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Hayes Engage Trailer Brake Controller - 1 to 3 Axles - Time Delayed
Universal Wiring Adapter for Hayes Trailer Brake Controllers

Part Numbers: HA81760,HA81789-HBC

Retail:$123.89
Our Price: $90.97
You Save: 27%
Trailer Brake Controller

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Hayes Engage Trailer Brake Controller - 1 to 3 Axles - Time Delayed
part number: HA81760

Power output and braking aggressiveness can be easily adjusted with built-in buttons on this time-delayed brake controller. Includes digital display and manual override. Activates brakes with a preset intensity.

Features:

  • Brake controller activates trailer brakes with preset intensity
  • Adjustable power output control lets you select the amount of braking force
    • Easily accessible adjustment buttons let you change settings
  • Power ramp time setting lets you adjust how aggressively the brakes are applied
    • Select a higher setting for harder braking and lower for more gradual braking
  • Easy-to-read LED display communicates brake power output, ramp setting, and error codes
  • Slide-bar manual override is within easy reach for controlling trailer sway or stopping in emergencies
  • Built-in safeguards protect your vehicle and trailer
    • Current limiter protects vehicle from shorts in the trailer wiring
    • Hazard flasher immunity prevents pulsing of the brakes when flashers are activated
  • Dependable solid-state construction
  • Quick and easy installation with no mounting restrictions
    • No need to mount level - install anywhere at any angle
    • Mounting bracket and hardware included
    • Plug-in, vehicle -specific brake control adapter (sold separately) available for select vehicles to reduce installation time
  • Made in the USA


Specs:

  • Application: trailers with up to 3 axles (6 brake assemblies)
    • Compatible with electric or electric-over-hydraulic trailer brakes
  • Dimensions: 5" long x 3" wide x 1-1/4" tall
  • Limited lifetime warranty


Built-In Controls for Adjustable Power

Hayes Engage Controls and Components

Braking Output

During the initial setup process, use the adjustment buttons on the left front of the Engage controller to adjust the braking output. The output control lets you set the maximum amount of power that will be applied to your trailer's brakes. Typically, the output is only readjusted when you experience changing road conditions or if the weight of your trailer changes. To view the output setting, press either button and release. The output setting will appear as a percentage on the digital display - from 10 to 99. Use the plus and minus buttons to raise or lower the setting in increments of 5.


Power Ramp Time Setting

To adjust how aggressively the trailer brakes activate, press and hold the minus button until the display flashes, then release. The power ramp time (1-5 seconds) will flash. Use the minus button to cycle through the options. If you want to reach maximum power output faster, select a lower number. To get smoother braking action, select a higher number. When the desired ramp time is reached, press the plus button to select it. You can alter the ramp time setting to suit your driving preferences or to improve handling based on changing road conditions or varied trailer loads.


Manual Override

The Hayes Engage keeps the manual override within easy reach on the front of the module, great for stopping sway or controlling your trailer's momentum in emergencies. Push the slide-bar to activate the trailer's brakes and brake lights without you having to apply the brakes on your tow vehicle, perfect for limiting trailer movement while you re cruising.


Hayes Engage review

Quick, Simple Installation

Because inertia plays no role in the functioning of this controller, you do not have to mount the unit at any particular angle. Your mounting options are limitless, so long as you can still easily access the controller and manual override.


If your vehicle already has a plug-in brake controller wiring harness, just connect the unit to it. Otherwise, you will need to purchase a vehicle-specific wiring harness (sold separately) to plug into. If a harness is unavailable for your vehicle, hardwiring will be necessary.


See also etrailer.com's exclusive 7- and 4-way brake control installation kit (ETBC7 - sold separately) if you don't already have a 7-way plug at the back of your vehicle.


Note: If a custom brake control wiring adapter is not available for your vehicle, either a 20-amp or 30-amp circuit breaker (sold separately) may be required for installation.


Time-Delayed Braking

What is time-delayed braking

The Hayes Engage comes equipped with time-delayed braking. Every time you apply the brakes in your vehicle, a signal is sent - via the brake switch - to the Engage. The controller then sends power out to your trailer brakes to activate them with an intensity set by you, at a rate determined by you. Both the amount of braking power (output) and rate of application (power ramp) can be adjusted to suit your preference, the road conditions, the type of trailer, and the weight of your load. To determine which levels are best for your application, test your towing setup and choose what feels right.



