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Universal Wiring Adapter for Hayes Trailer Brake Controllers

Universal Wiring Adapter for Hayes Trailer Brake Controllers

Item # HA81789-HBC
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HA81789-HBC - Plugs into Brake Controller Hayes Accessories and Parts
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Designed for applications that do not come equipped with a brake control wiring harness port from the factory, this adapter plugs into your Hayes electric trailer brake controller at one end and the other end splices into your vehicle's wiring. Call 800-298-8924 to order Hayes accessories and parts part number HA81789-HBC or order online at etrailer.com. Free expert support on all Hayes products. Guaranteed Lowest Price and Fastest Shipping for Universal Wiring Adapter for Hayes Trailer Brake Controllers. Accessories and Parts reviews from real customers.
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Hayes Accessories and Parts - HA81789-HBC

  • Trailer Brake Controller
  • Wiring Adapter
  • Hayes
  • Plugs into Brake Controller
  • Universal

Designed for applications that do not come equipped with a brake control wiring harness port from the factory, this adapter plugs into your Hayes electric trailer brake controller at one end and the other end splices into your vehicle's wiring.


Features:

  • Universal wiring adapter provides a quick-disconnect for your electric trailer brake controller
    • No need to cut the plug off the brake controller to wire it directly to your vehicle
    • Makes it simple to plug and unplug controller for use in a different vehicle or for storage when you're not towing
  • Wire end splices into your vehicle's wiring
    • Use on a vehicle that does not have a factory tow package or is not equipped with a plug-in port
  • Connector end joins with the plug on your electric brake controller
    • Compatible with time-delayed and proportional brake controllers from Hayes
  • Wire length: 24"
  • Made in the USA


Installation of Universal 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. However, if no port is present, you will have to splice into your wiring.


With this universal adapter, you can install your Hayes brake controller without having to wire the controller directly to your vehicle. If your vehicle has a factory tow package, just splice the pigtail end of the adapter into your vehicle's factory brake control harness wiring, and then plug the other end of the adapter into the controller. If your vehicle doesn't have a factory tow package, you'll have to hardwire the pigtail end of the adapter into your vehicle's wiring. Because only the adapter is hardwired to your vehicle, you can unplug and remove your brake controller at any time to transfer it to another vehicle or securely stow it away.


If your vehicle is not equipped with a factory tow package, you will need to purchase additional equipment to ensure that the signals from your brake controller are sent to your trailer's brakes. We recommend etrailer.com's exclusive 7- and 4-way brake control installation kit (ETBC7 - sold separately).



81789HBC Hayes Universal Pigtail Brake Control Wiring Harness

Replaces 81789-HBC






Customer Reviews

Universal Wiring Adapter for Hayes Trailer Brake Controllers - HA81789-HBC

Average Customer Rating:  4.7 out of 5 stars   (15 Customer Reviews)

Designed for applications that do not come equipped with a brake control wiring harness port from the factory, this adapter plugs into your Hayes electric trailer brake controller at one end and the other end splices into your vehicle's wiring.

- HA81789-HBC
by:

It's a plug and 4 wires. I haven't installed it yet but most likely it will work. It would have been nice if they had the vehicle-specific cable for their brake controller but then maybe my vehicle doesn't have a receptacle (2006 Jeep Commander). Not sure yet, haven't got that far, don't know when I will. I wanted to do it yesterday but it's been cold and rainy here and I don't have room in my garage to work so I've been working on the Jeep in the driveway. I got the trailer hitch mounted the other day and now I'm working on the wiring for the trailer plug. I put the Jeep up on 4 ramps to give me room to get under it and run wiring. At 275 pounds I need the extra space. When the rain stops and the wind dies down I will make an attempt to install this device, but I got this email first asking me for a review and an opinion. I don't really have an opinion yet and I can only write a review of what I know so far, which is very little. The instructions that came with it are quite simple. They tell you to plug it in and then read the instructions that came with the controller that you plugged it into. I was hoping for something more specific, like where should I look for the signal from the brake pedal to the stop lamps. I guess I'll start at the pedal and look for a place to tie in. Maybe YouTube has a video demonstrating the installation procedure for the controller using this Wiring Adapter. That would be nice too. The price for the item was fair, as was the shipping cost and delivery time. No complaints with any of that. I'd share a picture of the product but actually there's one on the page where it is advertised, the page from which I ordered it. I'm not sure why they want me to "share a picture of my product". As for the problem that it solved for me... I didn't have one. It solved that problem. Now I have one. 580967


