1. Trailer Brake Controller
  2. Hayes
  3. Electric
  4. Electric over Hydraulic
  5. Time Delayed Controller
  6. Under-Dash Box
Hayes Engage Trailer Brake Controller - 1 to 3 Axles - Time Delayed

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

Item # HA81760
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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
Brake controller engages your trailer brakes with a preset intensity when you apply the brakes in your vehicle. Power output and braking aggressiveness can be easily adjusted with built-in buttons. Includes digital display and manual override. Lowest Prices for the best trailer brake controller from Hayes. Hayes Engage Trailer Brake Controller - 1 to 3 Axles - Time Delayed part number HA81760 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (33)
  • Q & A (31)
  • Photos
  • Why etrailer?

Hayes Trailer Brake Controller - HA81760

  • Electric
  • Electric over Hydraulic
  • Time Delayed Controller
  • Hayes
  • Under-Dash Box
  • Up to 3 Axles
  • Automatic Leveling
  • Dash Mount
  • 360 Degrees
  • Indicator Lights

Brake controller engages your trailer brakes with a preset intensity when you apply the brakes in your vehicle. Power output and braking aggressiveness can be easily adjusted with built-in buttons. Includes digital display and manual override.


  • Brake controller activates trailer brakes with preset intensity
    • Signal is sent to trailer brakes when tow vehicle's brakes are activated
  • Adjustable power output lets you determine the amount of power sent to the trailer's brakes
    • Set to higher output when towing in hilly terrain or with a fully loaded trailer
    • Back off power when towing a lightweight or empty trailer
  • Power ramp time setting lets you adjust the aggressiveness with which the brakes are applied
    • Get full power output faster by choosing a low setting, increasing activation speed
    • Achieve smoother braking by selecting a higher setting, supplying power gradually
  • Easy-to-read LED display communicates brake power output, ramp setting, and error codes
  • Easily accessible adjustment buttons let you change settings
  • Built-in safeguards protect your vehicle and trailer
    • Manual override illuminates brake lights on tow 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
  • Slide-bar manual override
  • Dependable solid-state construction
  • Quick and easy installation
    • Can be mounted at any angle in any plane, and in any direction
    • Mounting bracket and hardware included
    • Plug-in, vehicle-specific brake control adapter (sold separately) can be used for certain applications to reduce installation time
  • Made in the USA


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

Time-Delayed Braking

The Hayes Engage brake controller applies your trailer's brakes when the brake pedal in your tow vehicle is engaged. 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 (ramp time) can be adjusted to suit your preference, the road conditions, type of trailer, and size of the load. To determine the amount of power that is best for your application, you must test out your towing setup and choose what feels best.

A time-delay controller is so named because there is a delay between the time that you initially apply the brakes in your tow vehicle and the time that the controller reaches the set maximum power output. Unlike a proportional brake controller, which activates your trailer's brakes based on the deceleration of your tow vehicle, the Engage sends power out in the same way, with the same user-set delay, no matter the braking situation. Although this delay always exists, it can be adjusted by changing the ramp time setting. The controller will continue to send out power to the trailer brakes as long as your foot is on the brake pedal, even when your truck and trailer have come to a stop.

Built-In Controls on the Engage

Engage Controls

The diagram above shows the controls and components of the Hayes Engage electric trailer brake controller.

Power Output Control

The power output control lets you set the maximum amount of power that will be applied to your trailer's brakes. Typically, the power output is only readjusted if you switch from a heavy, loaded trailer to a much lighter, empty trailer - or vice versa.

During the initial setup process, use the adjustment buttons on the left front of the Engage controller to adjust the output. 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

Power ramp time is the elapsed time from the point that the brakes are first applied to the point that the set power output reaches its maximum. This setting is responsible for determining the aggressiveness of the braking action.

To adjust the ramp time, press 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. When the desired ramp time is reached, press the plus button to select it.

If you want to reach maximum power output faster, choose a lower number. To get smoother braking action, select a higher number, which will supply power to the trailer brakes more gradually. You can alter this setting to suit your driving preferences or to improve handling based on changing road conditions or varied trailer loads. The digital display will only show the ramp setting as you adjust it. After a few seconds, it will revert back to display mode.

Digital Display

The Engage brake controller features an easy-to-read LED screen that displays the power settings as you adjust them.

