Hayes Energize III+ Trailer Brake Controller - 1 to 3 Axles - Proportional
Custom Wiring Adapter for Hayes Brake Controllers - Dual Plug
Part Numbers: HA81742B,HA81782-HBC
Retail:$162.09
Our Price: $110.90
You Save: $51.19
Hayes Energize III+ Trailer Brake Controller - 1 to 3 Axles - Proportional
part number: HA81742B
This proportional brake controller keeps towing simple with a straightforward design and user-friendly controls. Includes an LED indicator and a slide-bar manual override. Adhesive backing gives you the option of drill-free mounting.
Features:
- Brake controller activates your trailer brakes in proportion to your vehicle's braking action
- Automatically adjusts trailer's braking based on deceleration of tow vehicle
- Simple controls keep your settings within easy reach
- Gain setting lets you adjust the amount of power sent to the trailer's brakes
- Slide-bar manual override allows you to control trailer sway or stop in emergencies
- Deceleration sensor lever lets you adjust initial braking power and aggressiveness for smooth, safe braking
- Red LED indicator lights up when brakes are engaged
- Quick, simple installation with included bracket and hardware
- Drill-free installation option with included adhesive tape
- Optional universal wiring adapter (HA81789-HBC) sold separately for a plug-and-play installation
- Plug-in, vehicle-specific brake control adapter (sold separately) can be used to reduce installation time on certain vehicles
- -35-Degree to 90-degree mounting range - must be horizontally level
- Made in the USA
Specs:
- Application: trailers with up to 3 axles (6 brake assemblies)
- Compatible with electric brakes only
- Dimensions: 5-3/8" long x 3-1/4" wide x 1-3/8" tall
- Mounting angle: -35 degrees to 90 degrees vertically
- 5-Year limited warranty
Gain Setting for Braking Power
You can adjust the gain setting (also known as braking output) on the Hayes Energize III+ using the thumbwheel on the front of the module. This will set the maximum amount of power that will be applied to your trailer's brakes. You want to go as high as you can without the trailer brakes locking up. Typically, the gain is only readjusted when you experience changing road conditions or if you switch over from a heavy, loaded trailer to a much lighter, empty trailer, or vice versa. To get more power to your brakes, turn the wheel up. To get less power to your brakes, turn the wheel down.
The red LED indicator on the front of the module will light up when the brake controller is activated. This way you can keep your eye on your braking and be sure that it's working.
Sensitivity Adjustment with Deceleration Sensor Lever
Once you have the overall power set, you can fine-tune the power output by adjusting the sensitivity of the internal sensor. This controls the aggressiveness of your trailer's braking, meaning how quickly the brakes reach the maximum braking level. You can adjust this when you're towing heavy loads and you need more umph to bring your trailer to a stop. Your tow vehicle doesn't need that much power to brake in time, but your heavy trailer does. Boost gets the braking power to your trailer brakes faster and with more intensity so that it doesn't push your tow vehicle forward. To increase the sensitivity for towing heavier loads, move the lever away from you. For a lighter load, move the lever toward you.
Slide-Bar Manual Override
The Hayes Energize III+ comes with a built-in, easy-to-reach slide-bar manual override, great for stopping sway or controlling your trailer's momentum in emergencies. To engage the manual override, just push the slide-bar to the left, toward the center of the controller. This will 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.
Quick, Simple Installation
The Hayes Energize III+ is easy to mount wherever you want it. Simply use the bolts or the double-sided tape to secure the included mounting bracket to your dash, and then install the controller in the bracket.
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.
Because the Hayes Energize III+ operates with an internal inertia sensor, it must be mounted between -35 degrees and 90 degrees vertically. The brake controller also needs to be horizontally level and parallel with the direction of travel to function properly.
Installation Accessories
See 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: One of the following will be required to ensure proper installation:
- 20-Amp circuit breaker (9506P - sold separately) for 2- to 4-brake applications
- 30-Amp circuit breaker (38630 - sold separately) for 6- to 8-brake applications
Proportional Braking
The Hayes Energize III+ brake controller comes equipped with proportional braking to give you the best towing experience. Proportional braking means that your trailer brakes mimic your tow vehicle's brakes. If you slam on the brakes in your vehicle, your trailer brakes will activate with the same intensity; if you brake lightly, your trailer brakes lightly too. The trailer's braking is in proportion to your vehicle's braking. This saves wear and tear on the tires and the brakes on both your vehicle and trailer.
The Energize III+ uses a pendulum system to sense how your vehicle is braking so it can send the right amount of braking power to your trailer. It detects the inertia of your tow vehicle and activates the trailer's brakes to slow at the same rate. The result is uniform braking across your towing setup. No push-pull action - just smooth, proportional braking every time.