Comments
Thank you for your review. There is not a port to plug a brake controller adapter into on the 2006 Jeep Commander. If the 2006 Jeep Commander has a factory towing package the wires for a 7-way will be ran to the front of the Jeep. You will then use the hardwire adapter part # HA81789-HBC
Universal Wiring Adapter for Hayes Trailer Brake Controllers
$29.84
to splice into those wires. You will also need part # 5506 to complete the wiring to the battery. If the 2006 Jeep Commander does not have a factory towing package it requires the 7-way plug to be hardwired. In this case an wiring kit part # ETBC7
Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
$111.57
is needed. The ETBC7 comes with the all of the necessary wiring to wire in the plug and the brake controller. If the vehicle does not have a factory towing package you may also need a 4-way flat connector if you do not already have one. The 4-way connector is part # 118408
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
$44.15
for the 2006 Jeep Commander without towing package. I have attached a video of installing a brake controller on a 2010 Jeep Commander with factory wires ran and a help article for the ETBC7 installation.
-- Heather A - 11/08/2018

45530

- HA81789-HBC
by:

Made trailer brake install easy. 875686



- HA81789-HBC
by:

866043



- HA81789-HBC
by:

Makes installing trailer brake controller super simple. Great product. 762812



- HA81789-HBC
by:

Just traded car in for new one. Much easier to leave old cars wiring alone and add new plug to replacement car. 673514



- HA81789-HBC
by:

The pig tail was easy to hook up. I was replacing a faulty unit so all the wires were handy. I did not want to do a hard wire in, this made it easy. 658645



- HA81789-HBC
by:

This product makes installing the brake controller so much easier, because I use this unit with multiple tow units it is nice to be able to unplug and move to the other vehicle. 333930



- HA81789-HBC
by:

Came quick, just as ordered. 334694



- HA81789-HBC
by:

Works great with the Hayes brake controller. Makes older vehicle installation a breeze. 327406



- HA81789-HBC
by:

Product arrived in good condition packaged very well as always great service and quick response.Will be buying from E-trailer again. Was able to find a replacement connector for my Hayes brake controller. Thank you keep up the good service. 266706



- HA81789-HBC
by:

Made the installation a breeze and allows for the plug and play of the controller when I need it as opposed to the permanent installation of a brake controller in my other pickup. 243612



- HA81789-HBC
by:

Fit good shipped fast thanks good peopl e. 241820



- HA81789-HBC
by:

Product quality and function is every bit as good as expected. 239352



- HA81789-HBC
by:

Very pleased with product. Better than the factory of same product. It arrived before estimated date and installation was easy. 199138



- HA81789-HBC
by:

etrailer.com delivered as promised. Fast friendly service. Product arrived quickly as was exactley what I needed. The how to video was spot on. Thanks, Dave W. 177657


