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Pulse Preventer for Electric Brake Controllers

Pulse Preventer for Electric Brake Controllers

Item # 5501

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Draw-Tite Pulse Preventer Accessories and Parts - 5501
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  • Brake Controller
  • Pulse Preventer
  • Draw-Tite
Call 800-298-8924 to order Draw-Tite accessories and parts part number 5501 or order online at etrailer.com. Free expert support on all Draw-Tite products. Guaranteed Lowest Price and Fastest Shipping for Pulse Preventer for Electric Brake Controllers. Accessories and Parts reviews from real customers.


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  • Reviews (8)
  • Q & A (50)
  • Videos (1)
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Draw-Tite Accessories and Parts - 5501


Tow Ready Pulse Preventer by Draw-Tite, Hidden Hitch and Reese

When towing (in most applications) with Hazard flashers on, the Digital Display will flash with the Hazard Flashers. If the Brake Control is set aggressively, pulsing may be felt in the trailer brakes. The Pulse Preventer will isolate the Brake Control from the flashers and eliminate the flash/pulse situation.

  • For use with most Solid State Electronic Brake Controls
  • Required when the brake control unit must be set to higher output levels and driving with "hazard flashers" is necessary
  • Pulse Preventer is not necessary for vehicles that have a different bulb for the stop and turn signals (amber turn signals)
  • Maximum output: 20 amp


20501 Pulse Preventer for Electric Brake Controllers






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Video of Pulse Preventer for Electric Brake Controllers


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of Draw-Tite - Brake Controller - 5501

Today we're going to take a look at the pulse preventer for electric break controllers. Now, in towing and most applications with your hazard flashers on, the digital display on the break controller will flash with the flashers. And also if the break control's set aggressively, pulsing may be felt in the trailer breaks, and this pulse preventer will isolate the break controller from the flashers and help eliminate that flash pulse situation.This part will be installed where the break controller is spliced into the wire from the cold side of the stop light switch. And this is typically the red wire on the break controller, so what you'll end up doing is taking the red wire of the break controller, connect it with this yellow wire on this pulse preventer, and both can be connected to the wire that's coming out of the cold side of the stop light switch. And then this brown wire will connect to the wire that's going to the break lights.This is designed for use with most solid state electronic break controllers. It is required when the break control unit must be set to higher output levels, and driving with your hazard flashers is necessary.

The pulse preventer's not necessary for vehicles that'll have a different bulb for stop and turn signals. That's usually the amber turn signals. Maximum output on this is 20 amps. Does come with a nice set of installation instructions on how to install it, and then two Perma-Seal butt connectors for installing your wires.But that should do it for the review on the pulse preventer for electric break controllers.


Customer Reviews

Pulse Preventer for Electric Brake Controllers - 5501

Average Customer Rating:  4.8 out of 5 stars   (8 Customer Reviews)


- 5501
by:

it stopped the pulsing and was very easy to install 144153



- 5501
by:

This unit solved my problem of my trailer brakes pulsing with the hazards on and was easy to install. 13924



- 5501
by:

Hi I got my order sooner than I thought I was and that was great . Now all I have to do is get the time to install it on my suburban but that won't take long I read the instructions and they are easy. THANKS A HEAP YOU PEOPLE ARE GREAT AND IF NEED ANYTHING ELSE I WILL BE SURE TO COME TO YOU. 228702



- 5501
by:

I haven't installed the pulse preventer yet. 345882


Comments

This pulse preventer did not work as shipped on my 91 Ford F-350. It caused my brake light fuse to blow every time I applied the brakes or activated the brake controller. In my opinion, the problem was a design or manufacturing one: one side of the pulse preventer diode was electrically connected to the metal mounting bracket. I believe it should have been electrically isolated. When the mounting bracket was screwed to chassis ground under the dash, the brake circuit was shorted to chassis ground whenever the breaks were activated and the fuse blew. When I isolated the mounting bracket from chassis ground, the pulse preventer worked as intended. I ended up replacing the metal mounting bracket with a plastic one that I made. Then, the pulse preventer worked fine.

