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Replacement Cable and Pin for Hopkins LED Breakaway Switches

Replacement Cable and Pin for Hopkins LED Breakaway Switches

Item # HM20051
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Hopkins Accessories and Parts - HM20051
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It may be small, but a functional pin is most important when it comes to your emergency breakaway system. 1-800-496-5010 to order Hopkins accessories and parts part number HM20051 or order online at Free expert support on all Hopkins products. Guaranteed Lowest Price and Fastest Shipping for Replacement Cable and Pin for Hopkins LED Breakaway Switches. Accessories and Parts reviews from real customers.
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  • Reviews (67)
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  • Videos (2)
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Hopkins Accessories and Parts - HM20051

  • Trailer Breakaway Kit
  • Cable and Pin
  • Hopkins

It may be small, but a functional pin is most important when it comes to your emergency breakaway system.


  • Works with Hopkins LED breakaway switches (HM20050, HM20059, HM20060, HM20005, HM20010 and HM20014)
  • Works with new style Hopkins Break-Away Switches (HM20005, HM20012 and HM20014)


  • Cable length: 48"
  • Pin length:
    • Overall: 1-3/4"
    • Usable length: 1-5/16"

20051 Replacement Cable and Pin for Hopkins LED Break Away Switch

California residents: click here

Video of Replacement Cable and Pin for Hopkins LED Breakaway Switches

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

Video Transcript for Hopkins Trailer Breakaway Kit HM20051 Review

Today we're going to be taking a look at the replacement cable and pin for Hopkins breakaway switches. Even though this unit is small, it is a very, very important part or component when it comes to your emergency breakaway system. Now, this is going to measure 4 feet long. It's 48 inches long. The cable is a steel cable, and it's going to be coasted with a protective coating. That's going to keep the cable from fraying.

It's also going to make it scratch-resistant, so it's not going to scratch anything that it comes into contact with. This is a straight cable design. I just have it bundled up for our video. When it comes to the pin, that's this right here. This is going to give us an overall length measurement of about 1 3/4 of an inch with an usable pin length of 1 5/16 of an inch. This is going to work with Hopkins LED breakaway switches, part numbers HM20050, 20059, 20060, 20005, 20010 and 20041, and it's going to work with new style Hopkins breakaway switches, part numbers HM20005, 20012 and 20014. That's going to do it for today's look at the replacement cable and pin for Hopkins breakaway switches..

Customer Reviews

Replacement Cable and Pin for Hopkins LED Breakaway Switches - HM20051

Average Customer Rating:  4.8 out of 5 stars   (67 Customer Reviews)

It may be small, but a functional pin is most important when it comes to your emergency breakaway system.


Works great, just as good a OEM!!


Haven't had to use. Installed it but never used it.


The Hopkins breakaway cable is apparently not the most common type, as I was unable to obtain one from nearby RV parts suppliers. I was very happy to find one online at etrailer. It is an exact duplicate of the one being replaced. The price was reasonable and it arrived when they estimated it would.


brake away cables appear to a little difficult to find. The plastic piece on this one, would not fit my current switch. But I cut the cable and installed on my old one. Much nicer than my old ratty cable. Cable well made and covered in plastic.


Great help from Customer Service! This was my first order from etrailer, and it went so smoothly. I was worried that the little part I ordered would be the incorrect one, but Jesse M. from customer service knew exactly what I needed and assured me it was correct. Not only was it correct but the delivery was as promised 2 day, delivered promptly on time. Next time I will feel real comfortable ordering everything I need from etrailer!


I purchased a replacement Break- away pin for my trailer. My experience was quick and easy. Had my part in two days and back to work with my trailer. Will definitely be purchasing from them again next time I need more parts!


Nicole knew just what I was needing for my car hauler. It was good to speak to someone who knew what I was talking about. in the a asset to etrailer. Whenever I need something in the future etrailer is who I will call first . Thank You


Being able to purchase just the pin and cable here saved me from replacing the whole break away system which appeared to be my only other (expensive) option.


perfect replacement breakaway pin & c able


Exact replacement for my brake controller. etrailer was the first place I looked for a replacement.