15
15

Ask the Experts about this Hayes Accessories and Parts

  • Available Brake Controller to Fit a Honda Goldwing Towing a Tent Trailer
    I found a brake controller for your Honda Goldwing and tent trailer application. The Hayes Blackbird Brake Controller and Universal Wiring Adapter, # HA81789-HBC, are the controller and harness I recommend for your application. The Hayes controller is a time-delayed controller that will allow set and adjust the power output to a preset intensity. You will use the Universal Wiring Harness to wire the controller to your bike and trailer. I have attached an article that will show the typical...
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  • How to Install and Remove the Connector on Hayes Universal Wiring Adapter # HA81789-HBC
    The Hayes Universal Wiring Adapter # HA81789-HBC that you referenced is intended to plug into the back of a compatible Hayes brake controller such as their Genesis # HA81790 and then hard-wire to your vehicle using the 4 wire leads. The plug portion on the adapter is not intended to mate with any connectors on your 2007 Dodge Ram 2500 Pickup. There are other brands of brake controllers that do use adapters with plugs on both ends, one for the controller and one for the vehicle, such...
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  • Wiring Adapter for Hayes Lemmerz Energize III Brake Controller on a 2012 Chevrolet Suburban
    The adapter you are looking for is the # HA81789-HBC. This universal harness will need to be hardwire installed for your 2012 Chevrolet Suburban. Hayes does not offer a wiring harness that will plug into the brake controller port under the dash, if your vehicle has one. I have attached a Help Article on installing a brake controller on your vehicle for your convenience.
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  • Installing Hayes Energize III Brake Controller on 2012 Chevrolet Silverado
    To install your Hayes-Lemmerz Engerize III 81741B in your 2012 Chevrolet Silverado, you will want to use the Hayes Universal Wiring Adapter # HA81789-HBC. This universal adapter will need to be hardwire installed for your Silverado. Hayes does not offer a wiring harness that will plug into the brake controller port under the dash, if your truck has one. I have attached a help article on installing a brake controller in a 2007-2013 Silverado for you. This help article will walk you...
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  • How to Set the Right Power Output on a Brake Controller when Towing a Trailer
    For any brake controller, including the Hayes Blackbird, the set up process is basically the same. You start by setting the controller to the mid point for power output. Then with the truck and trailer coupled together on level, dry ground, tow at about 20 miles per hour or so. Then apply the manual override on full (not the truck's brake pedal). If the trailer brakes lock up and skid, adjust the power down and do the test again. If braking is insufficient then adjust the power up and...
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  • Trailer Wiring Harness to Install Hayes Brake Controller on 1996 GMC K1500
    For the Hayes Energize XPC brake controller the wiring harness that connects into the wiring of your 1996 GMC K1500 is # HA81789-HBC. It needs to be hardwired into your truck with the black wire going to 12 volt power, white to ground, the blue goes to the rear of your truck to power the trailer brakes, and the red connects to the stop light switch which is the wire coming from the truck's brake pedal connector that is hot only when the pedal is pressed. You can test this with a circuit...
    view full answer...
  • How to Wire the Hayes Blackbird Brake Controller to a 2009 GMC Sierra
    I attached a picture that has a diagram that details which wire from your 2009 GMC Sierra gets wired to the Hayes Blackbird Brake Controller part that you referenced. You will also need the universal install harness part # HA81789-HBC that you also referenced. The red wire of your truck goes to the black wire of the controller. The dark blue wire of truck goes to blue of controller. The light blue or orange wire goes to the red wire of the controller. The white wire of the truck...
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  • Troubleshooting Brake Controller that Powers Off and On Constantly
    It sounds like you have an intermittent short on either the power or ground wire of your Blackbird brake controller and it is constantly shutting off and powering on. Check the attachment point for the black and white wires of the controller to see if they are making a secure connection as it sounds like one of the wires is loose. I also attached a help article on brake controller installs for you to check out as well.
    view full answer...
  • Recommended Stoplight Circuit to Install a Brake Controller in a 1979 Ford F150
    You should be totally fine installing a brake controller in your 1979 Ford F150 by using the brake pedal switch as the stoplight switch for the controller. You will just want to find the circuit that only sees voltage when the brakes are applied and none when not and you would be fine. You would want to use a circuit tester like part # PTW2993. I attached an FAQ article on installing a brake controller from scratch that should be very helpful for you.
    view full answer...
  • Parts Needed to Install Hayes Blackbird Trailer Brake Controller in 1994 Chevrolet Blazer
    To install the Hayes Blackbird Trailer Brake Controller in your 1994 Chevrolet S-10 Blazer you will use the following items in addition to the controller itself. You will need Universal Wiring Adapter # HA81789-HBC that plugs in to the back of the Blackbird and provides 4 leads for hardwired installation. You will also use our brake controller install kit # ETBC7 which includes a 7-way socket, wiring, connectors, circuit breakers, etc. - everything you need to install the Blackbird....
