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Hayes Brake Controllers

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Hayes Reviews and Installation Videos


Expert Answers about Hayes

  • Recommended Electric Over Hydraulic Trailer Brake Conversion for Dual 10K Axles
  • The Disc Brake Kit # K2R1058D13 by Kodiak is the brake set that you will need to use for your 10,000 lb Dexter Torsion axles. When it comes to hardware, like the brake line, I recommend going with the Kodiak Hydraulic Brake Line Kit # 24TA-BLKIT which will wear better than other traditional brands. These lines are very flexible so the line is easy to maneuver under the trailer. The only downfall is that you cannot cut the line due to how hard and risky it is to do yourself. All you have...
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  • How to Complete Hardwire Installation of Hayes Synchronizer Brake Controller
  • I'd be happy to assist with that. In addition to the # HA81725 Hayes Synchroinizer brake controller, you'll need a universal wiring harness, part # HA81789-HBC and our Brake Controller Installation Kit, part # ETBC7. The kit includes everything necessary to install a brake controller in your vehicle, with the exception of the controller itself and a 4-pole trailer wiring harness for the vehicle. If you click the provided link, you can see some FAQ articles about installing a brake...
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  • Troubleshooting OC Code on a Hayes Genesis Brake Controller
  • You wired up your Hayes Genesis Trailer Brake Controller # HA81790 properly to your 2006 Toyota Tundra. The problem is most likely at the 7-way connector at the rear of your vehicle (if there is one). OC would mean open circuit, which means that the trailer is not connected. The brake controller does not recognize a connection to the trailer. On some brake controllers it will also show OC if you are using a brake controller with an electric over hydraulic braking system on your trailer...
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  • Brake Controller in a Volvo 780 VNL Semi for Towing Trailer with Electric Brakes
  • Since your Volvo 780 semi has air brakes the part # HA100400C that you referenced would work well as it is designed to tap into your air brake system and apply a proportional amount of braking power to your trailer's brakes as it senses coming through your air brake system. If you are looking for the best option this is what I would go with as it's going to give you a way to apply the same amount of pressure as your semi brakes are applying.
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  • Mounting Bracket Installation on Hayes Air Actuated Trailer Brake Controller # HA100400C
  • The U-bracket included with the Hayes Air Actuated Trailer Brake Controller # HA100400C is intended to support the controller from below and attach to the bottom of the dash. It does NOT attach to the controller in the way that typical brake controllers like the Prodigy P2 # 90885 do. The installation process of the Hayes controller includes application of double-sided tape, which is then followed by the installation of the bracket. It may be necessary to slightly adjust the shape...
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  • Is There a Harness for Brake Controller on 2016 Jeep Renegade?
  • All brake controllers on your 2016 Jeep Renegade, including one such as the Hayes # HA81792BB, will need to be hardwired in as there is no compatible harness. Due to the difficulty in locating the stoplight wire it is recommended to get your brake controller professionally installed. The brake controller I strongly recommend is the Prodigy P3 # 90195; it is the most popular model we carry due to its effectiveness and ease of use. It will activate your trailer's brakes immediately in...
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  • Flashing OC Code on Hayes Genesis Trailer Brake Controller When Vehicle is Off
  • A brake controller like your Hayes Genesis # HA81790 displays the "OC" message when there is an open circuit, which simply means that the trailer is not connected or the controller does not recognize a connection to the trailer. Since it is coming on when your vehicle is off, I recommend checking the vehicle and trailer connectors for any dirt or corrosion that could be causing this message to appear. Also, simply sliding the manual override on the brake controller all the way, then...
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  • Availability of a Custom Wiring Adapter for a Brake Controller on a 2017 Ram ProMaster 2500
  • For the 2017 Ram ProMaster 2500 van, the wiring to connect a brake controller will have to be both installed and spliced into existing OEM wiring. There are no custom plug in wiring harness available for this model vehicle. To install a brake controller, like the Tekonsha Prodigy P2 # 90885, a 4-way wiring harness and a 7-way trailer connector will need to be installed. For the 4-way harness I recommend the Tekonsha T-One Vehicle Wiring Harness, # 118618. This harness is designed...