This replacement fits like OEM. And a bonus, the cable comes with the purchase. Tried to get one from the manufacture and they just send the plastic piece.
Although I was told that the product was going to take about 7 days to ship it got to me in 3.
Thanks guys! Awesome customer service and great products!


I was in immediate need of this part as the one from our vehicle was "borrowed" while it was parked at my wife's work place. I contacted etrailer via phone and was professionally and personally taken care of. Delivery was quick and the part was the correct one.
Great Company!


Everything was as described...... quick shipping ...... very happy with etrailer ... I am a returning customer and will continue to be .... great company


etrailer always has the right products for the right price, very shipping and great customer service. Thanks for being there with all my trailer needs. thanks again Randal


It's a break away brake cable. It fit and should work fine if ever needed.


Exact Replacement for what I Needed. If you need parts for your Trailer Etrailer is the place to go!!! Quality, Price, Speed of Delivery AAA+++.


Everything was reived and it was exactly what we ordered. Very happy shopping on Pricing, shipping all great!


ETrailer has been extremely helpful in all my needs! I highly recommend them for yours too


Good quality cable, has clear sheathing over the cable.
Better quality of cable than was installed from trailer manufacture.
Would recommend


Works great. You people have always been very helpful and sell great products


The replacement beak away cable work just fine and shipping was quick Thanks


Each time I order items from trailer it arrive professionally packed and amazingly fast. I waluld recommend them to everyone.


Product as ordered.
Service exceptional.

I will look here for parts I will need in the future.
Thank you,


I received my shipment in mail today. Very happy with product, price and service. This is my first order from etrailer and all went well for me.


exactly what I needed, and got here a day early...
Thank You Etrailer!!!!!!