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  • How Does Brake Controller Install in 2018 Chevy Colorado
    Your 2018 Chevy Colorado has the brake controller wiring ran under the dash of the truck but there isn't an adapter that uses a connector. Reason being there's only 4 blunt cut wires under your vehicle dash for the brake controller wiring and not a connector of any type. To install the Hayes controller part # HA81760 you need the Hayes universal connector part # HA81789-HBC to run to those wires. I attached an install video that shows a similar brake controller installed in a 2018 Chevy...
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  • Will Hayes Genesis Brake Controller Work on a 2005 Toyota Tundra Limited
    The Hayes Genesis # HA81790 with the adapter # HA81785-HBC is exactly what you need if your 2005 Toyota Tundra has the factory 7-Way. If your Tundra doesn't have a factory 7-Way then you'll need to use the pigtail # HA81789-HBC instead of the adapter, plus you'll need to install a 4-Way # 119179KIT and the Universal Installation Kit # ETBC7. As far as the air bag suspension goes, the Firestone # F4130 are for new Ram pickups so for your Tundra you're going to need the Firestone Ride-Rite...
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  • Complete Towing Setup for 2011 Chevy Express Van
    I can help you find everything you need. Assuming that this is the passenger/cargo version and not the cutaway cab and chassis, for a hitch I recommend going with the Curt Class V Hitch # C15320 . This is a 2" receiver hitch and is the highest rated hitch for your vehicle in terms of towing capacity- which will come in handy if you have the 3500 Express Van. If you've got the 1500 Express or 2500 Express, you'll still be limited to the factory recommended towing capacities for those models...
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  • Recommended Electric Over Hydraulic Trailer Brake Conversion for Dual 10K Axles
    The Disc Brake Kit # K2R1058D13 by Kodiak is the brake set that you will need to use for your 10,000 lb Dexter Torsion axles. When it comes to hardware, like the brake line, I recommend going with the Kodiak Hydraulic Brake Line Kit # 24TA-BLKIT which will wear better than other traditional brands. These lines are very flexible so the line is easy to maneuver under the trailer. The only downfall is that you cannot cut the line due to how hard and risky it is to do yourself. All you have...
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  • Installing Brake Controller on 2004 Ford Explorer With or Without Factory Tow Package
    The Hayes Engage Trailer Brake Controller - 1 to 3 Axles - Time Delayed # HA81760 will plug right into your dash if you have the factory 7-way when you use wiring harness # HA81783-HBC. The connection point on your Explorer is behind the glove box on the passenger side. If you have the factory 4-way then you can use the wiring harness # HA81789-HBC which is a pigtail and then use kit # ETBC7 to complete your wiring. If you don't mind cutting the harness, you can avoid the pigtail...
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  • Recommended Tekonsha Prodigy P3 Electric Brake Controller # 90195 for 2009 Chevy Silverado
    For your 2009 Chevy Silverado 1500 the duct tape is definitely a warning sign that things may not be installed correctly. The Hayes Genesis controller # HA81790 has a connection that is not the same as the Tekonsha controllers. The pigtail # HA81789-HBC was hardwired to give you the appearance of a factory connection as that truck model in 2009 had the wiring present under the dash but without a connector. My recommendation is to hardwire the Tekonsha harness in a similar way. The...
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  • Installing Brake Controller in 2018 Chevy Colorado
    On this page if you there is a heading titled "Featured Help Information" (most likely have to scroll down below part links), that will have the install video for a brake controller in a 2018 Chevy Colorado that I mentioned in the answer page you found. Your 2018 Chevy Colorado has the brake controller wiring ran under the dash of the truck but there isn't an adapter that uses a connector. Reason being there's only 4 blunt cut wires under your vehicle dash for the brake controller wiring...
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  • Installing a Brake Controller in a 2008 Lincoln Mark LT
    The Hayes Blackbird Trailer Brake Controller HA81726 is absolutely something you can install yourself and won't look out of place in your 2008 Lincoln Mark LT. If you have a factory 7-way, then you only need to add the custom wiring harness # HA81783-HBC to plug into your factory port beneath the dash. If you have the factory 4-way, then you can use that harness along with the # ETBC7. If you don't have factory wiring, you will need the Universal Wiring Adapter for Hayes Trailer...
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  • Trailer Brake Controller Installation in 1996 Chevrolet Tahoe
    You can install a brake controller like the Hayes Engage # HA81760 in your 1996 Chevrolet Tahoe using their wiring adapter # HA81789-HBC. You will also need our trailer brake controller installation kit # ETBC7 to complete your hardwired installation. So long as the Tahoe already has a 4-pole flat type trailer connector only the above items are needed, but if you do not have a 4-pole already you can use part # 118319. I have linked an installation video and article to help you with...
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  • How to Complete Hardwire Installation of Hayes Synchronizer Brake Controller
