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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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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. Lowest 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 etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (9)
  • Q & A (3)
  • Videos (1)
  • Photos
  • Why etrailer?

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 Reviews

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

Average Customer Rating:  4.9 out of 5 stars   (9 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.

- 20005

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

- 20005

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

- 20005

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.

- 20005

Excellent products just what needed, thank you

- 20005

Worked great.

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Ask the Experts 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...
  • 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...

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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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