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Replacement Tekonsha Trailer Breakaway Switch
Tekonsha

Replacement Tekonsha Trailer Breakaway Switch

Part Number: 420000
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$11.26
Retail:$21.99
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Tekonsha Accessories and Parts - 420000

  • Trailer Breakaway Kit
  • Switches
  • Tekonsha


Features:

  • Application: up to 4-axle trailer brake systems



2010-B125 Tekonsha Replacement Breakaway Switch for Kit 2010-P




California residents: click here


Video of Replacement Tekonsha Trailer Breakaway Switch

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




Video Transcript for All About the Replacement Tekonsha Trailer Breakaway Switch

Today, we're going to be taking a look at the Tekonsha Replacement Breakaway Switch. Now, a breakaway switch is designed to apply power to the trailer brakes, to stop the trailer should it become disconnected from the tow vehicle. If the trailer and vehicle disconnect, the vehicle pulls on this cable right here, which pulls the pin out of the switch. Once this happens, the trailer brakes are applied, which will bring the trailer to an eventual stop. The kit is going to come with the switch. It's going to come with the wiring. It's going to come with the pin.

It's already installed there, and it's going to come with the cable. It's already attached. The wire leads on this side, these are going to measure 48 inches, or 4 feet long. One wire gets connected to power, the other wire gets connected to the electric trailer brakes. On this side, we're going to have the cable.

This is a high-strength, steel cable that's covered with a protective coating to keep it from fraying and to keep it from scratching anything that it comes into contact with. Now, this unit is designed for 1 to 4 axle trailer brake systems. The cable length is going to measure 48 inches or 4 feet long. It's got the looped end on here, that would connect to the tow vehicle. When it comes to the dimensions of the switch, it's really nice, low-profile design. This is going to give us an overall length measurement, and I am including the bracket.

From edge to edge, we're looking at about 4 7/8 inch long, and that's measuring from the end of the bracket to the end of the pin. The switch body, that's going to give us a measurement of about 3 inches long. The overall width, you can see that the switch kind of hangs out over the side a little bit, so the overall width is right around 1 7/8 inch. Just that bracket width is going to be about 1 1/2 inch. Then, the height, or the thickness, it's only about 7/8 of an inch. It does have a mount hole right here.

That's going to give us a diameter of 1/4 of an inch, and hardware is not included to get that mounted to the trailer frame. That's going to do it for today's look at the Tekonsha Replacement Breakaway Switch.

Customer Satisfaction Score:


Customer Reviews

Replacement Tekonsha Trailer Breakaway Switch - 420000

Average Customer Rating:  4.8 out of 5 stars   (66 Customer Reviews)


by:

Very impressed by the product and service that I received. Thank you and other products that I need I will be sure to buy from you all.



by:

This item was exactly what I needed. The etrailer site was so easy to navigate and the selection of items cannot be beat. Whether you are looking for a component or a complete kit, they seem to have it all.



by:

If it lives 20 years, it's good .



by:

This allowed me to back up my camper easier because it move the distance from hitch to wheels just enough. Very very strong.



by:

Purchased this switch to replace old rusty unit on our cargo trailer. I checked function with volt meter prior to installation and it works as advertised. Quality seems to be very good. It's one of those things you have to have but hope it never gets any opportunities to perform! Good customer service and prompt delivery. No problems.

Ken R. profile picture

Ken R.

8/28/2016

No problems. Unit is holding up well and dont foresee any problems.



by:

etrailer products and service are excellent! With their helpful videos and staff (plus a little help from Curt Manufacturing and our teardrop trailer manufacturer (CampInn)) I was able to install electric brakes on the trailer, and a controller in my vehicle by myself. I had never installed electric brakes before. Everything works perfectly!



by:

Good product, simple and works. Used this to replace the original brake switch due to it breaking. Wired to a small 12V breakaway battery then to Blue brake wire on the car trailer and all works as it should.



by:

Helped make it easier to back up traile r.



by:

Got everything I needed fast shipping and good prices!



by:

Ordered battery box and break away switch. Received item in a timely matter and was a good quality for the price. Happy with E-trailer co. will order from them as needs arise.



by:

Great products great service!



by:

This is an exact replacement for the oem on my trailer. Won't install until spring, but I expect it will work fine. Received product very quickly and in good shape.



by:

Great replacement breakaway switch.



by:

Purchased a second hand RV that had a damaged switch and ordered an exact replacement from etrailer that works great.



by:

Got it in the mail faster than the estimated shipping! Easy install. This website has a lot of videos of installations which are helpful.



by:

Products I received were easy to install. I followed the instruction videos on your web site which were very helpful. I am very satisfied with your service.



by:

Put the axle seals in the same box as 40 hooks and bent a few of them a bit

Jenny N. profile picture
Etrailer Expert

Jenny N.

1/13/2024

Oh no! I will have our Customer Service team reach out to you.



by:

easy as falling off a log to install to replace my old one

Robert profile picture

Robert

12/16/2022

despite my best effort it is still working. it constantly exposed to road dirt, rain and heat



by:

Always have what I’m looking for and great prices



by:

Top notch service! I placed an order mid-day as a rush delivery and received my items in the morning the next day. The product was exactly what I needed with no surprises. Keep up the great work!



by:

Right parts at a great price !!!



by:

This is a geeat safety feature and eTeailer has excellent customer service and is our go-to place for anything for our trailer



by:

Quality part good service



by:

Quality product and fast order processing by etrailer. Thanks guys, I will be checking with you for all my future needs.



by:

Bought for an exact replacement of existing switch which the contacts rusted out on. worked perfectly!


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See what our Experts say about this Tekonsha Accessories and Parts

