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Tekonsha Shur-Set III Trailer Breakaway Kit - Side Load

Tekonsha Shur-Set III Trailer Breakaway Kit - Side Load

Item # 20005
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Trailer Breakaway Kit
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Tekonsha Trailer Breakaway Kit - 20005
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Breakaway system is designed to bring your trailer safely to a stop by activating its electric brakes should it become disconnected while being towed. Rechargeable battery is included. Mounting hardware not included. Great Prices for the best trailer breakaway kit from Tekonsha. Tekonsha Shur-Set III Trailer Breakaway Kit - Side Load part number 20005 can be ordered online at or call 1-800-496-5010 for expert service.
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Tekonsha Trailer Breakaway Kit - 20005

  • Kit Only
  • Tekonsha

Breakaway system is designed to bring your trailer safely to a stop by activating its electric brakes should it become disconnected while being towed. Rechargeable battery is included. Mounting hardware not included.


  • Breakaway system activates your trailer's electric brakes if the trailer disconnects from the tow vehicle
  • Side-loading case is easy to access from the side
    • Polymer construction protects battery from moisture and debris
    • Mounting hardware not included
  • Lockable lid deters theft (padlock sold separately)
  • Breakaway switch installs on your trailer's frame - drilling is required
  • Department of Transportation (DOT) compliant
  • 12-Volt rechargeable battery is included
    • Battery charger sold separately (2024-07 and 2025-09)


  • Application: single-, tandem-, triple-, and quad-axle trailers with electric brakes
  • Case dimensions: 6" long x 2" wide x 8" tall
  • Mounting hole spacing:
    • 7" From center of hole to center of hole horizontally
    • 3" From center of hole to center of hole vertically
  • Battery capacity: 5 amp-hours
  • 1-Year limited warranty

Note: A breakaway system is required by law in most states for trailers that are equipped with electric brakes and have a GTW of at least 3,000 lbs.

20005 Tekonsha Lockable Breakaway Kit - Side Load - 5 amp/hrs

Video of Tekonsha Shur-Set III Trailer Breakaway Kit - Side Load

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

Video Transcript for Tekonsha Trailer Breakaway Kit - Kit Only - 20005 Review

Today were going to review part number 20005. This is the Tekonsha Shur Set III lockable trailer breakaway kit. This breakaway kit features a rechargeable sealed maintenance-free battery for trouble-free towing. The breakaway kit is designed to bring a trailer safely to a stop by activating the trailer breaks should a trailer disconnect from the tow vehicle during transit. Ideally, the safety chains will prevent a trailer from disconnecting if the coupler comes off the ball, however, if the safety chains fail, the breakaway kit acts as a last line of defense against a runaway trailer, and this type of safety system is required in most states for trailers weighing more than 3,000 pounds. We do recommend to check your local state regulations for what the rules and laws are in your state.

The breakaway switch right here is mounted to the trailer frame, has a cable right here that connects to the vehicles frame, and if the trailer disconnects this cable pulls the pin out of this switch and then this switch will activate, being hooked up to the battery here, it will activate the trailer brakes to keep the trailer from running away. Now, this is a very compact design. It includes the nylon breakaway switch. Now a battery charger is not included with this part number, but we do sell one separately. It would be the part number 1024.

Thats the Tekonsha battery charger for this trailer breakaway system. Now this breakaway kit has a wide operating temperature. It ranges from a -76 degrees to 140 degrees Fahrenheit. This does meet or exceed the DOT regulations, has a durable battery housing which is lockable right here you can see on the top the cover has a tab with a hole in it that would line up. Right in here is the rechargeable sealed maintenance-free 12 volt battery as you can see right here, positive posts and negative posts.

That would just drop into place and then you would just close the lid and put a padlock through here. We do sell padlocks separately. As you can see these mounting tabs right here, this is a side mount screw-on box. Now when you do install this, you would mount this battery case securely to the frame or any other suitable location on the trailer that will allow this switch to be towards the tow vehicle. Now the switch location should be selected to insure an unobstructed line of pull in the event of a vehicle separation.

