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Pulse Preventer for Electric Brake Controllers

Pulse Preventer for Electric Brake Controllers

Item # 5501
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5501 - Pulse Preventer Draw-Tite Trailer Brake Controller
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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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Draw-Tite Accessories and Parts - 5501

  • Trailer Brake Controller
  • Pulse Preventer
  • Draw-Tite


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




California residents: click here


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:

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:

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:

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:

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:

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



- 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


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Ask the Experts about this Draw-Tite Accessories and Parts

  • Troubleshooting Curt Echo Wireless Brake Controller Pulse from Hazard Lights
    I reached out to my tech contact at Curt and the Echo # C51180 wireless controller having this issue is likely due to some bleed over from your 7-way. I recommend starting there using sand paper or steel wool to clean each of the blades on both the vehicle side and trailer side of the connector. Sometimes corrosion or debris can cause one pin to bleed over to another function so cleaning it and using some dielectric grease like # 11755 to prevent that in the future should solve it. If...
    view full answer...
  • Install of Pulse Preventer for Electric Brake Controllers
    The cold side of the stoplight switch is the wire from your brake pedal that will only get voltage when you press down on the pedal, which I believe is the part you were asking about. That wire will connect inline to the brake lights; if you take a look at the diagram of the the Pulse Preventer for Electric Brake Controllers # 5501 I added it might make a bit more sense. The Pulse Preventer just goes in between so you assumed correctly that the other end is what the brown wire connects to.
    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...
  • 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...
  • Installation of Pulse Preventer 5501 on 1997 Ford F-800
    We don't have any specific information regarding the location of the brake light switch on a commercial truck like your 1997 Ford F-800, but finding it to install the Pulse Preventer for Electric Brake Controllers # 5501 should not be difficult. All you need to do is use a circuit tester such as the very handy Cordless Circuit Tester # PTW2979 and find the wire that only has voltage when you press the brake pedal. This is very often just above the brake pedal.
    view full answer...
  • Recommended Pulse Preventer For Electric Brake Controller To Prevent Brake Pulse From Turn Signal
    It sounds like the brake controller is picking up some of the current from the blinkers. I recommend installing the Draw-Tite Pulse Preventer # 5501, which will 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.
    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...
  • How Does the Pulse Preventer for Brake Controllers Install on a Vehicle
    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 (the red wire). 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...
    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 # 40376 if you need one, to probe the brake switch wires. Be sure to test all the wires with the brake pedal...
    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...
  • Solution for Prodigy Brake Controller Sending Power to Brakes with Hazards On
    We do sometimes see this issue on certain vehicles and when it happens the best solution is adding the Draw-Tite Pulse Preventer # 5501. This will essentially isolate the Prodigy brake controller on your Jeep from the flashers to prevent it from sending power when they are applied. I have attached a diagram to assist.
    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...
  • 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...
  • 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...
  • 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...
  • 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...
  • Pulsating Brake Performance with a Draw-Tite Activator II Brake Controller
    There could be many possibilities that are causing the pulsating of your brakes on your 2013 Ford F150. A few possibilities to start with would be to use a circuit tester like the Quickee Tester, part # PTW2993, and check the connection of your stoplight wire from the brake controller to your stoplight switch. This wire needs to be connected to the cold side of the stoplight switch, which will only show power when the brake pedal is applied. You will also want to check all the connections...
    view full answer...
  • Draw-Tite Activator Trailer Brake Controller Only Works with Manual Override on a 2008 Toyota Tundra
    This sounds like a common ailment that can happen to any brake controller on many different vehicles. The red wire on the brake controller is used to sense when you are stepping on the brake. When it does not work but the manual override lever does, it usually means that the red wire is not connected to the correct wire on the vehicle. What you will need to do is use a circuit tester, like # 40376, to find the correct wire on the brake switch, located above the brake pedal. There can...
    view full answer...
  • 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...
  • 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...
  • 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...
  • Brake Controller Pulses Brakes with Flashers on a 1997 Ford F-250
    The pulse preventer, part # 5501, should stop this problem. The flashers are sending feed back into the brake controller and pulsing it. Find the spot where the brake controller is spliced into the wire from the cold side of the stoplight switch. This is typically the red wire on the brake controller. 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 switch and...
    view full answer...
  • Solution for Trailer Brakes that Apply When Hazards are On
    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...
  • Installation of Pulse Preventer for Electric Brake Controllers on 1992 Ford F-150
    On your 1992 F-150, the pulse preventer # 5501 should be on the cold side of your brake light switch after the point where the brake controller prewired harness is spliced in. You the wires on the pulse preventer are definitely a thicker gauge so you just need to double up your smaller gauge wires for the butt connector to crimp them properly.
    view full answer...
  • Hazard Lights Engaging Brake Controller on 1984 Chevrolet Truck
    Essentially your hazard lights are telling your brake controller that the brakes are being engaged every time the tail light blink because the hazards are on the same circuit as the brake lights. When the hazards flash, the brake controller recognizes that and sends the signal out on the brake light circuit. To prevent your brake controller from sending the signal to engage your brakes when your hazard lights are on you need a Pulse Preventer # 5501.
    view full answer...
  • Trailer Brakes Pulsing With Hazzard Signals On 1993 Ford F-250
    Lets make sure the Pulse preventer is installed properly. 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 stoplight wire and install the Pulse Preventer inline with the yellow wire on...
    view full answer...
  • Trailer Brakes Pulsing with Flashers on in Tow Vehicle
    I recommend looking at the Draw-Tite Pulse Preventer for Electric Brake Controllers # 5501. This is designed to specifically resolve the issue you are having with a brake controller like your Prodigy P3 # 90195 when you have the flashers on in your vehicle. Installing this unit will isolate the brake controller from the flashers to eliminate the pulsing on your brakes. This will install inline on the vehicle's brake output or cold side wire after the connection point where the P3 is...
    view full answer...
  • How To Install Pulse Preventer On Vehicle with Factory Brake Controller Port
    The process to install the Pulse Preventer for Electric Brake Controllers part # 5501 on a vehicle with factory brake controller port entails locating the stop light switch wire in that harness (usually red) and splicing into this between the brake controller side and vehicle side. The other wire then get tied into the brake light circuit on the vehicle. I have attached a wiring diagram for you below. Please note, the pulse preventer is designed to allow you to tow a trailer with electric...
    view full answer...
  • Solution for Preventing Brake Controller From Pulsing with Hazard Lights
    What you need to prevent your hazard lights from activating your trailer brakes is a pulse preventer part # 5501. This installs like the diagram I attached shows and allows your brake controller to know the difference from when the hazards are on and when the brake pedal is pressed.
    view full answer...

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