Tom - 02/25/2018

35129

Thanks for the response after a year of use, I am very glad that you were able to fabricate your own plastic mounting bracket. I did speak with my contacts at Draw-Tite and they did advise that there should have been a plastic isolator (looks like a washer) included with the pulse preventer. The isolator should prevent the issues that you explained, but I am happy you were able to adapt and make it work for you.

-- Rachael H - 2/26/2018


- 5501
by:

Worked as advertised 597489



- 5501
by:

Purchased this pulse preventer to fix a factory wiring issue on a 2016 Toyota 4-Runner. It had to be placed in the brake pedal switch circuit and it works great. This product would be better for this application if it were reduced to a flying connection (no bracket). 414239



- 5501
by:

The Pulse Preventer did solve my problem with the Trailer Brakes. But it would have been more helpful if it had come with instructions for installation. I had to search online to find that information. 294388



- 5501
by:

If you're installing a brake controller in a vehicle with single color turn/brake singles...ie NON Amber turn signals you will NEED this!!! I kept blowing fuses whenever I pushed the brake controller's manual brake actuator. The pulse preventer prevents the brake controller from sending an electronic pulse into the vehicles circuitry. Once this was installed everything works perfectly! 188243


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Ask the Experts about this Draw-Tite Accessories and Parts
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  • Parts Needed to Install a Brake Controller for a 2008 Chevy Silverado 1500
  • On newer vehicles, especially those with tow packages, a pulse preventer is not needed. It was a problem with older trucks that is not present anymore. Should it become a problem later, you can always add it, but I doubt you will need to. There is not a plug in connector for the Tekonsha Powertrac brake controller, part # 39523, for your 2008 Chevrolet Silverado. In 2007 when GM switched the truck bodies, they did away with brake controller ports. They now use a bundle of wires that...
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  • Is an Adapter Needed for the Titan BrakeRite EOH Actuator on a 2017 Chevrolet Silverado 3500
  • The pulse prevent part # 5501 only applies to older trucks with an aftermarket brake controller. What I believe you are referring to is an adapter like part # T4846000 that will allow the factory integrated brake controller (ITBC) on your 2017 Chevrolet Silverado 3500 to work with a Titan BrakeRite EHB Electric-Hydraulic Actuator like part # T4813100 If this is the case then as long as the ITBC in your Silverado has an electric over hydraulic (EOH) mode built-in then you will not need...
    view full answer...

  • Troubleshooting Trailer Electric Brake Drums And Why They Are Pulsating When Applied
  • Several things could be causing the pulsation. First, you may need to turn the drums like you mentioned which is fine so long as you remain in spec. Second, if you are hauling any containers with liquid in them then the pulsation can be caused by the liquid shifting and impacting the brake functioning. Third, you may have a pinched or loose wire. I would check all of these things and hopefully an easy fix. Another option to consider is adding a pulse preventer like the Draw-Tite...
    view full answer...

  • Trailer Brakes and Brake Controller Display Pulsate when Turn Signal is Used
  • You will need to splice into the correct wire for the brake controller red wire. The issue is probably related to a shared turn signal/brake circuit. Since you tapped into that circuit the brake controller is going to apply the trailer brakes when the turn signal is on. To find the correct wire first locate the brake switch above the brake pedal. Then use a circuit tester like # ALL640595 if you need one, to probe the brake switch wires. Be sure to test all the wires with the brake pedal...
    view full answer...

  • How to Eliminate Tow Vehicle Brakes Activating When Flashers are Used With Electric Brake Controller
  • When flat towing a vehicle using an electric brake controller and the flashers are turned on, the flashers will send a matching pulse back into the brake controller and light up the tow vehicle brake lights and if the brake controller is set aggressively may pulse the tow vehicles brakes. To eliminate that from occurring you will need the Draw-Tite Pulse Preventer, part # 5501. The Pulse Preventer will isolate the brake controller from the vehicles flashers. This part will install where...
    view full answer...