81742B Hayes-Lemmerz Energize III Plus Brake Controller - 1 to 3 Axles - Proportional
Replaces 81741B and 81745
Item # HA81742B
Custom Wiring Adapter for Hayes Brake Controllers - Dual Plug
part number: HA81782-HBC
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.
Features:
- 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
Customer Satisfaction Score:
95% were satisfied with this product
5% of customers were not satisfied
- Wrong item was ordered
- Product did not meet expectations
- Did not arrive in time
Customer Reviews
Hayes Energize III+ Trailer Brake Controller - 1 to 3 Axles - Proportional - HA81742B
Custom Wiring Adapter for Hayes Brake Controllers - Dual Plug - HA81782-HBC
Average Customer Rating: 4.7 out of 5 stars (146 Customer Reviews)
This proportional brake controller keeps towing simple with a straightforward design and user-friendly controls. Includes an LED indicator and a slide-bar manual override. Adhesive backing gives you the option of drill-free mounting. 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.by: Terry 11/10/2022
This controller was truly "plug&play". Installation was 30 min. Works perfectly. E-trailer has always been my go-to for all my truck and camper needs!
by: Danny C05/27/2024
I love this trailer brake controller. It works really well and does exactly what it is advertised to do. Definitely recommend it!
by: Robert Barker04/23/2024
This is my second order with etrailer. Both experiences with your company have been very positive. The knowledge and friendliness -along with following up on orders and satisfaction have been much appreciated. Brittany, the customer representative, is a huge asset to etrailer.
by: Matthew04/28/2024
I opened the box and there was rattling around in controller. It was the f
Gsi. Dial!!! I Want my money back
by: Jeff05/05/2023
The controller is not at all smooth in applying brakes. very abrupt in braking, have tried adjustments and mounting with no improvement. Would not recommend.
by: 09/25/2023
Controller installed easily. Unit applies brakes ok. My big concern is the
lack of the voltage setting being displayed. This is first controller I have
worked with. Video says good back unit. Ok that it is. But if I had known what I know now, would have purchased unit with digital voltage setting. Setting wheel to same spot each use is causing me to go through setting process each time. There is a difference with brakes with unloaded and loaded trailer.
by: Brent09/07/2023
It continues to do its job flawlessly. Have not had a single concern with it while towing. It allows for manual application of braking "pressure", but except for testing it at low speeds to verify operation, I have not had to touch it at all while highway towing, as it achieves smooth, even stopping power. Still very pleased with the purchase!
by: Ryan 04/08/2024
Super fast delivery and easy plug and play. Would highly recommend
by: Luke04/12/2024
Works like it should. Easy install. Other models will offer more features, but for a part time camper puller like myself, it does the job
by: Mike04/17/2024
Works perfectly. 1 year and counting.
by: Marshall02/25/2023
Easy to install and great customer service. One problem: writing on instructions was so small I had to use magnifying glass to read it and my vision is 20/20. This needs to be corrected by manufacturer. Instead of tiny writing in several non English languages, print it so the vast majority of customers can actually read it. This would probably eliminat e many customers calling etrailer for help in installation.
by: Charles11/11/2022
Remember the adage, "you get what you pay for"? Certainly applies here...I will never know if this unit was faulty when I received, or if it simply is poor quality. But the "gain" function on it does nothing, and therefore I can't dial in the sensitivity that is needed. Again, I don't know when/how it became inoperable, but I just ordered it's replacement. Am hopeful for a better experience...
by: Dale10/25/2023
Easy to install. Clear instructions.,Works great.
by: Marc C11/06/2023
Appreciate the installation videos
by: Jodie03/01/2024
work's great, thanks
by: Ken 03/14/2024
Great service good people to deal with
by: Ernest 11/04/2022
This brake controller has worked great no problems at all I would recommend it to anyone using this style of brake controller.
by: Richard 10/23/2019
Got tip off Utube for the wiring harness adapter for a 2019 Ram. Installation was plug and play. We have a 26 ft camper we will be towing. Very easy install.
by: Curtis 08/08/2023
The plug and play wire harness that I ordered for my pickup should have been 5-6 inches longer. Otherwise everything was fine.
by: Liam11/05/2022
Nicole was outstanding in knowledge and patience with me. She helped me get through my mistaken order and get me the right brake controller and adaptor harness for my truck. I installed it in less than and hour and it is working great. She also made the return of the controller and harness a breeze.