81760 Hayes Engage Electric Brake Controller - Time Based

Product Expert Kathleen M

Is this right for you? Product Expert Kathleen M says:

Yes, if you:

  • Tow your trailer or camper occasionally or only for short trips
  • Prefer to buy American-made products

No, if you:

  • Frequently tow a trailer and would benefit from more troubleshooting features
  • Have a large trailer with more than 3 axles


Universal Wiring Adapter for Hayes Trailer Brake Controllers
part number: HA81789-HBC

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 Satisfaction Score:


Customer Reviews

Hayes Engage Trailer Brake Controller - 1 to 3 Axles - Time Delayed - HA81760

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

Average Customer Rating:  4.7 out of 5 stars   (136 Customer Reviews)

Power output and braking aggressiveness can be easily adjusted with built-in buttons on this time-delayed brake controller. Includes digital display and manual override. Activates brakes with a preset intensity. 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.

by: Geoffrey 06/06/2023

After one year of use the unit works as advertised but does require some getting used to.When first installed it goes to 25% activation in a total of 5 seconds so I turned it down to 15% and like it better loaded or empty..I prefer a proportional controller over timed but due to shortages at the time of purchase this one has filled the job well..Good price and easy install so will see how long it lasts...



by: Richard10/01/2023

25 minutes after placing my online order with etrailer I got a phone call from a representative, ensuring that all of my order was correct was in stock and was being packaged for shipment. I had all of the parts that I ordered three days later, and a verification email that it was delivered. etrailer Runs their business. The way every business should be run. They take care of their customers from beginning to end and today, one year after the purchase. I got an email from them to find out how things were going. Six stars.



by: Nick 04/10/2024

Easy install and works great. I get all my trailering items from etrailer and have never had an issue.



by: Susan04/20/2017

Shipment was prompt and I received exactly what I ordered. Super easy to install in my 2005 Dodge Ram 2500 and im a girl. :)



by: Benjamin 08/22/2023

High quality wire harness. I had to order parts from VW to make a pigtail to connect to the factory harness. All this and the part numbers were supplied with the instructions through etrailer.



by: 08/12/2023

Wiring is NOT conventional..
None of
the harness wires matched up to the flat 4 wiring.
Red was yellow green was brown etc.
And wiring or color ceding was included with the 7 pin harness



by: Tracy 03/31/2024

Exactly what I ordered, helped keep the wiring under the dash organized, delivery of product prompt, all good!!



by: Timothy N.06/12/2019

Nissan Titan pulling a fully loaded 14x7 Cargo Mate Blazer enclosed trailer. The unit was pretty easy to install. etrailer included the proper wiring harness for my Titan. It is not difficult to find the proper brake setting for the load size and not hard to tweak on the fly. This unit worked like a charm while hauling this large load about 1000 miles. So far it has been worth every penny and I got it at a great price!



by: James11/07/2018

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.

Etrailer Expert

Heather A.

11/8/2018

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 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 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 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.



by: Erin 02/13/2024

Great. Easy



by: Troy J07/09/2020

Easy to install as I also ordered the wire adapter kit for my truck. Installation was quick and the unit works as I expected. Good investment for safety. Between the phone help with the ordering of the wire adapter kit and You Tube, it took me longer to watch the videos than it actually took to install it.



by: John 09/16/2022

Good product, easy fitment into factory Ford storage cubby. Small hole in back of cubby made to allow wire harness to pass through.



by: Clayton R.02/09/2015

Hayes trailer brake controller, custom wiring adapter, power cord adapter, andersen camp leveler, trailer leveler. All of these items were delivered in a timely manner and as advertized. Will probably order other items in the future.



by: Jerry M06/30/2016

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.



by: Brian 10/23/2022

The website was easy to work with. When I needed help I was able to reach someone immediately and they couldn’t be more helpful. The items arrived earlier than expected. Installation was straight forward and works like it should. I would recommend using etrailer for all your towing and trailer needs.