  • Troubleshooting Trailer Brakes Pulsating with Turn Signal and Brakes Activated on Pontiac Montana
  • It sounds like you might have tapped into the wrong wire beneath the brake pedal in your Pontiac Montana SV6. The red wire from the brake controller needs to be spliced into the cold side of the brake light switch on the vehicle, which is a wire that only receives power when the brake pedal is depressed, and none when any other function is activated. The wire you currently have the red wire connected to may be a shared turn signal/brake circuit, which is why the brakes are pulsating with...
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  • How to Wire in an Electric Trailer Brake Controller Pulse Preventer
  • To install pulse preventer, # 5501, you will be installing inline on the vehicle brake output or cold side wire after the connection point where the brake controller is spliced in. Basically, the brake controller red wire will be attach to the cold side of the brake switch. On this same wire, you will install the pulse preventer. After the connection point of the brake controller, cut the wire that leads to the brake lights. Attach the end closest to the brake controller to the yellow...
    view full answer...

  • Trailer Brakes Engage When Activating Turn Signals in Tow Vehicle
  • The trailer brakes engaging when activating the turn signals in your tow vehicle can be caused by a couple of things. I first recommend checking both the vehicle side and trailer side connectors for any dirt or corrosion in and around the pins. Corrosion can cause the separate circuits to become bridged together, which would explain why one function in your vehicle is activating a different function on the trailer. Simply clean out any dirt and debris as needed. Also check to make...
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  • Installing a Pulse Preventer and a Hopkins 4-Way to 7-Way Adapter # 37185 on a 1999 Ford Explorer
  • When you install the pulse preventer # 5501 on your 1999 Ford Explorer you will be installing it inline on the vehicle brake output (cold side) wire, after the connection where the brake controller is spliced in. Find the spot where the brake controller is spliced into the wire from the cold side of the stoplight switch. Then just past this (away from brake controller) cut the vehicle stoplight wire and install the pulse preventer inline with the yellow wire on the side that the stoplight...
    view full answer...

  • Solution for Trailer Brakes Pulsing with Hazards on 1991 Ford F-250
  • In order to prevent the trailer brakes from pulsing with the hazards on your 1991 Ford F-250 you just need to add the Draw-Tite Pulse Preventer # 5501. This will isolate the brake control from the flashers to eliminate this issue. I have attached a diagram to assist.
    view full answer...

  • Does 4 Way Hazard Flashers Interfere with Trailer Brakes Using Curt TriFlex Trailer Brake Controller
  • Driving with your hazards lights will sometimes interfere with brake controllers. In these instances you will need a pulse preventer. A Pulse Preventer, part # 5501 is required on vehicles that carry the brake light and turn signal on the same circuit. If your Pilot carries the brake and turn signal on different circuits, you do not need a Pulse Preventer. The Pulse Preventer installs inline on the wire which runs from the brake controller to the brake stoplight switch which is the red...
    view full answer...

  • Installation Of A Pulse Preventer To Keep Trailer Brakes From Engaging When Vehicle Flashers Are On
  • A pulse preventer like # 5501 needs to be spliced in before the stop light wire splits off to the two sides for the brake light and turn signals. It has a diode that needs to be recognized before it meets the turn signal/flash connection point. You will need to splice this in under your dash. I've attached a picture that is a little clearer to help.
    view full answer...

  • New Trailer Brakes Pulse In Rhythm with the Left Hand Turn Signal
  • It sounds like the brake controller is picking up some of the current from the blinkers. Installing a Pulse Preveneter, part # 5501, should remedy the issue. A pulse preventer essentially filters out the fluctuations created by the blinkers so that only the constant signal of having the brake pedal applied will activate the controller. I have added a link to the part below.
    view full answer...

