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Hayes Brake Controllers

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Hayes Reviews and Installation Videos


Expert Answers about Hayes

  • Instructions for Adjusting the Hayes Energize Brake Controller when Red Light Does Not work
  • The red light on the Hayes-Lemmerz Energize Electric Trailer Brake Controller, item # HA81745 should not illuminate until the brake pedal is pressed or the manual lever is activated. You may need to readjust the brake controller. This could happen because the brake controller position in the mount has changed or because the trailer weight has changed affecting the the ride height of the vehicle. If this does not solve the issue and the trailer brakes are not functioning properly you will...
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  • Constant Power to Trailer Brakes and Red Light Always On the Brake Controller
  • It sounds like there is a short to the blue wire (brake output) on the brake controller. This can be caused by corrosion in or behind the vehicle and trailer side connectors. Power from the 12 volt circuit at the vehicle side connector could be jumping to the brake output circuit. This would make the brake controller think there is power being applied and when the trailer is connected it can send full power back to the brakes. To eliminate the brake controller as the problem, cut the...
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  • Recommended Electric Over Hydraulic Trailer Brake Conversion for Dual 10K Axles
  • The Disc Brake Kit # K2R1058D13 by Kodiak is the brake set that you will need to use for your 10,000 lb Dexter Torsion axles. When it comes to hardware, like the brake line, I recommend going with the Kodiak Hydraulic Brake Line Kit # 24TA-BLKIT which will wear better than other traditional brands. These lines are very flexible so the line is easy to maneuver under the trailer. The only downfall is that you cannot cut the line due to how hard and risky it is to do yourself. All you have...
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  • How to Set Up the Hayes Energizer Electric Trailer Brake Controller
  • I would be happy to explain how to set up the Hayes Energizer Brake Controller, # HA81745. First, park the truck and trailer on a dry level surface. Next, adjust the gain wheel to the middle setting. Then, you will need to travel at about 25 miles per hour or less and step on the brakes like in a normal breaking situation. The red indicator light should light up from dim to bright during the stop and revert back to dim after the stop is completed. If the trailer brakes lock up, decrease...
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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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  • 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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  • Troubleshooting a Hayes Energizer Brake Controller with Trailer Brakes Not Working
  • You do not have to have your trailer connected to your vehicle when testing the brake controller. Also, when testing the brake controller make sure that the gain is adjusted high enough to give a correct brake signal. You are correct in that you will need to test the blue wire that is the output wire to your brake controller. I recommend using a circuit tester like the Quickee # 3808 to test the wiring both the input and the output side of the blue brake controller wire. I also recommend...
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  • Brake Controller Installation on 2008 Grand Cherokee Diesel
  • According to my contact at Tekonsha, there is not any special procedure or considerations for a brake controller installation on Diesel equipped models versus the gas-engined counterparts. To install your brake controller, you will look for a light green wire bundled up under the dash or behind the drivers side kick panel that would be next to your left foot while driving. This wire will connect the brake controller output (blue wire) to the 7-way. The power (black wire), ground (white...
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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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  • 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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  • Brake Controller Install Harness for Hayes Synchronizer in a 2014 Chevy Silverado 1500
  • To install the Hayes Brake controller part # HA81725 in your 2014 Chevy Silverado 1500 only requires you to use the install harness part # HA81798-HBC which is a confirmed fit.
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  • Is Red Light on Hayes Trailer Brake Controller Supposed to Light Up with Brake Pedal and No Trailer
  • I spoke with my contact at Hayes and on the Energize controller, # HA81745, the red light will come on when you step on the brakes with the trailer connected or not. Also, you should see some brightness variation in the light. The best way to test it is to use the manual override lever and see if the light gets bright when on full and dimmer as you release the lever. If it does not, use a circuit tester like # 3808 if needed to test the voltage output at the 7-Way connector while someone...
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  • Parts Needed to Install a Trailer Brake Controller on a 2012 Jeep Liberty with Factory 7-Way
  • At this time there is no plug in simple type of connector for a brake controller but I can tell you how to install one on your 2012 Jeep Liberty with the factory 7-Way. First you will need a brake controller. I recommend the P2 # 90885. It is one of the best selling controllers of all time because it is easy to set up, easy to use, works well, and has good longevity. You will need to do a little hardwiring to install it. On your Jeep there should be a light green wire either behind...
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  • What is Needed to Install a Brake Controller on a 1987 Ford F-250
  • To install the Hayes-Lemmerz Energize Electric Trailer Brake Controller, # HA81745, there are a couple of things you are going to need. Besides your brake controller, you will need 2 wiring harnesses. First, if your vehicle does not already have a 4-way connection, you will need the Tow Ready Custom Fit Vehicle Wiring, # 118316. I have included the instructions and two videos that feature this harness. Next, you will need Brake Controller 7 and 4 Way Installation Kit, # ETBC7. I have...
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  • Troubleshooting a Hayes Energizer Brake Controller # HA81745 Lighting Dimly All the Time
  • The light that you are seeing is an indicator for how much braking power is being applied. The brighter the light, the more power is being applied. It sounds like the pendulum arm on the left side of the Hayes-Lemmerz Energize III Brake Controller # HA81745 needs to be adjusted. You need to align it with gravity, in other words, it needs to point straight down. If the lever arm is too far forward, the indicator light will stay lit. Here are the steps for proper setting of the pendulum...
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  • Installing a Trailer Brake Controller on a 2013 Chevy Silverado