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  • Installing an Electric Trailer Brake Controller in a 2018 Chrysler Pacifica
  • Since you already have a 7-way trailer connector and a brake controller all you should need is the adapter to connect the controller. That's assuming the 7-way is factory installed. If you've installed it yourself, or had it installed aftermarket let me know. If it's a factory 7-way there's going to be a connector under the dash above the steering column not far from where it goes through the firewall. The connector you're looking for probably has a green cover over it. Once you...
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  • Can a RV with Air Brakes Have an Electric Brake Controller Installed
  • That's actually what we recommend the most for people towing trailers with electric brakes that have tow vehicles with air brakes. Installing a P2 part # 90885 will allow you to totally bypass having to interface with the air system and will work very well. Hardwiring a brake controller isn't too difficult. It basically is just a matter of running a few wires. One to the positive post of the battery, one to the ground, one to the trailer connector, and then one to the stoplight circuit. I...
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  • Does Computer have to be Flashed to Install a Brake Controller in a 2016 Ford F-150
  • You will not have to flash the computer on your 2016 Ford F-150 to install the Hayes Genesis brake controller # HA81790. I do recommend using the vehicle specific wiring harness # HA81794-HBC instead of a universal one that you would have to splice into the Ford harness. If you use the vehicle specific harness you can just plug the controller straight into the truck without having an intermediate harness between the 2.
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  • Troubleshooting Cruise Control Not Working After Brake Controller Install
  • Sounds like you connected the red (stoplight switch circuit) wire to the wrong circuit on your truck. When the cruise control on a vehicle starts acting up that is a tell-tale sign that the wrong circuit is being used for the red wire. What you want to do is use a circuit tester like part # PTW2993 to test the wires near the brake pedal to find the circuit that only sees 12 volts when the brakes are applied and none when the brakes are released. Correcting this should take care of both...
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  • Troubleshooting Hayes Genesis Brake Controller That Applies Minimum Braking During Sudden Stops
  • It sounds like your Hayes Genesis Brake Controller # HA81790 is not sensing the deceleration of your truck and trailer so it is not applying more than the minimum braking power when you apply the brakes. During sudden stops you should see the controller the maximum braking power you designate. This typically means that your brake controller is not mounted correctly. Because this controller operates with an internal inertia sensor, it must be mounted between -35 degrees and 90 degrees...
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  • Troubleshooting Trailer Brakes That Intermittently Lock Up With any Brake Pressure
  • Sounds like the problem is on the trailer's wiring as the issue you are having has shown up with two different tow vehicles. The most likely situation you have is that your brake light circuit is shorting out to your brake output circuit which is causing your trailer brakes to apply fully when the brakes are applied. Do you notice the brakes applying or locking up when the blinker is applying as well? If so, that blinker circuit on your trailer wiring is shorting to the brake output...
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  • Installing a Brake Controller in a 2008 Lincoln Mark LT
  • The Hayes Blackbird Trailer Brake Controller - 1 to 4 Axles - Time Delayed # HA81726 is absolutely something you can install yourself and won't look out of place in your 2008 Lincoln Mark LT. If you have a factory 7-way, then you only need to add the custom wiring harness # HA81783-HBC to plug into your factory port beneath the dash. If you have the factory 4-way, then you can use that harness along with the # ETBC7. If you don't have factory wiring, you will need the Universal Wiring...
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  • What Angle Does the Hayes G2 Brake Boss Have to Be Installed at for Proper Function
  • The Hayes G2 Brake Controller part # HA81792BB has to be installed in a specific angle range otherwise the proportional sensors of the controller will not accurately be able to sense braking activity and apply the correct amount of braking power to the trailer. If the controller being totally level and squarely facing the rear of the vehicle it is 0 degrees, then 94 degrees would be slightly past totally vertical and -35 degrees would pretty close to the middle of facing directly at...
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  • Error Code Explanations for the Hayes Genesis Brake Controller part # HA81790
  • I attached a picture that I took from the installation instructions for the Hayes Genesis Brake Controller part # HA81790 that shows what the various codes mean and the possible causes for them.
