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Custom Wiring Adapter for Hayes Brake Controllers - Dual Plug

Custom Wiring Adapter for Hayes Brake Controllers - Dual Plug

Item # HA81782-HBC
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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. Call 800-298-1624 to order Hayes accessories and parts part number HA81782-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.
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  • Reviews (14)
  • Q & A (0)
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  • Used (1)
  • Why etrailer?

Hayes Accessories and Parts - HA81782-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.

81782HBC Hayes Dual-Mated Brake Control Wiring Harness - Dodge and Chrysler

Replaces 81782-HBC

This Product Fits The Following Vehicles

Customer Reviews

Custom Wiring Adapter for Hayes Brake Controllers - Dual Plug - HA81782-HBC

Average Customer Rating:  4.8 out of 5 stars   (14 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.

- HA81782-HBC

Used as a replacement everything went g reat

- HA81782-HBC

Very easy hookup, no mess.

- HA81782-HBC
2004 Dodge Ram Pickup

Installed new trailer brakes as part of a renovation of a 1963 Aristocrat travel trailer. Easy installation - exactly what I hoped I was ordering. Will order from again.

- HA81782-HBC

I only needed the 4 pin plug in to connect brake controller. The other end I cut off to hard wire to tow vehicle. The plug itself was built well.

- HA81782-HBC

Would up using this as a pig tail because my truck didn’t have the factory wiring harness. But it worked just fine for that!

- HA81782-HBC
2007 Dodge Durango

Installation was as anticipated, connections matched.

- HA81782-HBC

this saves so much time under the dash and is a good product.

- HA81782-HBC

It worked

- HA81782-HBC

Exactly what I was needing at a great price. Fast shipping great communication

- HA81782-HBC
2004 Dodge Ram Pickup

Everything was perfect. Took me longer to get it out of the package than to actually hook it up. Thank u!

- HA81782-HBC

Great quick response Thank I am back on the rode.

- HA81782-HBC

Product was shipped quickly and was exactly what I ordered.

