bing tracking image
  1. Custom Fit Vehicle Wiring
  2. Hopkins
  3. Custom Fit
  4. 4 Flat
  5. Trailer Hitch Wiring
  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 # HM40115
Retail:$27.61
Our Price: $22.67
You Save: 18%
Custom Fit Vehicle Wiring

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Add to cart
In Stock
Hopkins Custom Fit Vehicle Wiring - HM40115
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

Need help with installation?
Locate installers near me
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 HM40115 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 (11)
  • Q & A (0)
  • Photos

Hopkins Custom Fit Vehicle Wiring - HM40115

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

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
    • 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 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.



11140115 Plug-in Simple Hopkins T-Connector with 4-Pole Trailer Connector

Replaces 40115

Installation Details HM40115 Installation instructions

This Product Fits The Following Vehicles



California residents: click here



Customer Reviews

Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - HM40115

Average Customer Rating:  5.0 out of 5 stars   (11 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.

by:

I've never had better online service.



by:
1986 Ford F-150, F-250, F-350

Easy peasy to install



by:
1981 Ford F-150

Product installed fine on my 1981 Ford F-150. Recommend purchasing 4 pole plug mount to go with it, unless you will be connecting this to a 7 pin connector or similar for electric breaks or auxiliary functions since those kits typically have their own mounts.



by:
1984 Ford Bronco

This plug is great! Working on my brother's Bronco, the trailer wiring was a mess after stripping out the old wires and putting this in line plug in, well it looks great and works better than before.



by:
1985 Ford Bronco

Easy to install on my 1985 Bronco .trailer lights work great now. Fast shipping great price . I will order all my trailer needs from etrailer.com



by:
1986 Ford F-150, F-250, F-350

Easy to order the plug I needed for my 1986 F150



by:
1986 Ford F-150, F-250, F-350

the part works great



by:
1984 Ford F-150, F-250, F-350



by:
1983 Ford F-100, F-150, F-250, F-350



by:



by:


11
11

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

  • Instruction Manual Needed for a Tekonsha 2016 Hydraulic Brake Controller On a 1986 Ford F-250
    The wiring diagram for wiring your truck to your trailer can be found on our wiring page (see link). We also have a brake controller wiring diagram on our brake controller wiring page (see link). If you are wiring a 7-Way connector I would recommend the # ETBC7 wiring kit which has all of the wiring, circuit breakers and parts needed to install the 7-way once you have a 4-Way installed on the truck. If you need a 6-Way connector then the # ETBC6 wiring kit will be what you need. You can...
    view full answer...
  • Recommended Trailer Wiring for 7-Way Trailer Connection and Brake Controller for 1986 Ford F-350
    For your 1986 Ford F-350, the factory wiring connector you need to start with is the Hopkins Plug-In Simple Vehicle Wiring Harness # HM40115. This custom-fit connector plugs into your Ford F-350's wiring harness, which is located beneath your vehicle along the driver's-side frame rail. Then you will need to use the Universal Brake Controller Wiring Kit # ETBC7 to utilize that 4-way connection and add the other 3 functions of reverse, 12v, and brake controller output. This kit will give...
    view full answer...
  • Receiver Hitch Recommendation for 1986 Ford F-150 with Step Bumper
    The Curt Class IV Trailer Hitch Receiver, # 14001, is a confirmed fit for the 1986 Ford F-150 4-Wheel Drive with a standard or step bumper. This fully welded trailer hitch receiver bolts onto the F150's frame with no welding required. I am including a link to all of the hitches that we have available for a 1986 Ford F-150. Just select your bumper style and you will see a list of the hitches that are available for your truck. Each of those listed will also give you the recommended ball...
    view full answer...
  • Trailer Wiring for 1986 Ford F-150 that Uses Spade Connectors for Connection
    For a 4-way wiring kit that fits your 1986 Ford F-150 that uses spade connectors you'd want the part # HM40115 which you can see the spade connectors in the attached picture.
    view full answer...
  • Recommended Class IV Trailer Hitch Receiver For 1984 Ford F-150
    For a Class IV trailer hitch receiver on your 1984 Ford F-150, I recommend the Curt Trailer Hitch Receiver - Custom Fit - Class IV - 2" # 14001. This is a bolt on square tube design with a brlack powder coat finish over a protective base coat. If you have a deep drop bumper on your truck, then I recommend the Draw-Tite Trailer Hitch Receiver - Multi Fit - Class IV - 2" # 37130. This deep drop hitch is a bolt-on install with a round-tube design. It is black powdercoat over an e-coat...
    view full answer...
  • Installation of 7-Way RV Connector on 1981 Ford F-250
    If your 1981 Ford F-250 already has a 4-way connector installed simply add etrailer"s Universal Installation Kit for Trailer Brake Controller, # ETBC7. This kit includes everything you need to install an electric trailer brake controller and 7-way connector. If your truck does not already have a 4-way flat installed, use the Hopkins Plug-In Simple Vehicle Wiring Harness, # HM40115 to install the 4-way flat connector first. Please note the linked product videos below along with a couple...
    view full answer...
  • Parts Needed To Install 7-way Connector In 1984 Ford F-150 4x4
    The 7-Way Pre-Wired Car Connector, 7' Lead # 20023 you were looking at is designed to go in the bed of your 1984 Ford F-150 4x4 and splices in to the factory 7-way connector. If you do not currently have a 7-way connector you will need to add one starting with a 4-way connector # HM40115 and then add a 7-way connector using # ETBC7 which will plug into your newly installed 4-way connector and only require a few more connections which are as follows: Black wire to vehicle battery with...
    view full answer...

Do you have a question about this 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 Alexander C
Written 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.