I viewed a video online of how to release the Ford harness connector that made the process simple



- HM40125
by:

easy to find the exact OEM fit for most anything towing/trailer related, another great part


Comments
I have lost track of all of the items I have purchased from etrailer over the past few years, but I do know that everything I have received has arrived generally pretty quick and everything has been great quality. I just recently bought another brake controller for another pickup I just bought, chose the same one because my other one is still working well and I think the price was even still pretty close to what it was a year ago. Thanks for the great products, fast shipping, and good prices, etrailer is my go to for towing, trailers, and truck needs to tow.
Bill - 08/01/2018



- HM40125
by:
1993 Ford F-150

Perfect fit! Makes wiring sooooo much easier! Excellent product. I highly recommend. Get it from etrailer.com Great communication and fast shipping.



- HM40125
by:
1990 Ford F-150,F-250,F-350

Great product, arrived earlier than expected and easy install.



- HM40125
by:
1998 Ford Ranger

Product was in great shape shipping very reasonable time But the part was not the right one for my 1998 ranger ( I must have overlooked the Part # and should have researched deeper) my loss in all thank you



- HM40125
by:
1989 Ford F-150, F-250, F-350

very fasting shipping


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Ask the Experts about this Hopkins Custom Fit Vehicle Wiring

  • Parts Needed To Add a 7-Way For a Brake Controller To a 1989 Ford F-350
    In order to add a 7-way trailer connector to a 1989 Ford F-350 you will need to combine a few parts as they do not make one complete kit for this vehicle. However, all that will be needed is the Hopkins Plug-In Simple Vehicle Wiring Harness part # HM40125 and then the Universal Installation Kit for Trailer Brake Controller part # ETBC7. The Hopkins Plug-In Simple Vehicle Wiring Harness provides a 4-way and will plug into a port behind the rear bumper and then the Universal Installation...
    view full answer...
  • Which Trailer Hitches Fit a 1990 Ford F-150
    We have a number of hitches that could fit your 1990 Ford F-150. I like Curt hitches because of their thicker powder coat compared to other brands. It depends on which frame and which rear bumper your truck has as to which is the correct Curt hitch: Standard or step bumper models use part # 14001 Deep drop bumper models use part # C15511 Cab and chassis models use part # 13028 Also, if you need a 7-way wiring harness you can hardwire in part # 20023. Or if you only need a 4-way you can...
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Cole B
Installed by:
Cole B
Employee Alexander C
Written by:
Alexander C

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