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  4. Wiring Adapter
  5. Plugs into Brake Controller
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Custom Wiring Adapter for Hayes Brake Controllers - Dual Plug

Custom Wiring Adapter for Hayes Brake Controllers - Dual Plug

Item # HA81795-HBC
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HA81795-HBC - Wiring Adapter Hayes Accessories and Parts
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Install your Hayes electric trailer brake controller quickly and easily with this custom wiring adapter. One end plugs into the controller, and the other plugs into the built-in port beneath your vehicle's dash. 1-800-940-8924 to order Hayes accessories and parts part number HA81795-HBC or order online at Free expert support on all Hayes products. Guaranteed Lowest Price and Fastest Shipping for Custom Wiring Adapter for Hayes Brake Controllers - Dual Plug. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (17)
  • Q & A (0)
  • Photos
  • Why etrailer?

Hayes Accessories and Parts - HA81795-HBC

  • Trailer Brake Controller
  • Wiring Adapter
  • Plugs into Brake Controller
  • Hayes
  • Vehicle Specific

Install your Hayes electric trailer brake controller quickly and easily with this custom wiring adapter. One end plugs into the controller, and the other plugs into the built-in port beneath your vehicle's dash.


  • Plug-in wiring adapter allows for quick, simple installation of your electric trailer brake controller
  • No cutting or splicing required
    • Custom connector end plugs into the built-in port beneath the dash of your vehicle
    • Opposite end plugs into the back of your electric brake controller
  • Compatible with time-delayed and proportional brake controllers from Hayes
  • Made in the USA

Installation of Hayes Brake Controller Adapter

To install your Hayes electric brake controller, you need to connect the wiring of the controller to your vehicle. Certain auto manufacturers offer pre-wired options, typically known as tow packages, in which the wiring is run for you from the dash to the trailer connector on the back of your vehicle. Usually when this is done, a port is installed at your dash so that you can easily plug in a brake controller.

This adapter plugs into the 4-pin connector on your vehicle's built-in brake control wiring harness. The harness is located underneath the dash, to the left of the steering column, taped to another harness near the emergency brake pedal.

No hardwiring is required to install this adapter. After you plug it into the factory port, you simply plug the other end of the adapter directly into your electric trailer brake controller. Because there are no wires to connect, installation is not permanent. You can unplug and remove your brake controller at any time to transfer it to another vehicle or securely stow it away.

81795HBC Hayes Dual-Mated Brake Control Wiring Harness - Dodge

Replaces 81795-HBC

This Product Fits The Following Vehicles

Customer Reviews

Custom Wiring Adapter for Hayes Brake Controllers - Dual Plug - HA81795-HBC

Average Customer Rating:  4.8 out of 5 stars   (17 Customer Reviews)

Install your Hayes electric trailer brake controller quickly and easily with this custom wiring adapter. One end plugs into the controller, and the other plugs into the built-in port beneath your vehicle's dash.


Install was easy on my 2019 Ram 1500 using up to pull car Hauler Trailer. Just plugged right into the existing harness

2017 Dodge Ram Pickup

Wiring harness could not be easier to install and use. Matched right up as advertised to existing wiring in my 2017 Ram 1500.

No problems however for my 10 ft pop up there is a bit too much gain. At the minimum setting the trailers brakes in my opinion are a bit heavy
Brian G - 09/21/2018

2017 Dodge Ram Pickup

I ordered this for my 2017 Ram 1500. The package says it is for a 2010-2012 and 2015 Ram. I haven't tried to install it yet, but i am hoping there isn't a mistake. I can't rate this because of that. This review would not submit without a rating, so disregard the rating for now.

Thanks for the review Jerry, our 2015 Ram 1500 is in the 4th generation Rams that are from 2009-current 2018 and the wiring adapters for the brake controller are be the same for this generation. I hope this helps and please let us know if you have additional questions.
-- Etrailer Expert Rachael H - 04/03/2018


wiring harness worked great. Got it on time and at a reasonable price.


Plug And play super easy perfect

2017 Ram 1500

Plug and play very simple install


Worked as advertises. Plug and play in stall.


plug and play took only 10 mins.

2017 Ram 1500

Makes installation fast and easy.


Made installation super easy


Product came in on time. Staff was really helpful. And the plug in design took only about 15 min to install 5 stars for this company


made my install so easy....must have... thanks


They told me it would be a week for delivery since it was coming by mail, I got it in three days. Very fast and easy to order.


Worked perfectly.


Plus in is seconds, could not be any easier.


perfect fit.