Now you do bolt this breakaway switch bracket to the frame of the trailer and what you want to do is, theres the hole right here in the bracket. When you tighten that bolt down you dont want to over tighten it because the switch you do want it to be able to pivot just in case it gets in a different direction it will still have a direct pull to pull that pin out of the switch. Basically what you would want to do is the back of this breakaway switch has two black wires coming out of it doesnt matter which ones used for which. What you would do is one of these would go using the included connectors as you can see right here. Youd put a connector on one of these and one of the wires would go to the positive post of this battery. The negative post you would ground to the trailer frame. Now this other black wire you would use and splice this into the brake output on the electrical connector on your trailer. You would just splice one of these wires into the brake output so it activates your trailer brakes. And that should about do it for the review on part number 20005, the Tekonsha Shur Set III lockable trailer breakaway kit.

Customer Satisfaction Score:

Customer Reviews

Tekonsha Shur-Set III Trailer Breakaway Kit - Side Load - 20005

Average Customer Rating:  4.9 out of 5 stars   (10 Customer Reviews)

Breakaway system is designed to bring your trailer safely to a stop by activating its electric brakes should it become disconnected while being towed. Rechargeable battery is included. Mounting hardware not included.


Removed old system and with 15 minutes installed the new system from you guys. Works Awesome. I will keep your site in mind for future trailer/towing needs

Awesome, no problem hooking it up and has worked great..
Phillip - 09/13/2020


All the products I have purchased from Etrailer have been good. Quailty, durable products, fast shipping and easy transactions. has pretty much any product you need for your trailers. Thank you Etrailer!


Have not installed it yet so I can't review the product. I can tell you that etrailer's customer service is top notch. I called about a shipping delay after I placed my order. They assured me it would only be a day and not a week like my order confirmation said. Called back the next day and my order was already shipped. Good people to do business with.


Excellent products just what needed, thank you


Worked great.