While braking, the display shows the amount of power going to the trailer brakes as a percentage of the total power available. You can choose to change this display to voltage or current during trailer set-up or when troubleshooting problems. When the brake pedal is released, the unit will go into standby mode.

The display will also show trouble codes to alert you to any potential problems, such as a short circuit or an open circuit. A code will also appear if the brake controller surpasses its rated power limit.

Slide-Bar Manual Override

The manual slide lever overrides the preset power output and allows the operator to engage the trailer brakes without using the vehicle's brakes. In addition to being a necessary feature, this option helps to control trailer sway by slowing the trailer to put it back solidly behind the tow vehicle.

You can also engage the manual override to help you move a sliding 5th-wheel hitch closer to your truck's tailgate for tight maneuvering during slow speed turns. Just apply the manual override to hold the trailer in place while slowly moving the tow vehicle forward.

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 or position it in any particular direction. As a result, mounting options are limitless, so long as you can still easily access the manual override.

Installation of the Engage requires that you either purchase a custom wiring adapter designed to plug into the controller or that you hardwire the controller directly into your vehicle. To hardwire the Engage, you must remove the plug at the end of the integrated wiring harness.

Installation Accessories

The Hayes vehicle-specific, dual-mated wiring adapter is available for most newer trucks and SUVs with tow packages. One end of the custom adapter plugs into your vehicle's brake controller port, and the other end plugs into the controller - no hardwiring required.

Hayes also offers a universal wiring harness (HA81789-HBC - sold separately) that plugs into the back of any Hayes brake controller. The 4 leads on the universal harness can then be hardwired into your vehicle. By splicing the universal adapter into your wiring instead of directly connecting the brake controller to your wiring, you gain the ability to unplug and remove the controller from your vehicle should the need arise.


  • If a custom brake-control wiring adapter is not available for your vehicle, one of the following will be required:
    • 20-Amp circuit breaker (9506 - sold separately) for 2-brake applications
    • 30-Amp circuit breaker (38630 - sold separately) for 4- to 6-brake applications.
  • If you're hardwiring the controller, it is also suggested that you install an in-line fuse between the controller and the stop light switch (required on 1999 and newer Fords).

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.

81760 Hayes Engage Electric Brake Controller - Time Based

Customer Reviews

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

Average Customer Rating:  4.8 out of 5 stars   (33 Customer Reviews)

Brake controller engages your trailer brakes with a preset intensity when you apply the brakes in your vehicle. Power output and braking aggressiveness can be easily adjusted with built-in buttons. Includes digital display and manual override.

- HA81760

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!

I have not pulled my trailer since I helped some friends move back in February, but the harness was still working well at the time.
Timothy N - 07/15/2020

- HA81760

Very simple install Happy with the ord er

Spot on. Works great.
Andrew - 07/26/2021

- HA81760

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

- HA81760

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.

- HA81760

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.

- HA81760

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.

- HA81760

I love it, I have one in both of my trucks. It works on single & double axle brakes., you can adjust the delay & see what you set it on and don't have to guess what it is on. Very easy to adjust brakes for your loads, there again you can also see what you have it set on also. My neighbor used one of my trucks to haul a load hay & loved it . Asked me to order him one for his truck.

- HA81760

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.

- HA81760

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.

- HA81760

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

- HA81760

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

- HA81760

This controller was so easy, mounting it under the dash, put in the 40 amp fuse. And the controller was ready to go. Install time was less than a hour. That included going to the parts place and getting a fuse. I am very happy

- HA81760


- HA81760

I ordered this brake controller to replace the one I've had for 8 yrs and on 3 different trucks. There service is second to none. Thanks, Rodney

- HA81760

Directions were perfect. Never wired a truck for trailer control. Got it right the first time.

- HA81760

it came on time and was what I order. I will install it this spring

- HA81760

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

- HA81760


- HA81760

Excellent brake controller, simple and easy to operate.

- HA81760

Easy to instal, the display is nice and bright, works great towing my 20 foot trailer.

- HA81760

Etrailer is never a disappointment. easy to order and always fast delivery.

- HA81760

Product was what I ordered and installed easily and worked properly. Received order when promised

- HA81760

It work just great on my truck.

- HA81760

Installed easily, haven’t towed with brakes yet.

- HA81760

Haven't hooked up yet, but came as des cribed.