by: James06/15/2019

I have not had a chance to use the brake controller yet. I did get it installed today. The installation was easy.
The only thing that I might say is that the set up information was not very clear. It seems like there should be a notation somewhere in the set up about how long the lights are going to flash when there is an OC readout on the unit or how to stop the flashing. Maybe I missed something in the instructions.



by: Billy J08/12/2022

this is the best for the money you can buy,I deleted one star because the info on color codes as relates to my 2022 gmc makes it difficult to match color codes with the truck. neither kelsey or gm are great at this identification, particuly in terms of battery/ grounds/ signal /trailer brakes/ etc



by: Richard10/01/2023

Works perfectly! Great service.



by: Joseph07/16/2019

I purchased this item, didn’t read enough to know I needed an adaptor to fit my Chevy Silverado. Cut the wires and spliced them into my Chevy pigtail provided. Thought the item was not working. Called in and was told someone would call me back the next day with instructions. As told, a representative call me and advised me that Chevy has a different color code. After a quick change everything was functioning as hoped thank you e trailer



by: Tevis Laspa06/21/2017

This was a replacement purchase. The original failed at 8 years old. The original started flashing the brake lights every 5 seconds while turned off and parked. Every thing fit back in the original spot. I have not tried the function with a trailer on.



by: Bob P.04/10/2016

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.



by: Mark08/27/2020

It’s easy to adjust to get the brake controls. I have a 26 foot filth wheel camper and it makes it easy to stop in the event of emergency.



by: Nicholas09/22/2020

It took a while to figure out which wire to tap into for the brake signal, but we eventually figured it out. It takes some awkward body positioning to locate the wires above the brake pedal.



by: Kenn07/13/2018

works very well with my 28 ft trailer....easy to install...fit nice in the cuby hole ...with a little mod.... on the lower left side of my dash......looks factory



by: Quench03/03/2020

Makes installing trailer brake controller super simple. Great product.


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Ask the Experts about this Trailer Brake Controller
Do you have a question about this Trailer Brake Controller?


  • Installing A Brake Controller In A 2019 Ford Ranger
  • Your answer depends on what connector you have. If the Ranger has a factory-installed 7-way it should have a standard brake controller connection port above and to the left of your left knee when seated; this will be near the kick panel. If the truck instead has a factory 4-pole harness, under the dash there will be three blunt-cut wires, blue, yellow with red tracer and white with purple tracer each for the controller output, the 12V power input and the brake light switch wire. These
    view full answer...

  • Wiring Needed To Install Hayes Engage 81760 Trailer Brake Controller on 2023 Ram 1500
  • You will need the Curt Custom Wiring Adapter # C51458 for your 2023 Ram 1500. This will allow you to connect your Hayes Engage Trailer Brake Controller # HA81760 to the factory connector under the dash.
    view full answer...

  • Will Hayes Engage Trailer Brake Controller HA81760 Work WIth Gen 5 HydraStar EOH Actuator HBA-10?
  • The Hayes Engage Trailer Brake Controller - 1 to 3 Axles - Time Delayed # HA81760 you were looking at will work perfectly with your HydraStar Electric Over Hydraulic Brake Actuator # HBA-10. This controller will still work even though your # HBA-10 is a Gen 5 and not the newer Gen 6. I included videos for both of the products mentioned for you to take a look at.
    view full answer...

  • 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
    view full answer...

  • Troubleshooting CP Code on Hayes Engage Trailer Brake Controller
  • I reached out to my tech contact at Hayes to assist. The CP code on your Hayes Engage # HA81760 is not outlined in your owners manual because it is a calibration setting that is only common to see at the factory. He recommends disconnecting the controller completely and letting it sit for about 10 minutes so it completely discharges and then reconnecting it to see if it will re-calibrate and work properly. If that does not solve the issue, he recommends having it replaced. If you
    view full answer...

  • Brake Controller Install Harness Recommendation for a Winnebago Adventurer 1998 35 foot
  • The correct brake controller install harness for the Hayes Engage Trailer Brake Controller # HA81760 that you referenced that would connect it to your 1998 Winnebago on a Ford F53 Chassis would be the Custom Wiring Adapter for Hayes Brake Controllers # HA81783-HBC. The correct port will be under your dash. There might be two similar looking connectors so if you find one and it doesn't work keep looking for the other one.
    view full answer...

