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Hopkins Engager Push-To-Test Trailer Breakaway Kit w/ Built-In Charger - Side Load - 7" Wire

Hopkins Engager Push-To-Test Trailer Breakaway Kit w/ Built-In Charger - Side Load - 7" Wire

Item # 20099
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Trailer Breakaway Kit
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Hopkins Kit with Charger - 20099
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Breakaway system with built-in charger is designed to bring a trailer safely to a stop by activating its electric brakes should it become disconnected while being towed. Push-button tester lets you know if the rechargeable battery is fully charged. Lowest Prices for the best trailer breakaway kit from Hopkins. Hopkins Engager Push-To-Test Trailer Breakaway Kit w/ Built-In Charger - Side Load - 7" Wire part number 20099 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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Hopkins Trailer Breakaway Kit - 20099

  • Kit with Charger
  • Hopkins
  • Side Load

Breakaway system with built-in charger is designed to bring a trailer safely to a stop by activating its electric brakes should it become disconnected while being towed. Push-button tester lets you know if the rechargeable battery is fully charged.


Features:

  • Breakaway system activates your trailer's electric brakes if the trailer disconnects from the tow vehicle
  • Push-to-test battery feature offers fast and easy battery testing
    • Test button with LED lights clearly displays battery status
      • Green = charged
      • Yellow = charging
      • Red = low battery
  • Built-in charger automatically refuels battery while trailer is connected to tow vehicle
    • Charges at 1/2 volt below voltage supplied by tow vehicle to prevent over-charging
    • Shut-off feature activates when battery is fully charged
  • Side-loading case is easy to access from the side
    • Weather-resistant construction protects battery from moisture and debris
    • Self-tapping screws included for simple mounting on your trailer's frame
  • 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


Specs:

  • Application: single- and tandem-axle trailers with electric brakes
  • Case dimensions: 4-1/8" long x 5-5/8" wide x 5-1/8" tall
  • Battery capacity: 5 amp-hours
  • Mounting hole spacing:
    • 1-1/2" From center of hole to center of hole horizontally
    • 7/8" From center of hole to center of hole vertically
  • Lead wire length: 7"
  • 90-Day 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.



20119 Hopkins Engager Break Away System with LED Battery Monitor and Charger - Side Load - 5 amp/hrs - 7" Wiring

20099

Installation Details 20099 Installation instructions


California residents: click here



Customer Reviews

Hopkins Engager Push-To-Test Trailer Breakaway Kit w/ Built-In Charger - Side Load - 7" Wire - 20099

Average Customer Rating:  4.8 out of 5 stars   (355 Customer Reviews)

Breakaway system with built-in charger is designed to bring a trailer safely to a stop by activating its electric brakes should it become disconnected while being towed. Push-button tester lets you know if the rechargeable battery is fully charged.

- 20099
by:

I bought this brake away system one year ago and have had zero issues. I like the display and the test button still works. Great product, this trailer lives outside uncovered..so far so good. 596745



- 20099
by:

The Hopkins battery box and break away switch showed up in record time with a fully charged battery. I also purchased a 7 blade plug / 24' 7 wire / 2 termination boxes. My old horse trailer has 18 various lights, some always hot, some on toggle, some running lights, stop and turn signals. I used 2 term boxes, front and rear, to help me in chasing future shorts but couldn't find a termination box at my local store. Etrailer had everything I needed to complete my project. I'm looking forward to purchasing trailer tires/rims from this company. The prices can't be beat, assuming free shipping. 489356



- 20099
by:

Very good product. Easy to follow instructions with all necessary hardware included. This is my second unit--have had one installed on another trailer for over 12 years now--still works great! 224784


Comments
Still working great!
Gary W - 09/09/2016

20861

- 20099
by:

The product itself was fine. However, no instructions were included. It would be nice to have those for reference. 820152



- 20099
by:

Fast shipping 790566



- 20099
by:

it works great as far as I know. Dale 787373



- 20099
by:

This is a very good product.We have it on a goose neck horse trailer.Would buy it again 785302



- 20099
by:

Reasonable prices and fast shipping. Good quality parts, can’t ask for anything more than that 784682



- 20099
by:

awesome product works great and an amazing place to deal with they go the extra mile to make sure you have a great experience 783769



- 20099
by:

Great products. Installed fairly easily and functioned as advertised. 782071



- 20099
by:

No problems so far. 778537



- 20099
by:

Worked perfectly.... follow the instructions and boom.... yer good to go. 771977



- 20099
by:

Product as described. fast delivery 756504



- 20099
by:

No directions Googled so no biggee 740083


Comments
I have attached a link to the installation instructions for you.
-- Tyler M - 02/13/2020

66659

- 20099
by:

The material arrive on time, and was as described. They have been installed and are operating fine. Thanks for you aid in this. 710935



- 20099
by:

Easy to install looks like good qualit y. 698066



- 20099
by:

Everything was what I expected. Very pleased with the parts and the amount of time for delivery. 683914



- 20099
by:

I had made several purchases from Etrailer and I have always got great parts service and fast shipping. We all work hard in life to be able to enjoy our hobbies. Rather it be Camping, hauling your race car to the track or keeping your work trailers in good working order. It is nice to have a company that is there to help you maintain your equipment in a economical, knowledgeable,and friendly way. If you are looking for advice,quality parts and trustworthy service look no further. Thanks Will and etrailer for helping me get me rig back on the road and safer. You guys are the best! 683547



- 20099
by:

Great price and good customer service 680825



- 20099
by:

Everything was as described. Fit as it should very happy with shopping speed and quality of products. 680540



- 20099
by:

All my ordered parts arrived have not installed yet but so far perfect experience. 679681



- 20099
by:

nice product, easy to install, works gr eat 673738



- 20099
by:

Good service, order received quickly and in good condition. Products ordered were as advertised and recommended. 668198



- 20099
by:

Still working perfect 1 year later. 665774



- 20099
by:

The only reason I do not give you 5 stars is because your web site. When internet ordering, it should instantly state when a part is out of stock. Even nicer would be expected restocking dates. The parts received were exactly what I ordered for my electric brake conversion from surge brakes at far less expense than reparing the internally rusted surge brake system. There was a plethora of information on your web site to assist me in ordering the correct parts for the conversion. Plus there were videos to see how to complete the conversion and how parts were installed and adjusted. Customer service was excellent. 659639