by: William 02/26/2023
Perfect, exactly what I needed great price, fast delivery, easy installation. It only took about 30 minutes total. The hardest part was for an old man to get down that low in the floor well. Thanks again etrailer.
by: Chris 09/07/2021
Best of the four brake controllers I've had so far in my truck. Easy to adjust on the fly if brakes are too strong or weak. Manual override felt solid unlike some controllers out there. The instructions could've been written a little clearer though. 4 prong square plug also fits Curt controllers if swapping. Overall nice controller for the money, should've bought this one first and saved the cash
by: James08/04/2018
Very pleased with the Hayes controller and the installation videos and information available at etrailer. My installation was hardwired due to an earlier install which removed a connector, so etrailer support was very beneficial plus their price was very competitive...a winning combination.
by: Daniel 09/15/2023
Easy installation. Thanks
25
146
Show More Reviews Ask the Experts about this Trailer Brake Controller
Do you have a question about this Trailer Brake Controller?
- How Does Hayes Brake Controller install in 2012 Volvo XC60
- You will need to start with a 4-way (if you do not have one) installed on your 2012 Volvo XC60 to install a brake controller. For that you would want the # 118739 which I attached an install video for.
From there you would need to convert the 4-way to a 7-way so that you can install the Hayes brake controller # HA81742B. For that you will want the Brake Controller Install Kit and 7-Way Adapter part # ETBC7. I attached installation instructions and an install video for this product as
view full answer... - Brake Controller Wiring Harness Recommended for 2004 Ford Expedition
- We do indeed have a harness that would work for you.
The actual plug and play harness you need will depend on who manufactured the brake controller you have. I'll run through some of the major players and the part number for the compatible harness:
• Tekonsha, Reese or Draw-Tite, use # 3035-P
• Curt, use # C51322
• Hayes, use # HA81783-HBC
• Redarc, use # RED87FR
• Hopkins, use # HM47715
If your controller is from a different manufacturer or just has blunt-ended wires exiting
view full answer... - Harness Needed To Install Hayes Trailer Brake Controller On a 2020 Toyota Sequoia
- In order to install the Hayes-Lemmerz Energize III+ Electric Trailer Brake Controller part # HA81742B on a 2020 Toyota Sequoia you can use the Custom Wiring Adapter for Hayes Brake Controllers part # HA81785-HBC so long as you have the factory tow package. If you don't have the factory tow package you will need to hardwire the unit, let me know if this is the case.
view full answer... - Is There a Plug and Play Harness for Hayes Energize III Brake Controller on 2016 MB Sprinter 3500
- I have a solution for you, and there are some brake controllers available that can be used with a plug and play wiring harness to ease installation; however the Hayes Energize III # HA81742B is not one of those controllers and it would need to be hard wired into the vehicle no matter what. If you want to go that route you can use the # HA81789-HBC to plug into the Energize III and gives you the pigtail wiring needed to hardwire.
With that said, instead of the Hayes Energize III I recommend
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... - Will Hayes Energize III Work on Tandem Axle Trailer with One Brake Axle
- The Hayes Energize III brake controller part # HA81742B that you referenced will work great on a tandem axle trailer that has one brake axle. That means your trailer has two assemblies which is perfect with this controller.
view full answer... - Will Curt C51180 Echo Brake Controller Override Existing Aftermarket Brake Controller
- That's an excellent question!
The Curt # C51180 Echo wireless trailer brake controller will work with your aftermarket brake controller installed.
The Echo gets all its inputs from the 7-way trailer connector, bot the brake lamp circuit and the 12V power for the trailer brakes, so once you plug it in it'll completely bypass any existing aftermarket brake controller. The existing brake controller won't even 'know' there's a trailer connected.
As long as the 12V feed to the 7-way
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... - Does The Red Indicator LED On Hayes Energize III Activate When The Trailer is Disconnected?
- Yes, the red indicator light will illuminate on your Hayes-Lemmerz Energize III+ Electric Trailer Brake Controller # HA81742B when either the brake pedal is pressed or when using the manual override. This will happen both when disconnected from a trailer or connected.
view full answer... - Brake Controller Installation on 1999 Ford F550 and 2000 Chevy C/K Cab and Chassis Models
- In addition to the Hayes Energize III # HA81742B brake controllers, you'll need a # HA81783-HBC wiring harness for the 1999 Ford F550.
The 2000 Chevy 1 ton and cab/chassis models weren't prewired for a brake controller until the 2001 model year, so you'd need to hardwire in the controller for that vehicle. You'll also need a # HA81789-HBC universal pigtail, unless you want to cut off the black connector on the controller. I'd recommend using the pigtail, as it would allow you to easily
view full answer... - Will The Hayes Energize III+ Fit On a 1995 Chevrolet C3500 Pickup?