  • Wiring a Trailer Breakaway Kit on a Bigfoot Travel Trailer
    In order for a break away system to power electric trailer brakes, it will need a 12 volt power source (a battery mounted on the trailer). The battery has to provide a full 15 minutes of braking power to comply with DOT regulations. On the trailer connector there is a wire that goes back to the trailer brakes. This wire may be black or blue depending on the specific system. Attach one wire from the switch to the wire that goes to the trailer brakes. There should be another wire, usually...
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  • Replacing Breakaway Switch On a Trailer with ESCO Breakaway System
    You likely can use any replacement switch since all they do is complete a circuit when the pin is pulled out. One wire on the switch should be connected to the positive battery terminal on the trailer. The other will tee into the wiring leading from the trailer connector to the brake magnets like in the diagram I have included. Just follow the wires on the old switch to where they are connected and remove them. I have also included a link to the right that should help.
    view full answer...
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  • Replacement Breakaway Switch for Trailer Breakaway System
    Yes the Curt Push-To-Test Trailer Breakaway Kit # C52042 would work as a replacement breakaway switch replacement but it comes with probably more components than you'd need if you only need the switch. Instead you could use the part # 420000 which is a universal switch that can basically fit any system. This would wire in exactly like your current switch. Either wire can be used as the power or ground.
    view full answer...
  • Troubleshooting Trailer Electric Brakes and Breakaway Kit Installation
    If you just put new brake assemblies on your dump trailer, the brake magnets have two wires and it doesn't matter which one gets the brake controller output voltage and which one is grounded to your trailer. You do want to make sure the one grounded to your trailer has a bare metal to metal connection free of rust, corrosion, or debris. If you have also added a breakaway system like the Replacement Tekonsha Trailer Breakaway Switch # 420000 you asked from, then you will want to install...
    view full answer...
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  • Breakaway Battery Causes Trailer Breaker to Pop When Connected Troubleshooting
    Sounds like you have at least a few wiring problems going on with your setup. Instead of trying to troubleshoot each issue you have I think it would be smart for you to inspect all of the trailer wiring you have starting with the 12 volt circuit from your tow vehicle to the battery and breakaway system to see if you can find any shorts or exposed wire and fix as necessary. I attached a diagram and an FAQ on breakaway systems for you to check out. I also attached an FAQ on trailer wiring...
    view full answer...
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  • Replacement Breakaway Switch Recommendation for UPG D2901 Solution
    I wish we carried that but we do not. One solution we can provide is to replace the entire switch with part # 420000. This will be the easiest solution and will work well as the switches are universal.
    view full answer...
  • Identifying a Trailer Breakaway Switch with ESCO Printed on the Switch
    ESCO actually stands for Elkhart Supply Corporation, that is the brand of your breakaway switch. Most likely it is part number LBS48-16. If you are looking for a replacement switch the Hopkins Replacement Break-Away Switch # HM20014 should work well for you. I attached a couple FAQ articles on breakaway switches for you to check out as well.
    view full answer...
  • Trailer Breakaway Switch Compatible With 12-Volt RV Battery
    Yes, the Trailer Breakaway Switch # 420000 can be wired to the 12 volt RV battery on your trailer as long as the battery has a charge line to maintain its power while you are towing. I prefer to use the Fastway Zip Trailer Breakaway Switch with Coiled Cable in 4' # FA80-00-2040 or 6' # FA80-00-2060 since there is less chance of the coiled cable becoming damaged. I have included the wiring diagram from Fastway that shows how the breakaway switch is wired to your RV battery.
    view full answer...
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  • Replacement Pin for an LBS48-16 ESCO Break Away Switch
    While we do have numerous replacement break away system pins, all of which are similar, I cannot guarantee that any will fit your ESCO brand switch because they have not all been tested together. The difference in cost between a replacement pin and a new switch is minimal so I advise just replacing the switch with # HM20010.
    view full answer...
  • Is a Circuit Breaker Required When Installing Trailer Breakaway Switch?
    When installing a breakaway system and the Replacement Tekonsha Trailer Breakaway Switch # 420000 you asked about, there is no need to add a circuit breaker or in-line fuse. I've attached a help article for the installation of a system as well as a video of an installation to assist.
    view full answer...
  • Can Replacement Breakaway Switch # 420000 Be Used with Any Breakaway System
    For the most part, all breakaway situations work the same way. There are a few exceptions but they are not common. If your existing system used 2 wires like # 420000 then you can use it or any similar switch. I have included a link to all of the breakaway switches we carry.
    view full answer...
  • Troubleshooting Brake Controller that Only Works with Override Lever
    Sounds like your brake controller will apply your trailer brakes if you apply the manual override lever but not when you press the brake pedal. This is a fairly common problem and the solution is the red wire of the brake controller. Make sure it is connected to a circuit that only sees voltage when the brakes are applied and none when released. Most likely the connection is the issue and just reconnecting the circuit will cause the controller to work again.
    view full answer...
  • Wiring a Replacement Breakaway Switch