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Show More Reviews

Ask the Experts about this Hopkins Trailer Breakaway Kit

  • Recommended Trailer Breakaway Battery Braking System with Integrated Charger
    The Hopkins Engager Push-To-Test Trailer Breakaway Kit w/ Built-In Charger - Side Load - 7" Wire # 20099 is the most popular option by far followed by the top loading version # 20400. This is my recommendation for the best option. Many trailer manufacturers utilize this breakaway kit because of its function and ease of use. I've attached a photo to assist with the installation.
    view full answer...
  • What is the Difference in Hopkins Engager Breakaway Systems 20099 and 20400
    Hopkins Engager breakaway systems # 20099 and # 20400 function the same way and have the same features. The main difference is in how they mount. Engager # 20099 is meant to be mounted on top of the frame with the LED indicator and test button facing up. Engager # 20400 was meant to be mounted to the side of the trailer frame so that its LED indicator and test button are also facing up. You will want to make sure the battery in the system you use is protected. That is why breakaway systems...
    view full answer...
  • Troubleshooting Trailer Breakaway Wire That Didnt Activate Trailer Brakes
    It sounds like you had not just a breakaway pin pulled but a wiring issue. If not, the breakaway wasn't connected to your trailer correctly as the brakes should be activated but the trailer tail lights wouldn't be. To me it sounds like the pin is connected to the brake lights and not the brake magnets. I've attached an article to help with the connections and have also attached a couple videos and a diagram. It sounds like you may need the Hopkins Replacement Break-Away Switch, 7"...
    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...
  • Wiring Directions for Hopkins Engager Push-to-Test Trailer Breakaway Kit
    The wiring directions for the Hopkins Engager Push-To-Test Trailer Breakaway Kit # 20099 referenced in your question are as follows: 1. Splice one blue wire of the Break-Away Switch to the electric brake wire coming from the trailer side connector. 2. Connect other blue wire of Break-Away Switch to the blue wire (labeled Brake) from the Break-Away box (Note: Blue wires are interchangeable on the Break-Away Switch.) 3. Splice white wire from Break-Away box to existing ground wire on...
    view full answer...
  • Yellow Charge Light On Hopkins Engager Stays On with Trailer Disconnected
    In regards to the Hopkins Engager Push-To-Test Trailer Breakaway Kit part # 20099, the first issue that you described of the yellow charge light being on even while disconnected from the tow vehicle could either be a short in the circuit board or if the trailer has an auxiliary battery this is then feeding the breakaway battery and in which case you would need to install a diode part # RM-690 to prevent this. The issue with the yellow charge light illuminating when the battery test button...
    view full answer...
  • Should Trailer Brakes Hum While the Breakaway Pin Is Pulled
    Yes, when the pin on a breakaway system like the Hopkins Engager Push-To-Test Trailer Breakaway Kit part # 20099 is pulled that then sends full 12 volt power to the trailer brakes. When power is sent to an electric braking assembly you may very well hear sort of a humming noise and this is not uncommon at all nor it is an indication that a problem is present.
    view full answer...
  • Do Trailer Brakes Lock Up When Brakeaway Kit is Activated
    When the Hopkins Engager Push-To-Test Trailer Breakaway Kit w/ Built-In Charger # 20099 gets activated, your trailer brakes will immediately lock up. It sends the full 12 volts to your brakes to stop the trailer as soon as possible. This is assuming, of course, that the breakaway battery is fully charged, which should not be an issue with this kit due to its built-in battery charger. I have added a link to a video review of this kit for you to take a look at as well as a couple help...
    view full answer...
  • How to Prolong Life of Breakaway Battery During Winter Storage
    You could potentially store the Hopkins Engager Breakaway Kit # 20099 battery inside but that would only protect it from the colder temperatures, so you would still need a solution to re-charge it, and there really isn't an easy way to remove it without having to cut some wires or unscrewing it from the trailer frame. A better and simpler solution is to use a battery charger/maintainer, like the NOCO Genius UltraSafe Battery Charger and Maintainer # 329-GENIUS1. It will work great to...
    view full answer...
  • Is a Breakaway Kit Required on an Old Trailer
    In order to determine if a breakaway system is required on your trailer you will need to contact your local DMV. This will vary from state to state. However, it is a good ideal to add a breakaway system regardless of your state's regulations as they will help to protect others on the road and your trailer in the event of an accident. Breakaway systems are relatively inexpensive and can easily be installed with minimal effort. I recommend the Hopkins Engager Push-To-Test Trailer Breakaway...
    view full answer...
  • Comparing Hopkins Engager Breakaway Kits 20400 and 20099
    Pretty much the only difference between the Engager breakaway systems # 20099 and # 20400 are the designs of the battery boxes. Both function the same and have the same features. Engager # 20400 is meant to be mounted to the side of the trailer frame whereas # 20099 is designed more from the top of a frame. But ultimately you could install them anywhere there is space so I wouldn't say one is better than the other for you trailer.
    view full answer...
  • Comparing Trailer Breakaway Battery Kits Side Load from Hopkins and Tekonsha
    The tow vehicle brake controller
    view full answer...
  • Can Breakaway Battery be Overcharged By 12V Circuit From Tow Vehicle 7-Way
    You can definitely use the 12V power from the tow vehicle's 7-Way connector to maintain the charge of your trailer breakaway battery. This circuit from the 7-Way carries enough power to maintain a battery but not enough to actually charge up a depleted one. With this in mind you do not need to worry about overcharging the battery as it will really only get a trickle-type charge during travel.
    view full answer...
  • How to Wire Up a Breakaway Battery and an Auxiliary Battery on a Trailer without Backfeeding
    It sounds like the tilt battery is backfeeding onto the breakaway battery charge line so as long as the ground is connecting it is taking a charge from the tilt battery and that is why your charge light is staying on. I have a solution for you, you will need a single function diode part # RM-690. You will need to wire it in between the breakaway battery and the tilt battery and it will stop the backfeeding from your tilt battery to the rest of the 12 volt circuit wiring of your trailer. Check...