Very easy to install


Ask the Experts about this Hayes Accessories and Parts

  • Hayes Lemmerz Brake Controller Install Harness Recommendation for 2012 Ram 1500
    The Install harness needed to install a Hayes Lemmerz brake controller in a 2012 Ram 1500 is the part # HA81795-HBC. The adapter you sent in a picture of looks similar to what you need, but not quite the same.
    view full answer...
    Image 1 for
  • Brake Controller Wiring Harness for a 2017 Ram 1500 and Hayes Genesis Brake Controller
    For Hayes brake controllers the proper brake controller wiring harness for a 2017 Ram 1500 is # HA81795-HBC.
    view full answer...
  • Brake Controller Harness for Hayes Brake Controller Install on 2016 Ram 1500
    We've got what you're looking for. You'll need the # HA81795-HBC harness. One end plugs into the pigtail exiting the rear of your Hayes 81770 Endeavor brake controller, the other plugs into the factory brake controller connector. The connector is located under the dash, just above where the driver's right knee would be as shown in the provided photo. I'll link to an install video that you might find helpful. The video shows a different brake controller being installed on a 2016 Ram 1500,...
    view full answer...
    Image 1 for
  • Will Hayes Syncronizer Brake Controller Work on a 2016 Ram 1500
    In the newer Rams the stoplight switch of yhe truck uses a lower voltage signal than most vehicles so only some controllers can be used. The confusion you have experienced with your local dealer and trailer shop is most likely stemming from that. We have confirmation from Hayes that their Syncronizer part # HA81725 will work on your 2016 Ram 1500 and all you would need to install it is the harness part # HA81795-HBC.
    view full answer...
  • Correct Adapter for Hayes Brake Controller on 2018 Ram 1500
    The correct wiring adapter for a 2018 Ram 1500 using a Hayes brake controller such as the Syncronizer # HA81725 is the Custom Wiring Adapter # HA81795-HBC.
    view full answer...
  • Recommended Brake Controller For 2016 Ram 1500
    The Hayes Brake Controller you asked about is a time-delayed controller. A time-delayed controller has a preset intensity and is activated when the brake pedal is pressed on the towing vehicle. The brake controller also has a manual override, and can be mounted at any angle or direction. For your Ram 1500 you will also need the plug-in adapter, part # HA81795-HBC. I recommend the Tekonsha P3, part # 90195. This is one of our most popular brake controllers because it is easy to install...
    view full answer...
  • Brake Controller Harness For Installing Hayes Brake Controller on 2020 Ram 1500
    The correct brake controller wiring harness for both the 2020 Ram 1500 and the 1500 Classic would indeed be the # HA81795-HBC harness you mentioned. The harness plugs in to the factory connector located above where you right leg would be as you're sitting in the driver's seat. The connector you're looking for is shown in the provided photo.
    view full answer...
    Image 1 for
  • Hopkins Brake Controller Install Harness Recommendation for a 2016 Ram 1500
    The Hopkins brake controller adapter needed for installing in a 2016 Ram 1500 is the part # HA81795-HBC. One end of the harness will plug into the controller and the other will go to the port under the dash of your truck.
    view full answer...
  • Troubleshooting Brake Controller Installation on a 2011 Ram 2500 with OEM Controller
    When you're installing the Hayes controller, like the Energize III+ # HA81742B, on your 2011 Ram 2500 you should be able to install it by using the Wiring Adapter # HA81795-HBC. This plugs into the existing factory plug so you won't have to do any splicing with your wiring. If you're disconnecting wires and splicing the brake controller in then that may be why you're experiencing this. Under normal circumstances a brake controller should not be affecting the tail lights on the vehicle...
    view full answer...
  • How Does Ram Factory Brake Controller Install in 2012 Ram 1500
    On your 2012 Ram 1500 that has a factory 4/7-way, there will be a port under the dash for connecting a trailer brake controller like the (presumably used) OEM unit you bought. There are lots of these units out there as many owner's end up replacing the OEM units with better-performing aftermarket controllers like the Prodigy P3 # 90195. The controller does not require any programming to operate. The vehicle computer may need to be flashed by the dealer if you find you get error messages...
    view full answer...
  • Bypassing Factory Brake Controller (ITBC) on 2017 Ram 3500
    Even after they've been out for more than 10 years, we continually hear complaints from folks about the factory integrated brake controllers on their trucks. We never seem to hear "I love it, it works great!" From what I understand, the factory brake controllers have a power adjustment that allows you to increase or decrease the intensity of the braking force and a manual switch that applies the trailer brakes independently of the truck brakes. That's it, no further adjustments are possible. If...
    view full answer...
  • Plug-N-Play Wiring Adapter Harness for Brake Controller in a 2022 Ram 2500
    We do have plug-n-play wiring adapter harnesses available for your 2022 Ram 2500. The correct harness will depend on the brake controller that you have. - For a Hayes brake controller you will want the # HA81795-HBC - For a Redarc Tow Pro Brake Controller you will want the # 331-TPH-020 - For a Tekonsha Brake Controller you will want the # 3024-P - For a Curt Brake Controller you will want the # C51458 - For a Hopkins Brake Controller you will want the # HM53056 The number you provided...
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Edited by:
Lindsey S
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Cole B
Installed by:
Cole B
Employee Tammy D
Written by:
Tammy D

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