  • Parts Needed To Install a Hayes Engage Trailer Brake Controller On a 2020 Chevy Express Van
  • To install the Hayes Engage Trailer Brake Controller # HA81760 on your 2020 Chevrolet Express Van you will need the Wiring Adapter # HA81789-HBC. If your van included the 7-way wiring you will need to check for the wiring taped and tucked under the driver side floor mat up towards the firewall. If you can not find the wiring here you may also have the blue output brake wire already ran from the back to the front. It is located under the dash near the emergency brake pedal. If your Express
    view full answer...

  • Troubleshooting OC Error Code on Hayes Engage Trailer Brake Controller HA81760
  • With the Hayes Engage Trailer Brake Controller # HA81760 the code OC indicates that the controller does not sense an electrical connection to the trailer brakes, or that the trailer has electric-over-hydraulic brakes which do not work with this unit. Since you also have an issue with your tail lights staying on the problem is almost surely corrosion inside the trailer connectors. Corrosion can build up inside a vehicle's socket and inside a trailer's plug and sometimes it is hard
    view full answer...

  • What Does a CL or cl Code Mean on a Brake Controller
  • I did some research and found that on some brake controllers, the "cl" code stands for Current Limit. This indicates that the brake controller has sensed a power requirement greater than its recommended output. This could result from an intermittent short to ground, a faulty brake magnet, or too many brakes connected to the controller. Some brake controllers like the Hayes Engage, # HA81760, are designed for 2 - 6 brakes (up to 3 axles). But others like the Hayes Synchronizer, # HA81725
    view full answer...

  • 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 # C55319. I have linked an installation video and article to help you with
    view full answer...

  • Troubleshooting Hayes Engage Trailer Brake Controller Displaying Code CL
  • My technical contact at Hayes said their Engage Brake Controller # HA81760, the item you referenced in your question, could display the error code CL (current limit) if the trailer's brakes are trying to draw more current than the controller is intended to deliver. This controller is designed to power up to 6 brakes (2 each on three axles). If you are not exceeding the number of brakes that can be connected then chances are that there is a short in the brake circuit that is allowing
    view full answer...

  • What Does P Mean On Hayes Engage Trailer Brake Controller
  • I checked the owner's manual for the Hayes Engage Trailer Brake Controller part # HA81760 and found this out for you about the "P" display. The controller is factory pre-set to display mode P (% of maximum power) • During braking conditions - the number displayed indicates the % of power being applied to the trailer brakes. • It is recommended that display mode P (or PH for a hydraulic actuator) be used while operating the vehicle.
    view full answer...

  • Wiring Harness For Installing a Hayes Engage Trailer Brake Controller On 2012 Cadillac Escalade EXT
  • To install the Hayes Engage Trailer Brake Controller # HA81760 on your 2012 Cadillac Escalade EXT you will need the Universal Wiring Adapter # HA81789-HBC. The wires for the installation are bundled under the dash as there is not a factory connector like some other vehicles. I have linked below an installation video for a Tekonsha Prodigy P3 Trailer Brake Controller # 90195 on a 2009 Escalade as it will show you the location of the wiring. The video also shows you the wiring under the hood
    view full answer...

  • How Does Hayes Brake Controller Wire to a 2007 GMC Yukon XL
  • Your 2007 GMC Yukon XL has 4 wires under the dash that are to be used for wiring up a brake controller. The harness you have would be for newer GM SUVs and trucks. Your Hayes controller would need to wire to the wires under the dash using the attached link as a guide. I also attached a chart that shows how each of the wires on your vehicle would wire to the controller.
    view full answer...

  • Troubleshooting Hayes Engage Brake Controller Not Turning Off and Apply Brakes By Itself
  • All brake controllers including the Hayes Engage # HA81760 you have installed will stay turned on, but the LED light for the screen is the only thing being powered and it times out after around 15 minutes so it should not be able to drain your battery. I'd first double check that this is your actual cause of a drain by having a load test run on your electrical system. If the controller is truely applying the brakes when you're not pressing the brake pedal then something is wrong with
    view full answer...