Show More Reviews

Ask the Experts about this Hayes Trailer Brake Controller

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    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...
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  • 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...
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    Image 1 for
  • 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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  • 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...
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  • 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...
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  • Hayes Engage Trailer Brake Controller Shows bF Error Code
    The error codes shown on the Hayes Engage Trailer Brake Controller part # HA81760 can be easily deciphered by looking at the owner's manual. Per the manual, "bF" indicates the blue wire is connected to wrong place, short in wiring / connector, faulty or disconnected breakaway switch. The blue wire is the brake output wire that runs from the brake controller to the 7-way and then from the 7-way to the braking assemblies. Therefore, I recommend tracing this wire to ensure there are no shorts...
    view full answer...
  • 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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  • Troubleshooting Brake Controller that Activates Truck Brake Lights Randomly
    The problem is either the wiring of your brake controller or the brake controller itself has internal problems. What it sounds like is happening is that the stoplight switch of your brake controller (usually red) is backfeeding onto the brake light circuit of your 1997 Dodge Ram which is activating the brake lights of your truck. This would indicate that the controller has shorted out and would need to be replaced. I attached an FAQ on brake controller installs for you to check out as...
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  • 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 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...
  • 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...
  • How to Connect a Hayes Engage Trailer Brake Controller # HA81760 in a 2008 Toyota Tundra
    To install the Hayes Engage Trailer Brake Controller # HA81760 on your 2008 Toyota Tundra with a factory 7-way you wouldn't need to do any hardwiring. All you would need to do is plug in the # HA81785-HBC harness to your factory brake controller install port. The harness is located underneath the dash, to the left of the steering column, taped to another harness near the emergency brake pedal. The green wires that you have found on the brake controller port would not be needed to...
    view full answer...
  • How to Install a Hayes Brake Controller on a 2000 Ford F-250
    In order to install a Hayes brake controller like the Hayes Engage Trailer Brake Controller part # HA81760 on your 2000 Ford F-250 you will want to use the Custom Wiring Adapter part # HA81783-HBC which is a direct plug and play fit. I have attached a video which shows where the factory port is located for you. I took a look at you order and can confirm that the Ford Replacement OEM Tow Package Wiring Harness part # 118243 is correct for you.
    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.
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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 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.
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    Image 1 for
  • 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.
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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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  • Is the Brake Controller in My Truck Causing my Rear Brakes to Not Function Properly
    The brake controller you have installed in your 2001 GMC Sierra 1500 would not affect the performance of the rear brakes of your truck. The functioning of the controller is far removed from how your brakes function. Removing the brake controller will not change or affect the problem you are experiencing. I would recommend you take your truck back to the shop that you had your brakes done at and have them look at it again. Or, if you don't trust them I would recommend you find a more...
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    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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    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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  • Trailer Brake Controller that is Compatible with Electric Over Hydraulic Braking Systems
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    The Pilot 2-6 Brake Electronic Brake Controller - Time Delayed # 80550 has not been tested by the manufacturer to work with Electric Over Hydraulic brakes. Most time delayed controllers are not a fit for the EOH systems. The Curt Venturer # C51110 and the Hayes Engage # HA81760 are the only two the manufacturer states will work with EOH, but I honestly wouldn't recommend either for that use. I recommend the Tekonsha Prodigy P2 # 90885 or P3 # 90195 for the best operation with an...
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  • 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...
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  • Time Delayed Brake Controller Troubleshooting on a 2008 Chevrolet Silverado
    The first thing you will want to do is use a circuit tester like the Circuit Tester part # 40376 in order to test the stop light switch wire on your vehicle's brake pedal while the brake pedal is depressed. You will need to be spliced into the wire that only has power while the brake pedal is depressed. If the wire is receiving power then the brake controller is faulty and will need to be replaced. If the wire is not receiving power then you will first want to check the stop light switch...
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  • Routing the Red Wire from Custom Wiring Adapter # HA81797-HBC to 3rd Brake Light on 2014 Ram 1500
    I spoke with my contact at Hayes about you installing the Hayes Engage # HA81760 and Custom Wiring Adapter # HA81797-HBC on your 2014 Ram 1500 Sport. Although there isn't really a specific or recommended route, my contact did say that a lot of people he talked to like to run it along the door frame. To do this you will simply want to push the red wire in to the molding along the bottom of your door frame. This should be a great way to route the wiring around any electronics and give...
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Lindsey S
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