    I can help you wire the Replacement Tekonsha Trailer Breakaway Switch # 420000 and the accompanying diagram shows exactly how it will be wired; I have also added a link to a video which shows it being installed. The white wire is a ground wire and the other two wires are interchangeable. One will be spliced from the from the switch and blue trailer brake wire that is running from the trailer connector to the trailer brakes. The other wire will be spliced to the blue brake wire coming...
    view full answer...
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  • How Much Force Is Required To Remove The Pin On a Trailer Breakaway Switch?
    The Trailer Breakaway Switch # 420000 should be somewhat difficult to pull out. It is designed to stay in place unless the trailer disconnects and is held firmly in place to not be pulled out due to vibrations and possible road debris when towing. If you give the cable a quick tug it should allow the pin to more easily be removed for testing. You will then be able to attach your Coiled Breakaway Cable # FA80-01-2140.
    view full answer...
  • Solution for Needing Blue Ox Breakaway Switch Replacement for BX88181
    The Blue Ox breakaway switch BX88181 is no longer available but it was basically just a standard breakaway switch so you could use the part # 420000 in place of it very easily. It functions the exact same and would wire in the exact same way as well.
    view full answer...
  • Trailer Break Away Switch is Draining Trailer Battery
    There is always going to be power going to the breakaway switch but that power will not go anywhere unless the pin is pulled. And if the pin is pulled your brakes would lock up. There could be something else that is draining the battery. Check all the wiring to the battery, brakes, and break away system. You will be looking for loose or broken wiring, corrosion, and loose connections. Clean off dirt and corrosion on the wiring/connectors. You should also know that the 12 volt circuit from...
    view full answer...
  • Do You Have a Replacement Pin and Lanyard for a Trailer Breakaway Switch
    If you have the Tekonsha trailer breakaway kit you will need the Replacement Tekonsha Trailer breakaway Switch, part number 420000, to replace your lost or broken cable and pin. If you have a Hopkins Breakaway system then you can order the Replacement Cable and Pin for Hopkins Breakaway Switches, part number HM20051 which works on the HM20059 and HM20060 breakaway switches.
    view full answer...
  • Replacing Breakaway System Switch on Lacrosse Travel Trailer
    All the breakaway switches we offer serve the same function and are pretty much interchangeable as long as the switch on your trailer is normally closed. The circuit is normally closed until the switch pin is pulled, which closes the circuit and allows the voltage from the battery to reach the trailer brakes. Just because the system you currently have uses a switch from Bargmann, doesn't mean your replacement needs to be of that brand too. The Hopkins replacement breakaway switch, part...
    view full answer...
  • What Does a Trailer Breakaway Kit Do
    Yes, what you described is the correct purpose of a trailer breakaway braking system. If for some reason the hitch and the safety chains were to fail and the trailer was to be completely unattached from the tow vehicle the breakaway kit would activate the trailer brakes so that it would stop as soon as possible. You would want to ensure that the length of the cable is enough so that under normal situations the pin would not get pulled while the trailer is still safely connected to the...
    view full answer...
  • Solution for Trailer Breakaway Pin that is Broke and Won't Stay Installed
    The easiest solution for a breakaway pin that keeps popping out would be to replace the entire switch since they are all universal and the install is really easy. For that the # 420000 would be a great solution that will wire right in place of what you have.
    view full answer...
  • Should a Rusted Trailer Breakaway Switch be Replaced
    The pin that keeps the contacts inside a break away switch is plastic or otherwise a material that does not conduct electricity. As long as the contacts on the inside are not rusted the switch will continue to work. There is a way you can test it and I have linked an FAQ that shows how. Given that rust spreads it sounds like it would be a good idea to replace the switch. You can use any switch, like # 420000, that you have referenced. If the wiring to and from the switch is removed then...
    view full answer...
  • Troubleshooting Breakaway Switch To See If it is Reason System Isn't Working
    If you cut the wiring of the switch and bypassed it like you mentioned and could hear the brakes hum that would mean that the switch is the issue that's preventing the system from working properly. Based on what you mentioned already it does sound like this is the most likely cause. In that case a replacement switch like the part # 420000 would be what you'd need.
    view full answer...
  • Replacement Trailer Break-Away Switch for a Hopkins Engager Trailer Break-Away Kit
    The Replacement Tekonsha Trailer Breakaway Switch, item # 420000, is compatible with Tekonsha breakaway kits. The item # 20099 is a Hopkins breakaway kit, and it uses a Hopkins switch. The Tekonsha switch may work but for safety purposes we recommend replacing the switch with the original manufacturers switch. We offer two different Hopkins replacement switches with different lengths of lead wire. They are the Hopkins Replacement Break-Away Switch, 7 inich Lead Wires, item # HM20010, and...
    view full answer...
  • Breakaway Switch Diagram for Installation on a Dump Trailer with Trailer Mounted 12 volt Battery
    I attached a diagram showing how a breakaway switch, like part # 420000, would be wired to a trailer mounted battery like the one on your Loudo dump trailer. With this type of setup you would not want to pull the breakaway switch with the trailer connected to the vehicle, to avoid a short circuit situation which could damage your brake controller. When testing the breakaway switch just be sure to disconnect the trailer connector from the truck, as it would be in a breakaway situation. The...
    view full answer...
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