    I'd be happy to assist with that. In addition to the # HA81725 Hayes Synchroinizer brake controller, you'll need a universal wiring harness, part # HA81789-HBC and our Brake Controller Installation Kit, part # ETBC7. The kit includes everything necessary to install a brake controller in your vehicle, with the exception of the controller itself and a 4-pole trailer wiring harness for the vehicle. If you click the provided link, you can see some FAQ articles about installing a brake...
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  • Parts Needed to Install Hitch, Brake Controller, 7 Way and 4 Way on a 2002 Chevrolet Express Van
    First we will start off with the hitch. I recommend going with the Curt Class III Receiver Hitch, # 13040, for your 2002 Chevrolet Express Van. This hitch receiver bolts directly to the frame of the van with no welding or drilling required. For a t-connector we have the T-One Wiring Harness, # 118377, that plugs directly into your existing taillight wiring without any cutting or splicing. In order to obtain a 7 way at the back of the van, you will need to install a Universal Installation...
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  • Will the Hayes Engage Work in a 2013 Jeep Wrangler
    Yes, you can use the Hayes Engage Trailer Brake Controller # HA81760 and adapter # HA81789-HBC in your 2013 Jeep Wrangler and it will be sufficient to tow your cargo trailer. Some models will require a wiring kit to run wire to the battery, so if you're not getting power when the controller is plugged in, you'll need to use part # 5506 which includes 20, 30, and 40 amp breakers. This is mostly just something we've found in vehicles that did not come with the factory towing package. The...
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  • Recommended Brake Controller Wiring Adapter for 2017 Ram 1500 and Hayes Blackbird Controller
    The Hayes Blackbird Trailer Brake Controller HA81726 will use the Custom Wiring Adapter for Hayes Brake Controllers # HA81795-HBC for an easy fit in your 2017 Ram 1500. The harness is located underneath the dash, to the left of the steering column, taped to another harness near the emergency brake pedal. I've attached a video of a similar brake controller harness installation to assist with the location. Alternatively you could hardwire it or use the universal adapter # HA81789-HBC.
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  • 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...
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  • How Does a Hayes Brake Controller Wire to a 2011 Chevy Silverado
    On the 2011 Chevrolet Silverado Z71, the wiring for the brake controller is already ran and bundled underneath the dashboard on the driver side. This wiring may be taped together and tucked up and out of the way. There is not a plug-in wiring harness or brake controller port to plug into. In addition to connecting the brake control wires, there are 2 wires underneath the hood that will need to be connected (see FAQ and video). To install the Hayes Engage part # HA81760 you are going...
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  • How Does Hayes BlackBird Brake Controller Install In 2011 Chevy Silverado 1500
    To install the Hayes # HA81790 in your 2011 Chevy Silverado 1500 requires the install harness part # HA81789-HBC which gets wired to the brake controller wiring you have present under the dash of your truck. To see exactly how this is done and to also see the under-hood connections that need to be made check out the install video and help article I attached that covers this. The video shows a similar controller installed in a 2011 Silverado but the process is the exact same.
    view full answer...
  • Parts Needed to Install Hayes Syncronizer on 2001 Toyota Tundra with Factory 4-Way Flat Connector
    Thank you for all of the info! If you already have a 4-Way wiring connector on your 2001 Toyota Tundra then you just need the Universal Wiring Kit # ETBC7 and the Wiring Adapter # HA81789-HBC to install your father's Hayes Syncronizer Trailer Brake Controller # HA81725. The universal wiring kit plugs into your 4-Way and then comes with the extra wiring and connectors needed to route the wiring to your battery and cab to make the 7-Way fully-functional. I have attached a video of the...
    view full answer...
  • Where to Mount and Install a Brake Controller on a 2019 Ford Explorer
    If you already have a tow package you can use the custom adapter # HA81783-HBC, otherwise you need a Universal Wiring Adapter for Hayes Trailer Brake Controllers # HA81789-HBC to complete this portion of your install. The helpful review video at the 9:55 mark shows you where to find the port on your vehicle to plug the controller in. While this is a different controller referenced, it shows you where to find the connector in your Ford Explorer. It is a bit hidden under the dash underneath...
    view full answer...
  • Parts Needed to Install Brake Controller On 2008 Hyundai Veracruz
    To install the Hayes Trailer Brake Controller # HA817922BB, you will want to use the Hayes Universal Wiring Adapter # HA81789-HBC. This pigtail will splice into your vehicle. The white wire needs to be grounded. The black wire will connect to the battery. The red wire goes to the stoplight wire. The blue wire is connected to the trailer connector at the rear of the vehicle. You will also need a wiring harness for your vehicle if you don't already have one. I recommend the Tow Ready...
    view full answer...

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Info for this part was:

Edited by:
Lindsey S
Expert Research:
Adam R
Updated by:
Laura H
Updated by:
Sarah W
Installed by:
Cole B
Written by:
Tammy D

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