- Yes, you are able to use the Hayes Energize III+ Trailer Brake Controller # HA81742B on your 1995 Chevrolet C3500 pickup. You will need the Pigtail # HA81789-HBC to connect to any wiring you may already have to go to a 7-way. If you do not already have a 7-Way the Kit # ETBC7 will connect to a 4-Way # C55315.
view full answer... - Where do Wires of Hayes Energize III Brake Controller Need to Run To
- For brake controllers like your Hayes Lemmerz Energize III part # 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 (normally on the brake pedal switch), and the blue to the output circuit of the 7-way connector.
view full answer... - Troubleshooting Energizer III Brake Controller with no Power Output on 2009 Chevrolet Silverado
- Yes, the signal for the trailer brakes comes from the stop light lead. The red wire on the controller is meant to be connected to the stop light circuit which is the light blue or orange wire on GM vehicles with the factory tow package. This wire will then send a signal to the brake controller when the brake pedal is pressed which in turn sends power to the trailer.
I would first start off by testing the light blue stop light wire on your 2009 Chevrolet Silverado. You will want to use
view full answer... - Troubleshooting Hayes Trailer Brake Controller LED Flashing While Driving With Camper
- The LED light on your Hayes Trailer Brake Controller comes on when it senses power from the brake light switch or the controller is manually activated.
Your brake light switch on your 2015 Nissan Pathfinder may be faulty. Since it is just blinking it does not see the power long enough to activate the trailer brakes.
Since you have a 2nd Hayes controller on your other vehicle I would recommend swapping them to see if the same issue occurs with the other controller. This will tell
view full answer... - Hayes Blackbird Has Constant Power On Blue Wire Without Brake Pedal or Override Activated
- Correct, if you have constant power on the blue brake output wire then your brake controller is faulty and will need to be replaced. The Hayes Blackbird Trailer Brake Controller part HA81726 is a timed delayed brake controller so this would be a great time to upgrade to a proportional brake controller which will be much smoother and will have a faster response time. The Hayes-Lemmerz Energize III part # HA81742B would be a good option for this and it uses the same plug and mount you have
view full answer... - Red Light on Hayes Brake Controller Stays on and Drains Tow Vehicle Battery
- I am not sure which Hayes brake controller that you have, but in reviewing the installation instructions for the Hayes-Lemmerz Energize III+ Electric Trailer Brake Controller # HA81742B I found that there is a section that goes over if the "Controller red indicator on all the time."
The solutions they offer call for testing the Red wire and the Blue wire on the brake controller with a circuit tester like part # PTW2992. The Red wire connects to your Stop Light Switch and only receives
view full answer... - Does Install of Brake Controller in a Vehicle Affect Vehicle Brakes
- The brake controller you sent in a picture of will only affect the brakes of a trailer you would be towing. It does not affect the brakes of your vehicle in any way if you were to leave the controller installed.
I attached an FAQ article on brake controllers for you to check out as well.
view full answer... - Tips for Finding Brake Controller Stoplight Circuit Wire in Truck
- All you need for the red wire of your brake controller is a circuit that sees voltage only when the brakes are applied. If you wanted to run a wire to the fuse box to find a wire like you said that would work fine. Some people will also use the third brake light circuit as well.
It almost sounds like you are running the blue wire of the controller to the stop light circuit if the brakes lock up when you tap them. Or your brake controller is just set too aggressively.
I attached a
view full answer... - Trailer Brake Controller Manual Override Not Functioning but Trailer Brakes Work from Brake Pedal
- Since the trailer brakes are working when you press on the brake pedal, it sounds like there could be one of two things going on here. It could be something as simple as the connections inside the controller being dirty or dusty. Give the manual override button a series of pushes and let the button snap back up into place- we just want to try to dislodge anything that might be keeping the button from making a full connection to the internal parts that operate the manual override.
If
view full answer... - What Does The Lever On The Side Of Hayes-Lemmerz Energize III+ Electric Trailer Brake Controller Do?
- The lever on the side of the Hayes-Lemmerz Energize III+ Electric Trailer Brake Controller # HA81742B allows you to adjust the proportioning of the brakes on the trailer. I have linked the instructions below that cover setting this lever to the correct position when installing.
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... - 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 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... - 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... - 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
view full answer...
Info for these parts were:
Edited by:
Lindsey S
Expert Research:
Michael H
Expert Research:
Jameson C
Updated by:
Laura H
Updated by:
Wilson B
Installed by:
Cole B
Written by:
Tammy D
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