  • The wire colors on the tow package wiring on your 2013 Chevy Silverado will not match up color for color. You have to go by function. The wires under the dash should have been held together with a white tag listing their functions. If so then you just have to attach the brake controller wiring as follows: White is ground Black is 12 volt power Red is input from the brake switch Blue is output to the trailer brakes If the wires do not have the tag indicating their functions the...
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  • Items Needed to Install a Brake Controller on a 1996 Chevrolet C/K 1500 Pickup
  • As long as you have an existing 4-Way trailer connector at the rear of your 1996 Chevrolet C/K pickup you will have all of the parts needed to install a brake controller. The # ETBC7 kit includes all of the wiring circuit breakers and connectors needed. If you do not have an existing 4-Way connector you can use the 4-Pole Hardwire Kit Including Circuit Tester, item # 18252, to hard wire the 4-Way to the wiring going to the truck tail lights (see instructions link). You will need a circuit...
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  • How to Install Hayes-Lemmerz Energize Brake Controller on 1986 Chevrolet C/K Series Pickup
  • To add electric trailer brake control to your 1986 C/K Pickup you will use the brake controller and installation wiring kit that you already have, and you will also need a 4-pole trailer connector if your vehicle does not already have one under the rear bumper. The attached FAQ article details the required components and installation steps. If you need a 4-pole trailer connector, you can use part # 118312. This plugs into your tail light wiring without cutting or splicing and provides...
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  • No Power To Trailer Brakes When Using Manual Slide Switch on Hayes Brake Controller # HA81745
  • The brake controller should be getting 12 volts of power through the Black wire. You will want to use a multimeter like part # BTMT15 to test this wire for voltage. The Blue wire should have near 12 volts when the manual slide is activated. You will also want to make sure the gain on the brake controller is not set all the way down. If you are not getting power leaving the Blue wire, the brake controller may be bad and will need to be replaced. I would begin by making sure you have the...
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  • Installing a Trailer Brake Controller on a 2007 Chevy Avalanche
  • On a 2007 Chevy truck or SUV, in this case your Avalanche, under the dash there are tow package wires to install a brake controller. It sounds like you may have the red wire on the controller attached to an illumination circuit. Here is how it should wire into the truck: Brake controller black wire goes to truck red/black wire Brake controller white wire goes to truck white wire Brake controller red wire goes to truck light blue/white wire Brake controller blue wire goes to truck...
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  • Hayes XPC # HA81745 Brake Controller Versus Tekonsha P2 # 90885, P3 # 90195 or Primus # TK90160
  • The Hayes XPC is what I would refer to as an 'entry level' proportional brake controller. There's nothing wrong with it, it's just not very user friendly. Instead of a digital readout that will provide you with specific troubleshooting or information about how the controller is preforming, the XPC has an LED that gets brighter as more power is sent to the brakes. This set-up works just fine, as long as everything's working okay. When there is a problem, you'll need to do some unnecessary...
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  • Troubleshooting Hayes Brake Controller that LED Stays On All the Time
  • The Red LED indicator on the front of the controller # HA81745 should only be on when the trailer brakes are being applied. The first thing to check is that the red wire of the controller is attached to a circuit that only sees 12 volts when the vehicles brakes are applied and none when released. It sounds like there is a short to the blue wire (brake output) on the brake controller. This can be caused by corrosion in or behind the vehicle and trailer side connectors. Power from the...
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  • Hayes Energizer Brake Controller HA81745 Installation on a 2012 GMC Sierra 1500
  • It sounds like you are on the right track. Your 2012 GMC Sierra does not have an OEM plug for installing a brake controller, but they did run the wires for you. We do not offer an adapter that would allow you to hard wire the Hayes Energizer III brake controller, but you do have the option of just cutting off the existing plug. You should be finding the correct group of wires under the left side of the instrument panel you see to the left of the steering column. There may very well...
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  • Wiring Needed to Install a Brake Controller in a 2001 Ford F-250
  • If your 2001 Ford F-250 has factory installed 7-Way you will need to add Brake Control Wiring Adapter, # 3035-P. If you have factory 4-Flat, you will need Ford Replacement OEM Tow Package Wiring Harness, # 118243, in addition to the wiring harness above. I have included a link to the instructions for this harness below. I have also included helpful FAQs that discusses, in detail, wiring a vehicle for a brake controller that you might find helpful.
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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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  • 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 a Hayes-Lemmerz Energize Electric Trailer Brake Controller Dragging Brakes
  • You definitely need your Hayes-Lemmerz Energize Electric Trailer Brake Controller # HA81745 to be aligned with gravity correctly for it to work right. I would check that first. Here are the steps for properly setting up the pendulum. A. Connect the trailer to the tow vehicle for this adjustment. If a load leveling hitch system is used, it should be connected and operational. Locate the tow vehicle and trailer on a flat level surface. Make sure the tow vehicle stop lamps are operating...
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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 # 3808 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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  • Color Code for Connecting Hayes-Lemmerz Energize to a 2010 F-150 Brake Controller Port Pigtail
  • If you are using a pigtail for the brake controller like part # 22292 from Tekonsha, the wires match up color for color on the Hayes-Lemmerz Energize III. You will want to cut off the black connector on the Tekonsha harness before splicing. There is a wiring diagram for the connector which shows which terminal is connected to which circuit on the instructions page, see link. If you are connecting to the OEM wiring on the truck, it may not match up color for color. It is best to use the...
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  • After Re-Wiring Trailer and 1995 Chevy Suburban there are No Brake Lights at the Trailer Connector
  • On a 7-Way trailer connector, the brake lights and turn signals are on the same circuit on each side so it is interesting that the turn signals work but not the brake lights. This usually indicates a bad or weak ground. A bad ground will show up when there is more load on a system such as the constant bright brake lights as opposed to the intermittent turn signals or dimmer running lights. Make sure that the grounds are attached to a clean and corrosion free bare metal surface. Too many...
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