See what our Experts say about this Tekonsha Trailer Breakaway Kit

  • Recommendation for Breakaway Kit to Replace my Tekonsha Shur-Set III Breaking System
    The Tekonsha Lockable Breakaway Kit, # 20005, is going to be the closest replacement that we have for your Tekonsha Shur-Set III Braking System. This breakaway kit features a rechargeable, sealed, maintenance free battery. I am also including a link which includes all of the Tekonsha breakaway kits that we have available.
    view full answer...
  • Availability of Pulley Block with Weight Capacity of 10,000 Pounds
    We have the just the pulley block for you. Take a look at part # BDW20005. This pulley block has a capacity of 17,000 lbs and is designed to be used with winches that have a rated line pull up to 7,000 lbs. You can remove the hook and connect to an eye if needed. I have attached a link to a product review video for this pulley you can check out.
    view full answer...
  • Will Pulley Block, part # BDW20005, work with Smittybilt 10k winch?
    The Winch Pulley Block, part # BDW20005, will work with winches that have 5/16-inch thick wire rope. So as long as the weight capacity and wire rope thickness match up, you should be fine.
    view full answer...
  • Triple Axle Breakaway Kit Recommendation
    We have a good solution with the the Tekonsha Shur-Set III Trailer Breakaway Kit part # 20005 but the Bright Way Trailer Breakaway Kit with Switch part # 3802339 is not rated for more than two axles.
    view full answer...
  • Recommended Breakaway Kit for Trailer with Eight Electric Brakes
    Since you have eight electric brakes, I recommend a heavier-duty breakaway kit that is compatible with quad-axles. You will need one with enough amperage to be able to apply the trailer brakes on full for at least 15 minutes A great option is the Tekonsha Shur-Set III Trailer Breakaway Kit with Built-In Battery Charger # 2028. This one is top-loading, but you can get the side-loading version # 20005 if you want. This is compatible with trailers that have 1-4 axles. I attached a review...
    view full answer...
  • Recommended Pulley Block To Use With Offset Winch On Trailer
    You can use a pulley block like part # BDW20005, to pull your car on to a trailer with the winch being offset. You will want to make sure the winch is well secured for safety. This pulley block has a capacity of 17,000 lbs break strength and is designed to be used with winches that have a rated line pull up to 7,000 lbs working load. I have attached a drawing that shows how to attach a pulley when offsetting the winch. I have attached a link to a product review video for this pulley...
    view full answer...
    Image 1 for
  • How Could a Pulley Block Be Used to Slow Down Plow Blade From Raising and Lowering
    A pulley block like the part # BDW20005 will reduce the speed of a winch by 50 percent when used. I attached a picture that shows how one normally gets used in a more traditional application. Basically you attach the pulley block to the object that is getting moved (in your case the plow blade), and then you route the cable through it and back to the same area as where the winch is installed. This slows the pulley down and also increases capacity. We don't have a specific recommendation...
    view full answer...
    Image 1 for
  • Snatch Block to Use with Bulldog Winch part # BDW15020
    The Bulldog Winch Snatch Block # BDW20005 would work great with the Bulldog Winch part # BDW15020 as it has more than enough capacity and was designed for use with synthetic rope like the winch has.
    view full answer...
  • Winch Capacity Needed To Pull 4000lb Vehicle Into Enclosed Trailer
    A Superwinch LT2500 has a 2500 lb line pull capacity. For a rolling load like a car with fully inflated tires, a winch with a capacity equal to the weight of the vehicle, in your case 4000 lbs is recommended. This means that your winch has about half the needed capacity to pull that vehicle up a 12% slope into the trailer. If a pulley block like # BDW20005 is used, you'll effectively double the capacity of your winch which would do the trick for you and allow you to load the trailer, but if...
    view full answer...
  • Is There Trailer Breakaway Kit With Solar Charger
    You can add a solar charger separately to a trailer breakaway kit, but there isn't a kit with an included solar charger. So there are a couple of options for you to add a charger to the Tekonsha Shur-Set III Trailer Breakaway Kit - Side Load # 20005. What you can do is add either the Bright Way Solar Battery Charger # BRW54FR or 2.5-Watt Solar Battery Charger # PTW2997.
    view full answer...
  • Electric Trailer Winch Recommendation for Hauling Car into Enclosed Trailer
    The Bull Dog Utility Winch, # BDW15020, is a great choice for the application.. This winch is designed primarily for race car trailers, open and enclosed and will control the cable feed in and out so you could stop the vehicle at any point when loading and would not have to worry about a runaway vehicle when unloading. For installing the winch in the trailer it is hard to make a recommendation without seeing the trailer and framing under the trailer. You can mount the winch in any location...
    view full answer...
  • Recommended Winch To Pull A 2000 lb Pontoon Boat Up A 45 Degree Incline Transitioning To 30 Degrees
    For this application, I reached out to my contact at Bulldog Winch and we came up with what we believe is what you will need based on the information you gave me. There are many factors involved here, so we are trying to cover all the bases for you and make it easy. I will give you our recommendation for using the oak tree to mount the winch, and using the 4x4 truck to power it. I recommend the Bulldog Winch Standard Series Off-Road Winch - Wire Rope - Roller Fairlead - 8,000 lbs, #...
    view full answer...
  • Rubber Versus Steel Brake Lines for Electric Over Hydro Conversion on Single Brake Axle Trailer
    As an installer, I much prefer rubber lines as they are easier to use. The steel lines are more durable but I can't say I've ever had a trailer we worked on come back with a broken rubber hose either. The steel lines are very hard to work with and if you want it to look decent you'll have to cut the lines to your exact length and flare on the fittings again. If you're experienced with brake lines and have the time to do it right and make it look nice then the steel lines work well but even...
    view full answer...

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Info for this part was:

Employee Lindsey S
Updated by:
Lindsey S
Employee Brian T
Updated by:
Brian T
Employee Kathleen M
Installed by:
Kathleen M

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