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  • Troubleshooting OC Error Message on Hayes Blackbird Trailer Brake Controller HA81726
  • When the Hayes Blackbird Time-Delayed brake controller # HA81726 displays the error code OC this means that the controller senses that it has lost its electrical connection to the trailer's brake circuit. This code could be caused by many things: trapped water, dirt or corrosion inside the vehicle socket or trailer plug, or it could be due to a loose physical connection at the 7-way or at the blue wire at the back of the controller. The blue wire carries the output signal from the controller...
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  • Installation Of Hayes Air Actuated Trailer Brake Controller
  • The Hayes Air Actuated Trailer Brake Controller - 1 to 4 Axles - Proportional # HA100400C mounts to the inside of your 2007 Nemar Essex at the dash just like other electric brake controllers will. It needs to be installed on the inside of the vehicle for proper function. It has a slide bar override that needs to be within reach for emergency trailer braking. The wiring connects just the same as an electric brake controller. Blue is trailer brake output, red is stop light swith, white...
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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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  • Will the Hayes Electronic Sway Control System Part # HA81775 Work with Factory Brake Controllers
  • I called my contact at Hayes about the Hayes Sway Master Electronic Sway Control System part # HA81775 and they stated that they do not recommend using the above device on any vehicle with a factory integrated brake controller. Therefore no, the Hayes Sway Master Electronic Sway Control System will not work on your 2015 Ram 2500 with the factory brake controller. In order to use this device on your 2015 Ram 2500 you will need to replace the factory brake controller with an aftermarket...
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  • 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.
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  • What Is Needed to Use the Hayes Sway Master Electronic Sway Control System Part # HA81775
  • As long as your trailer has electric or electric-over-hydraulic brakes and the tow vehicle has a has a fully functioning 7-way then the Hayes Sway Master Electronic Sway Control System part # HA81775 will work well for you. You will not need any sort of progressive braking assembly or kit. If you don't already have a brake controller, I recommend using the Tekonsha Prodigy P2 Trailer Brake Controller part # 90885 which is one of our best selling brake controllers due to its ease of...
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  • How to Install and Remove the Connector on Hayes Universal Wiring Adapter # HA81789-HBC
  • The Hayes Universal Wiring Adapter # HA81789-HBC that you referenced is intended to plug into the back of a compatible Hayes brake controller such as their Genesis # HA81790 and then hard-wire to your vehicle using the 4 wire leads. The plug portion on the adapter is not intended to mate with any connectors on your 2007 Dodge Ram 2500 Pickup. There are other brands of brake controllers that do use adapters with plugs on both ends, one for the controller and one for the vehicle, such...
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  • 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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  • Where Does Stoplight Circuit Get Sourced for Install of Hayes Brake Controller HA100400C
  • Actually when you wire in the Hayes Brake Controller part # HA100400C you use the vehicle's wiring and not the trailer wiring. You would need to find a stop light circuit for the red wire of the controller. Typically this is found at the brake pedal switch or in some case the wiring to the third brake light is used. I attached a help article on brake controller installs for you to check out as well.
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  • 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...
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  • Troubleshooting Hayes Genesis Brake Controller HA81790
  • If there is a problem in your Hayes Genesis trailer brake controller # HA81790 that is causing the issue with the truck and trailer brake lights it will probably still occur on the truck alone if the trailer is unplugged. I suggest disconnecting the trailer plug from the 7-way socket and then checking to see if the problem persists. If you can borrow another trailer for testing that can help determine if the problem is on the truck or trailer side. If the truck brake lights behave...
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  • Troubleshooting a Brake Controller that is Sending Max Voltage on Brake Output Circuit
  • Sounds like you need to test the brake controller so we can narrow down where the problem is. Testing the brake controller is fairly easy. Sever the blue brake output wire near the brake controller leaving enough room to reconnect it and then apply the manual slide. Using a circuit tester like the Quickee Tester, part # PTW2993, you should get output to the controller side of the wire you severed. If the manual slide activates the trailer brake output wire properly, try the brake pedal....
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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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