Show More Reviews

See what our Experts say about this Hopkins Accessories and Parts

  • Replacement Pin For Break Away System
    When I measured the # HM20051, I found it to be 1-3/4 inches long in total, with the pin portion being 1-5/16 inches. You can see these dimensions in the accompanying photo. The HM20051 pin is the correct replacement for the following Hopkins break away switches: HM20050 HM20059 HM20060 HM20005 HM20010 HM20014 HM20005 HM20012 HM20014 The measurement I took and the one you took are so close and because they look identical, I strongly suspect the # HM20051 would be the correct replacement...
    view full answer...
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  • Replacement Breakaway Switch Cable and Plunger Pin Requirements
    There is not a size requirement for the cable itself on a breakaway system. You can see the cable diameter doesn't need to be very thick on this like # HM20051 because it is only required to pull the plunger from the system to activate the braking. So it needs to have a break strength strong enough to pull the pin (thus stronger than the plastic pin itself), but your safety cables or chains are what keep the trailer from being left behind and they are required to be equal or greater than...
    view full answer...
  • Should Trailer Breakaway Cable be Longer or Shorter than Safety Chains
    The breakaway cable should be longer than the safety chains according to RVIA Recreational Vehicle Industry Association. This will activate the brakes in the event you lose the trailer connection and the safety chains fail which will bring the trailer to a stop.
    view full answer...
  • Replacement Cable and Pin for Hopkins LED Breakaway Switch
    Thanks for the photo that was exactly what was needed to identify the correct Hopkins pin. Based on that, you have a Hopkins LED breakaway switch and we do have the exact replacement: - Replacement Cable and Pin for Hopkins LED Breakaway Switches # HM20051 If you take a look at the photo of yours and compare it to this pin you will see they are the same.
    view full answer...
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  • Should Breakaway Switch Cable Be Longer Or Shorter Than The Safety Chains?
    Since the RVIA recommends that the breakaway cable be longer than the safety cables, that is what I recommend you to do. This will give you a chance to slow down and recouple the trailer in the event that it gets unhitched from your tow vehicle, and will not just automatically apply the brakes on the trailer while it is still attached to your two vehicle via the safety chains.
    view full answer...
  • Where to Attach Breakaway Cable
    When installing The Replacement Cable and Pin for Hopkins LED Breakaway Switches # HM20051, I recommend you attach the cable to a tie down point in the bed of you truck. You could also use a stake pocket tie down and attach the cable to it. Another way is you could run the cable down to the safety chain loop on the bumper hitch if your vehicle is equipped. Finally you could attach the cable to the rails installed in the bed of your truck. When installing the cable you need to remember...
    view full answer...
  • Replacement Breakaway Pin for Hopkins Breakaway Kit 20400
    We have a replacement pin for the Hopkins Breakaway kit # 20400 with the part # HM20051 which is what you'd want to go with. We've never tested the combination you mentioned and since they are different brands it most likely wouldn't fit.
    view full answer...
  • What to Do About Missing Breakaway Switch Pin if You Don't Know the Manufacturer
    Not all pins are created equally but all breakaway switches are pretty much the same. Since we can't determine for sure which system you have I recommend replacing the whole switch with # HM20010. The only thing in the switch are 2 metal contacts that are kept separated by the plastic pin. When the pin is pulled the contacts can touch and complete the circuit from the battery to the brakes. That is why you can use a different switch. It is a very basic system!
    view full answer...
  • Replacement Breakaway Switch or Pin For Trailer
    The plunger can be put back in place without any other functions needed to reassemble. In fact, that is exactly how you test the system for function. If the pin is not able to be put back in place so that the brakes don't lock up, then you can simply disconnect the breakaway battery. As long as there is no power going through the system the brakes will only be active when there is power from the trailer brake controller. If the way the system was wired, makes the system lock the brakes,...
    view full answer...
  • Replacement Cable And Pin For Hopkins Engager Break-Away System
    I spoke with my contact at Hopkins about your Engager Break-Away system. They told me that there was a change to the pin about 3 or 4 years ago and the pin on the newer systems is actually shorter than the previous switches. If your break-away system is one of the newer models then part # HM20051 would work well for you. This is the 48 inch cable with the pin that attached to the break-away switch. If you have an older model with the longer pin, then part # HM20010 would be what you...
    view full answer...
  • Replacement Cable and Pin for Hopkins Breakaway Switches 20005 and 20014
    Choosing the correct replacement cable and pin for your 20005 and 20014 Hopkins breakaway switches will depend on the style of key that they accept. Hopkins changed the style of keys that their breakaway switches accept, but kept the part numbers the same. If you have the newer style switch that has a cross design in the pin hole that is 2-3/16 inches long, then you will need the replacement cable and pin, # HM20051. If you have the older style switch that requires a key with multiple...
    view full answer...
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  • Replacement Break Away Pin for Hopkins Engager Break Away System
    The Engager is the model name of the break away system manufactured by Hopkins. A replacement switch is available as part # HM20060. The switch features an LED that will tell you at a glance that your break away battery is fully charged and ready to go. If it's just the cable and pin you need, Hopkins currently offers two differently shaped pins, part # HM20012 and # HM20051, as you can see in the provided photo. If you don't know which one you need, you'd be better off replacing the...