  • Parts Needed for 2016 VW Tiguan to Add Hayes Brake Controller
  • Since you already have the etrailer Trailer Hitch Receiver # e98906 and T-One Vehicle Wiring Harness # 118675 for your 2016 VW Tiguan, the only other thing you will need to add a brake controller is the Universal Installation Kit for Trailer Brake Controller # ETBC7. That will give you the wiring and 7-way you need to add the Hayes Engage Trailer Brake Controller # HA81760. If you are just looking for a simple brake controller for occasional use, the Engage is a fine option for your
    view full answer...

  • SC on Hayes Engage Brake Controller
  • Thank you for your purchase from etrailer of the Hayes Engage Trailer Brake Controller # HA81760. I looked at the instructions (linked below) and the SC means "short circuit" which "indicates a direct short to ground in the blue wire (output) circuit." So you'll want to take a look at the blue brake wire and see if there is damage there. It could also mean your trailer or Dakota's 7-way is damage or corroded which often prevents signals from getting through, and if so you could replace
    view full answer...

  • Troubleshooting Hayes Engage Brake Controller Showing BF Error Code
  • According to the operating instructions (I'll email you a copy) the bF error code indicates that there's a short somewhere in the brake output circuit, which is the blue wire that exits the rear of the controller and delivers the voltage to the trailer brakes through the trailer connector. Several things might be causing this. The first thing you will want to do is sever the blue wire from a few inches behind the brake controller. Leave enough wire so you can reconnect it later. Then
    view full answer...

  • 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
    view full answer...

  • Brake Controller Recommendation for 2003 Winnebago Adventurer on Ford F-53 Chassis
  • Brake controllers are not vehicle-specific, so you can install whichever one has the features you want in the price range you prefer. Among the best options I can suggest is the Tekonsha Prodigy P3, part # 90195. This unit consistently sells very well because it is easy to set-up, straightforward in operation and has been proven to be exceptionally reliable. Have a look at our customers' ratings to see what purchasers say about it. The base vehicle that the Winnebago Adventurer is built
    view full answer...

  • Harness Needed To Install Hayes Trailer Brake Controller On 2020 Chevy Silverado 1500
  • In order to install the Hayes Genesis Trailer Brake Controller on a 2020 Chevrolet Silverado 1500 you will need the Universal Wiring Adapter for Hayes Trailer Brake Controllers part # HA81789-HBC. This will wire up to the brake controller pigtail in the glovebox which you can get from the dealer if you don't have.
    view full answer...

  • 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
    view full answer...

  • 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
    view full answer...

  • Is Hayes Engage Brake Controller Compatible With 2003 Toyota Tacoma?
  • Hi, and yes, the Hayes Engage Brake Controller # HA81760 with Wiring Adapter # HA81789-HBC is compatible with your 2003 Toyota Tacoma. To install this brake controller you need a 4-way (if you do not already have one) # 118379 as well as the Universal Installation Kit for Trailer Brake Controller # ETBC7, which will give you a 7- and 4-way trailer connector, circuit breakers and the rest of the hardware needed to install a brake controller.
    view full answer...

  • 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...

  • 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.
    view full answer...

  • Does 2001 and 2009 Jeep Wrangler Use Same Brake Controller Install Harness
  • I found your order notes and it looks like you ordered a now discontinued Hayes brake controller and harness for your 2001 Wrangler. Jeep changed the Wranglers pretty significantly between the 2001 and 2009 models so you would not be able to reuse the Hayes brake controller install harness you have but you can reuse the brake controller. You'd need the new harness part # HA81789-HBC.
    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.
    view full answer...

  • How to Wire a Hayes Energize III Brake Controller in a 2002 Chevy Suburban
  • For brake controllers like your Hayes Energize III item # HA81742B the white wire gets grounded, the black wire runs to a constant 12 volt power source, the red to a wire that only has voltage when brakes are applied typically the brake pedal switch, and the blue to the output circuit of the 7-way connector. Since your Suburban has a different set of colored wires from a previous controller you will need to use a circuit tester like item # PTW2992 to check the functions of the wires you
    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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  • 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 Hayes Energize III+ # HA81742B 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,
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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
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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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  • 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.
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Info for these parts were:

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

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