  • How Does the Draw-Tite Pulse Preventer Work
  • The pulse preventer, # 5501, works in much the same way as a diode. Basically it allows a signal to only pass through one way on the circuit it is attached to. In this case the signal that might try to backfeed would be the hazard signal on a vehicle that has combined brake lights and turn signals. The pulse preventer is not needed if the vehicle has separate bulbs for turn signals and brake lights, if you are NOT towing with the hazards on, or in some cases when the brake controller...
    view full answer...

  • Troubleshooting ABS Light on a 2016 Toyota 4Runner After Brake Controller Install
  • The issue isn't the controller and is the wiring that Toyota provides for brake controller install on your 2016 Toyota 4Runner. The only solution is going to be to use the # 5501 wired backwards like the answer you referenced mentioned. I know its a strange sounding solution but if you cut the red wire of your brake controller wiring and wire the # 5501 so that the brown wire goes to the brake controller side and the yellow wire runs to the vehicles wiring the problem should go away.
    view full answer...

  • Installing Draw-Tite Pulse Preventer For Electric Brake Controller
  • You will need to install the Draw-Tite Pulse Preventer part # 5501, inline on the vehicle brake output or cold side wire after the point where the brake controller is spliced in. The brake controller red wire will be attached to the cold side of the brake switch. On this same wire, you will install the pulse preventer. After the connection point of the brake controller, cut the wire that leads to the brake lights. Attach the end closest to the brake controller to the yellow wire and...
    view full answer...

  • Why Do Trailer Brakes Come on When Hazard Lights Do When Brake Controller is Installed?
  • When towing with Hazard flashers on, the Digital Display may flash with the Hazard Flashers. If the Brake Control is set aggressively, pulsing may be felt in the trailer brakes. A Pulse Preventer, item # 5501, will isolate the Brake Control from the flashers and eliminate the flash/pulse situation.
    view full answer...

  • Hazard Lights on a 1997 Ford F-450 Causing Brake Controller to Send Pulse Signal to EOH Actuator
  • Yes, the Pulse Preventer for Electric Brake Controllers # 5501 is exactly what you need to keep the EOH actuator from activating while your hazard lights are on. Hazard lights are tied into the stop light switch just like your Prodigy P2 # 90885 is. That is why the P2 will send a pulse signal when the hazards are activated on your 1997 Ford F-450.
    view full answer...

  • Installing the Draw-Tite Pulse Preventer # 5501
  • Actually the Pulse Preventer # 5501 that you referenced will not install on the brake controller output wire (which is typically Blue). Instead, the Yellow wire will need to be spliced in to the cold side of the stop light switch and then the Brown wire will be spliced in to your brake light circuit. A diagram is attached to help demonstrate this.
    view full answer...

  • Brake Controller Light Flashes When I Turn on My Emergency Flashers on a 1991 Ford F-350
  • This is a common problem on older vehicles. With the flashers on, the brake controller light will blink. If you have a trailer connected it will also pulse the trailer brakes, which you do not want to do. If you will need to use your flashers while towing an electric brake equipped trailer, you will need a Pulse Preventer like part # 5501.
    view full answer...

  • Troubleshooting Pulsing Trailer Brakes Using a Hidden Hitch Pilot Brake Controller
  • I spoke with my contact at Hidden Hitch about the problems you are having with the Pilot Brake Controller, # 80550. First, a pulse preventer will not be needed because the problem you are describing does not seem symptomatic of the issues that would necessitate a pulse preventer. What you can do is test the brake controller with a multimeter, like # BTMT15, with the vehicle sitting still. You should get a constant 12 volts on the red wire when you step on the brakes and no voltage when...
    view full answer...

