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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 Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector

Hopkins Plug-In Simple Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector

Item # HM11140665
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Custom Fit Vehicle Wiring

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HM11140665 - Custom Fit Hopkins Custom Fit Vehicle Wiring
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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 OEM tow package wiring harness - no cutting or splicing required. 1-833-496-1390 to order Hopkins custom fit vehicle wiring part number HM11140665 or order online at Free expert support on all Hopkins products. Guaranteed Lowest Price and Fastest Shipping for Hopkins Plug-In Simple Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (19)
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  • Videos (2)
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Hopkins Custom Fit Vehicle Wiring - HM11140665

  • 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 OEM tow package wiring harness - no cutting or splicing required.


  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Designed for use with a factory tow package
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily - no cutting or splicing
    • Locate connection point on driver's-side frame rail
    • 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


This custom-fit T-connector plugs into your vehicle's OEM connector, which is located on the driver's-side frame rail, between the rear axle and rear bumper.

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.

11140665 Plug-in Simple Hopkins Replacement Harness for Factory Tow Package - 4-Pole - OEM

Installation Details HM11140665 Installation instructions

This Product Fits The Following Vehicles

  • 2009 - 2014 Ford Van with factory 4-flat

California residents: click here

Video of Hopkins Plug-In Simple Wiring Harness for Factory Tow Package - 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 Plug-In Simple Wiring Harness Installation - 2011 Ford Van

Today on this 2011 Ford van, we're going to review and install the Hopkins Plug-In Simple Wiring Harness, part number HM11140665. This is what your wire harness looks like when it's installed on our van. This is a great component to add to your van if you don't have an existing four pole flap, because a lot of these vans do the port that's underneath the vehicle that's just not being used. Also, if the original equipment four pole has gotten corroded beyond use, you can also replace it with this part number as well.Let's cover what you get when you order this part number. First off, this is our wire harness right here that has a side that plugs into the factory port and your four pole flap on the other side. This whole wire harness is gonna be 70 inches long overall.

So you got plenty of room to route this wherever you like. Comes with a small cap to cover the four pole when not being used, couple of zip ties, which chances are you're gonna need some more of when you install it, and some dielectric grease to help protect the contacts. Now this wiring harness will cover all your basic lighting functions and provides a basis for adapters to upgrade from a four pole like this, up to a seven or a six pole.Our connection point is gonna be on the driver's side frame rail, starting from the back, work our way forward and you'll probably see this little ground scoot right here and maybe this block with some wires going into it. We actually want the flat connector that's associated with it right here. I already got it loosened up, so it's easy to see.

And really all I gotta do is take this cap off right here. To take off the cap, we just gotta push down on this tab right here and it comes apart. We'll take the two halves, plug them together until they click.We'll take your other end of our wire, and route that towards the center of our hitch. So once we have it routed the way we want it, I'll use one of the zip ties to help hold it in place and also take up some of the slack. Our cover, just simply slides over.

This part here goes in this groove. Just kind of work it over into place. It's a friction fit. Goes on just like that when you're not using it. You can also use this loop to kind of hold it in place for you if you don't have a bracket for it.

It's a good idea to try it out with a tester first before you do it on a trailer to verify everything's working. I'm gonna use a simple tester like this one here. This is part number I26. And I'll go through the functions.We'll try our running light circuit, which will be the brown wire. And we'll check your yellow wire for left turn signal, that will also be a brake signal. Our green wire for our right turn signal and brake. And then I'll hold the brake pedal down and that should give us a solid signal on both of the previous wires. And that'll finish it for Hopkins Plug-In Simple Wiring Harness, part number HM11140665 on this 2011 Ford van.

Customer Reviews

Hopkins Plug-In Simple Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector - HM11140665

Average Customer Rating:  4.9 out of 5 stars   (19 Customer Reviews)

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


Very fast delivery.

2014 Ford Van

Easy hook up to trailer the boat.


Excellent product. Arrived fast, all in tact. Took 5 min to install - plugged right into my factory wire harness and ready to tow with lights. Highly recommend, A shop wanted $ 150 and 2 hours - Thanks E Trailer.

2010 Ford Van

Stevie Wonder could have installed the hitch and the wiring harness I received from etrailer. That's how awesome etrailer is. From excellent online views of the product to overnight delivery of packages with everything you need in them. Oh did I tell you everything fit together so perfectly that Stevie Wonder could have done it. Peace---Joel---

2014 Ford Van

easy ordering , nice people to deal with, simple to install saved me by doing it myself , car dealer wanted 246.00 simple to install,quality products , love the mounting bracket. thank you.

fantastic, thank you for saving me hundreds of dollars
David P - 02/23/2020


I could not find the correct trailer light adapter for my E250 van at 4 different auto parts stores, or at my unhelpful local ford dealer, but found it easily on your web sight. Connection was easily accomplished, and I appreciated the electrical grease for the connection head. Also, your price was less than expected. Thanks.


Is just what I needed and works well when being used. Thank you


Just like the hitch for my 2010 Ford E350, this wiring harness connected very easily and worked perfectly.


The wiring kit is a quality product. Etrailer is a great company to deal with.

2011 Ford Van

Very good service everything was on time


Easy installation. A year later, no issues. I recommend for all your trailer needs!


Just what I needed to get my job done


2009 Ford F-150

Great fit.....excellent company to deal wth




Fast delivery and you get exactly what you order




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

  • 2014 Ford E350 Van Trailer 4-Way Trailer Wiring Kit
    We have the Hopkins 4-way part # HM11140665 which is designed to fit the square connector you send in a picture of that would work well for you.
    view full answer...
    Image 1 for
  • Will The 4-Way Flat Vehicle Wire Harness Work With Reverse Sensors On a 2011 Ford E-350 Van?
    I wasn't able to find anywhere in the owners manual for your 2011 Ford E-350 Van that the reverse detection system is deactivated when connected to a trailer. The Hopkins Plug-In Simple Wiring Harness # HM11140665 that you found is designed to replace a damaged connector on your Van that came with the factory 4-way. If your Van did not include a factory 4-way you will need the T-One Vehicle Wiring Harness # 118551. This will allow you to connect to the tail lights on your Van to gain...
    view full answer...
  • Brake Controller and 7-Way Trailer Connector Installation on 2013 Ford E-350 Van
    Your van is mostly prewired for a brake controller, but you will need to do some additional wiring because your van isn't equipped with the 7-way, as shown in the video I've linked for you. You'll need a brake controller, a brake controller harness and our # ETBC7 brake controller installation kit. If the van isn't already equipped with a 4-pole connector, you'll need to add one using part # 118551. The kit includes an adapter to convert the 4 pole to a 7-way. For a reasonably priced...
    view full answer...
  • Brake Controller And Wiring Harness For A Pre-Wired 2014 Coachmen Leprechaun
    We can definitely get you set up with a brake controller and all the needed parts for your 2014 Leprechaun on a Ford E350 chassis. Our fitguide can be a little confusing, but if you choose the year and make, the E-Series vans will show up under “Van”, if you want/need to search for other items. With that said, with your Leprechaun being pre-wired, it will make things a lot easier. However, this will typically mean two things, so I have options for both listed below. Pre-Wired With 7-Way: Tekonsha...
    view full answer...

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Info for this part was:

Employee Joe V
Test Fit:
Joe V
Employee Mike L
Expert Research:
Mike L
Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Chris R
Video Edited:
Chris R
Employee Alexander C
Written by:
Alexander C

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