    view full answer...
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  • Availability of Replacement Breakaway Switch without Battery Charger
    We do have a nice selection of replacement breakaway switches available that do not include the battery charger, such as the Hopkins Replacement Break-Away Switch # HM20014. This particular switch includes lead wires that measure 44 inches in length. For a replacement cable and pin, you can use # HM20051. I have attached a link that will take you to our available selection of replacement breakaway switches that you can also look through.
    view full answer...
  • Replacement Breakaway Pin Recommendation
    It looks like the Replacement Cable and Pin for Hopkins LED Breakaway Switches # HM20051 appears to be the closest match to your provided photo, if you can let me know what breakaway kit you have I can confirm the fit. The breakaway pin essentially holds two pieces of metal apart. Once pulled out it allows the 2 pieces of metal to touch completing the circuit between the breakaway battery and the trailer brakes. All you would have to do to reset the system is put the pin back into the...
    view full answer...
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  • How to Determine Correct Replacement Pin and Cable for Hopkins Breakaway Kit
    If you take another look at the photo I provided you can check out the styles of both Hopkins pins. Since you cannot find a part number the best thing to do is use this photo to determine the pin that you need, with the pin on the Replacement Cable and Pin for Hopkins Breakaway Kits # HM20012 having multiple prongs. If yours matches up this is the direction you should take. If you take another look and your pin looks more like the flat style of the Replacement Cable and Pin for Hopkins...
    view full answer...
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  • Replacement Breakaway Pin & Cable for Hopkins Break-Away Switch HM20010
    If you are referring to the pin for a breakaway kit like # HM20010 that you referenced we do sell a pin and cable on its own as part # HM20051. This replacement pin/cable works with many Hopkins breakaway kits, all of which are listed on the page for part # HM20051.
    view full answer...
  • How to Determine Correct Replacement Pin for Hopkins Engager
    The easiest way for you to know which replacement cable and pin you need is by the type of switch your Hopkins Engager Breakaway Kit has. If you take a look at the accompanying photo showing the two pins you can see that they are different styles. So if your switch has a cross shape and the pin hole is 2-3/16" long you need the newer style Replacement Cable and Pin for Hopkins LED Breakaway Switches # HM20051, which you can see in the photo on the left. Otherwise you have have a switch...
    view full answer...
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  • Does Breakaway System Pin for Flat Tow Supplemental Braking System Need to be Left in Place
    It's not recommended that the pin from the breakaway switch be removed, in order to keep dirt and debris from getting into the switch and interfering with its operation. Unfortunately, I'm not aware of a cover or cap. I've checked with a couple of our manufacturers who tell me that they don't offer a cap. Your best bet would be to simply leave the switch in place. I've been doing this for 15 years, and I've honestly never head of a breakaway pin being stolen. If you're using a # HM20010...
    view full answer...
  • Easy Solution for Lost Pin for Trailer Breakaway System
    The TAP Engager brakeaway kit you have on your trailer is a standard style of breakaway very similar to the Hopkins Engager part # 20099. For a replacement pin setup that would work well we have the # HM20010 which gives you a new switch, pin and cable. This is the easiest way to replace a breakaway pin is replacing the switch and pin all together as the switches themselves are all universal but matching the pins can be a bit harder. For just the pin of this system we have the # HM20051...
    view full answer...
  • Breakaway Pin Melted When Reed Into Breakaway Switch
    It depends on how long the trailer was sitting there before you reinserted the pin. On a system like the Hopkins Engager # 20099 the battery has a 5 amp-hours capacity so if you were within the 5 hour time limit that would explain why the pin melted. If it melted the whole switch then you can replace it with part # HM20010. Otherwise the replacement cable and pin is part # HM20051. If your trailer had been sitting there for a day or so and your pin was melted then I really am not sure...
    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...
  • Replacement Parts For Older Model Hopkins Engager Breakaway Kit
    The Hopkins Engager's box design and mounting brackets have changed over the years. There is a Side load Hopkins Engager available and a top load style. The Hopkins Engager part # 20400 is considered top load because you can see the lid from the top of the unit but the brackets do not allow you to install the box upright on the trailer's tongue like in your photo. The old style entire unit is no longer available but the replacement box part # HM20121 is available and can be installed...
    view full answer...
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  • Replacement Breakaway Pin and Cable for Bright Way Trailer Breakaway Kit
    The Bright Way Trailer Breakaway Kit with Switch, 12V, 5-Amp-Hour Battery, and Charger # 3802339 isn't a guaranteed fit with the Hopkins # HM20051. Instead I recommend using the Replacement Cable and Pin for Bright Way Trailer Breakaway Kits - 42" Long # 3802350.
    view full answer...
  • Replacement Breakaway Cable for 2016 R-Pod 180
    Trailer breakaway kits are not trailer-specific but a replacement part like the pin and cable does need to match your current breakaway setup. We have such items for Hopkins, Tekonsha, Curt and others and you'll see them all on the linked page. Just match the pin and cable by brand. Here are popular examples of this replacement part: Hopkins # HM20051 Tekonsha # 2010-A Bargman # 54-85-002 Curt # C52020 You can also just replace the entire switch with # 2005-P if you prefer.
    view full answer...

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