  • Electric Brakes are Pulsating When Vehicle Hazards are Activated
  • I have a solutions for your pulsating electric brake issue. Installing the tow Ready Pulse Preventer for Electric Brake Controllers, # 5501, will help eliminate the pulsing in your electric brakes, especially if you have the brake controller set at an aggressive setting. The attached diagram will explain the basic installation of the pulse preventer for you to review.
    view full answer...

  • How to Install the Draw-Tite Activator # 5100 in a 2009 Chevy Silverado 1500 with the Tow Package
  • To install the Draw-Tite Activator # 5100 in your 2009 Chevrolet Silverado 1500 you will need the Replacement Brake Control Plug-In Harness # 20127. You will then splice the following wires from the harness to the following functions on your Silverado: Black - 12V Power Blue - Brake Controller Pin on 7-Way White - Ground Red - COLD Side of Stop Light Switch (only gets hot when brake pedal is pressed) I have attached a video of this controller being installed on a 2012 Chevy Silverado...
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  • Trailer Brakes Apply when Emergency Flashers/Hazard Lights are On in an Older Ford Truck
  • Yes, you need what is called a pulse preventer, # 5501. You mentioned that you have an older Ford truck. Depending on how old it is you may need to connect the brake controller red wire to a different location on the truck. If your truck is a 1989 to 1991 model year you will need to locate the crescent-shaped turn signal harness located on the steering column under the dash. The connector will have two rows of wires (a row of 4 and a row of 7). Attach the brake controller red wire to...
    view full answer...

  • Tekonsha Primus IQ Trailer Brake Controller # TK90160 Blowing Fuse on 2015 BMW X5
  • I spoke with my contact at Tekonsha and in order to correct the issue of the circuit being overloaded when installing the Primus IQ Trailer Brake Controller, # TK90160, on your 2015 BMW X5, you will need to install a Pulse Preventer, # 5501. The pulse preventer will need to be wired backwards which will allow power to come from the vehicle but will block power from coming out of the controller and back to the vehicle. Once you have installed the pulse preventer, I recommend taking your...
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  • Troubleshooting Draw-Tite Act I Brake Controller, # 5100 Not Engaging Trailer Brakes
  • Since the Draw-Tite Act I Brake Controller, # 5100, used to work. I am inclined to believe it is not a miswire situation as the instructions suggest (linked for reference). There are a couple of possibilities. First, it is possible that the controller was bumped out of position on accident causing it to not function properly. This is an easy fix as you would just have to reposition it according to the instructions. I also recommend going ahead and adjusting the settings as if it were the...
    view full answer...

  • Function and Installation of the Pulse Preventer for my 1990 Motorhome
  • Yes, the Pulse Preventer for Electric Brake Controllers, item # 5501, will eliminate the pulse problem with your electric trailer brakes. When you install the pulse preventer you will be installing inline on the vehicle brake output (cold side) wire, after the connection where the brake controller is spliced in. Find the spot where the brake controller is spliced into the wire from the cold side of the stoplight switch. Then just past this (away from brake controller) cut the vehicle...
    view full answer...

  • Troubleshooting ABS Light On 2015 Toyota 4Runner After Brake Controller Install
  • I spoke to my tech contact at Prodigy and he said that he has heard of this issue on two other 2015 4Runners and the solution they have for right now until they can get their hands on one is to wire up a pulse preventer like part # 5501 backwards to the stoplight signal to prevent the error code. I know it's a strange sounding solution but if you cut the red wire of your brake controller wiring and wire the # 5501 so that the brown wire goes to the brake controller side and the yellow...
    view full answer...

  • How to Install the Pulse Preventer for Electric Brake Controllers
  • To install pulse preventer, # 5501, you will be installing inline on the vehicle brake output or cold side wire after the connection point where the brake controller is spliced in. Basically, the brake controller red wire will be attached to the cold side of the brake switch. On this same wire, you will install the pulse preventer. After the connection point of the brake controller, cut the wire that leads to the brake lights. Attach the end closest to the brake controller to the yellow...
    view full answer...


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