- HA81782-HBC
2002 Dodge Ram Pickup

Arrived quickly and was exactly what I needed

- HA81782-HBC

Great fast service and product


Ask the Experts about this Hayes Accessories and Parts

  • Brake Controller Install Harness for Hayes Controller in 1997 Dodge Ram 1500
    For your 1997 Dodge Ram 1500 the brake controller install harness part # HA81782-HBC is the correct harness to use to install a Hayes controller like the Hayes Energize XPC which is no longer available.
    view full answer...
  • 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 Wiring Harness For A 2009 Dodge Ram 2500
    The correct wiring harness that will connect the Hayes Syncronizer Trailer Brake Controller part # HA81725 to factory wiring harness on your 2009 Dodge Ram 2500 is the Custom Wiring Adapter for Hayes Brake Controllers part # HA81782-HBC. This a complete plug and play option that will not require hardwiring unless you do not already have a factory trailer connector installed, in that case you will need to use the hardwire wiring harness that comes with the Hayes Syncronizer Trailer Brake...
    view full answer...
  • Hayes Brake Controller Install Harness Recommendation for a 2009 Dodge Ram 2500
    The correct install harness to use with your Hayes Genesis brake controller part # HA81790 to install it in your 2009 Dodge Ram is the part # HA81782-HBC.
    view full answer...
  • Parts Needed to Install Brake Controller in a 2008 Dodge Ram
    To install the Hayes Blackbird Trailer Brake Controller in your 2008 Dodge Ram 1500 all you need is the install harness part # HA81782-HBC which will plug into the port under the dash. If your truck has a 7-way you would be set with just those two things. If your 2008 Dodge Ram pickup does not have a factory trailer connector (4-pole or 7-way) at the back bumper then for brake controller installation you will do a hardwired installation using our Brake Controller Installation Kit # ETBC7....
    view full answer...
  • Can Hayes Energize III Install in 2001 Dodge Ram 1500 ST 4X4
    For your 2001 Dodge Ram 1500 the Hayes Energize III part # HA81742B that you referenced can be installed if you use the install harness part # HA81782-HBC that you referenced as that is the custom fit harness designed for your truck.
    view full answer...
  • Red LED on Energize III Brake Controller # 81741B Lit When Brake Applied and No Trailer Connected
    I went out to our warehouse and pulled one of the Energize III controllers off of the shelf and bench tested it. I found that with no trailer connected, the red light on the controller will indeed light up when the vehicle brakes are applied. Your controller is not malfunctioning and is good to go.
    view full answer...
  • Wiring Harness to Connect Hayes Syncronizer Brake Controller # HA81725 to 2005 Dodge Ram 1500
    The existing wiring harness you have used to connect your Hayes Syncronizer Trailer Brake Controller # HA81725 to your 2007 Dodge Dakota will also work to install this unit in your 2005 Dodge Ram 1500. The harness is part # HA81782-HBC and it plugs in between the hardwired connector at the back of the controller and the connection port under the dash on your Ram 1500. The Hayes Syncronizer brake controller # HA81725 is a time-delayed type as opposed to a proportional type brake controller....
    view full answer...
  • Troubleshooting Brake Controller Install Wiring on Dakota that Lights Up Brake Lights All the Time
    The standard brake controller wiring colors don't always match the colors of vehicle brake controller wiring. Since your truck isn't functioning proplery though it would seem like your setup needs to be rewired. It's odd that you are having this problem though as we've sold quite a few install harnesses for your 2004 Dodge Dakota like the part # 3020-P which matches what you have in your picture but we've not seen this specific problem. It makes me think maybe your truck was rewired at...
    view full answer...
    Image 1 for
  • Brake Controller Connector Location on 2005 Dodge Ram 1500
    If your 2005 Dodge Ram 1500 came with a factory 4-Way or 7-Way trailer connector at the rear then yes, there is an OEM harness under the driver's side dash and to the right of the emergency brake pedal. Typically this should be blue but the color could vary. If you don't have a factory trailer connector at the rear of your vehicle then you'll need to hardwire everything. The brake controller I recommend, if you don't already have one, is the Hayes-Lemmerz Energize III+ # HA81742B because...
    view full answer...
  • How to Install Brake Controller in a 2004 Dodge Ram with 7-Way
    If the 7-way is factory on your 2004 Dodge Ram the install harness part # HA81782-HBC that you referenced would be the correct product to use to install the # HA81760. To see where the harness should be on your vehicle check out the video I attached that shows a similar brake controller and harness being installed in a vehicle like yours. The harness should be under the dash near the emergency pedal. If not, then you will have to hardwire the controller to your vehicle/7-way. For a...
    view full answer...
  • Are Brake Controller Wiring Harnesses for the 2004 Dodge Ram 2500 Universal
    Brake controller wiring harness # 3020-P for the 2004 Dodge Ram will work with Tekonsha, Draw-Tite, and Reese brake controllers that have a plug and not just loose wires. Curt harness # C51332 will work only with Curt brake controllers. Hopkins harness # HM47755 only works with Hopkins controllers. And as far as I could ascertain Hayes harness # HA81782-HBC only works with Hayes controllers. All of these harnesses are also only for controllers that have the plug on them and not just loose...
    view full answer...
  • How to Find the Stop Light Wire on a 1997 Dodge Ram 1500
    I do have an option for you but unfortunately we would not have access to the wiring diagram for a 1997 Dodge Ram 1500. In order to find the cold side of the brake pedal which is the wire that will need to be spliced into to install a brake controller, you would need to test each wire with a circuit tester like part # 40376 for the wire that only receives power while the pedal is depressed. Once you find this wire you can use a quick splice connector like part # SWC501746-1 to avoid completely...
    view full answer...

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Condition: Like New

Notes: May have damaged packaging or minor cosmetic blemishes.

Our Price: $16.95
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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
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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