    view full answer...
  • Installation Instructions For Hopkins Engager Trailer BreakAway Kit
    I have attached the installation instructions for the Hopkins Engager Trailer BreakAway Kit, part # 20099. This kit includes a charger and an LED tester and will work with single and tandem axle trailers. I have also attached a link to an installation video for this kit you can check out. I attached a link to a drawing that shows how the wiring is run when you install the breakaway kit.
    view full answer...
  • Can a Diode be Used to Prevent Back Feeding from a Trailer Breakaway Battery to a Brake Controller
    You could install parking light diode # RM-690 to allow power to only flow in one direction and that would prevent accidental back feeding. The diode is rated for 85 amps on a 12 volt system.
    view full answer...
  • Could Trailer Breakaway System be Used as Parking Brake
    Breakaway systems should not be used as a parking brake. Typically they only hold the brakes of the trailer for about 10 minutes at max application. Since you have electric brakes you'd want to look into a wheel chock type setup to keep the trailer from moving when parked like the Buyers Products Wheel Chock Set # 337WC24483. This would be the safest way to prevent the trailer from moving. Check out the review video link I attached for more info as well.
    view full answer...
  • Guide to Use to Test Trailer Brake Magnets
    Sounds like your brakes aren't working when you use the breakaway kit or when your tow vehicle applies the brakes which leads me to believe the problem isn't the breakaway and it's most likely electrical. I attached a link to a page that details how to test to see if the brake magnets are bad for you to check out. Try that and let me know what you find.
    view full answer...
  • Availability of Replacement Battery for Hopkins/TAP Engager Trailer Break Away System
    We do indeed offer a 12-Volt, 5 aH replacement battery for your Hopkins/TAP Engager trailer break away system. The battery is part # HM20008.
    view full answer...
  • Will the Hopkins Engager Trailer Breakaway Kit Keep Charging the Battery with the Truck Turned Off
    First it is important to know that the battery on the Engager break away kit # 20099 will only be charging as long as the 12 volt circuit is providing power. If you shut off the vehicle and disconnect the trailer it will not be charging. When there is power it will continue to provide a maintenance charger to the battery to keep it at or near full power. You would want to disconnect the trailer from the vehicle if you do not want it to draw power from the vehicle battery when the truck...
    view full answer...
  • How to Recharge the Battery on Hopkins Engager Breakaway Kit With Built-In Charge
    Since the red light comes on with your Hopkins Engager Push-To-Test Trailer Breakaway Kit w/ Built-In Charger # 20099 it means the battery does not have the proper charge, and thankfully this is very easy to remedy. All you have to do, as evidenced by the cut out of the linked instructions I added, is connect your trailer plug to your tow vehicle. After about 20 minutes or so the battery on the Engager will be charged and you'll be set.
    view full answer...
  • Where on Tow Vehicle to Install Trailer Breakaway Cable
    The cable on a trailer breakaway kit such as the Hopkins Engager # 20099 should not be attached to the trailer safety chains but rather it should be connected to the vehicle bumper or frame. Please refer to the linked articles for more on breakaway systems and their installation.
    view full answer...
  • Troubleshooting Engager BreakAway Kit # 20099 When Battery Is Overheating
    I spoke with my contact at Hopkins about the Engager Trailer BreakAway Kit, part # 20099 you are using on your Airstream. They told me that the battery being so hot is an indication that either the battery is bad, or there may be an issue with the circuitry on the breakaway unit. You will want to make sure the installation to your 12 volt power source has been completed as the instructions state. The white wire should be grounded to a clean bare metal surface on your trailer. The black...
    view full answer...
  • What is the Expected Life of a Trailer Breakaway Battery During Winter Months
    Typically, if your trailer is exposed to the elements, the breakaway battery should last at least a full season. There are many variables that can affect a batteries life expectancy. The Engager trailer breakaway # 20099 includes a built in battery charger as is stored inside a weather resistant battery box. The LED tester, when depressed, will advise you if the battery is fully charged and/or needs charging. Most instances the battery can be fully charged in 20 minutes. Another thing...
    view full answer...
  • How to Wire a Breakaway Switch to the Trailer Battery
    In order to install a two wire breakaway switch like the Replacement Breakaway Switch with Cable and Pin part # 54-85-007 to an existing trailer battery you will want to attach one of the wires to the brake output signal (usually blue) on the trailer and the other wire to the trailer battery. The wires are non-polarized so it doesn't matter which wire is attached to battery/brake output signal. However, most states require that the breakaway switch be wired to a separate independent...
    view full answer...
  • Troubleshooting Engager Trailer Breakaway System That Keeps Brakes Engaged
    It sounds like you have a short in your Engager breakaway kit's wiring that is allowing the breakaway battery's power to reach your brakes even when it should not. With the plunger in place there should be no power going to the brakes. There is likely to be some wiring that is shorted to the trailer frame that is letting the battery power bypass the switch and reach the brakes. You will need to inspect and either repair or replace any damaged wiring. Look for wires with worn or cracked...
    view full answer...
  • Where Should the Ground Wire be Attached for a Trailer Breakaway Battery
    You will likely have several different grounds on any given trailer. The breakaway battery can ground by itself to the frame and to the trailer connector's ground if you want. But at the very least ground the battery to the frame. The brake magnets should be grounded independently near the magnets (axle or frame) for the best results. As long as the breakaway battery is grounded to the trailer frame and the magnets are properly grounded it will work should the trailer separate from...
    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...
  • How to Wire the Engager Breakaway Kit to Charge the Breakaway Battery
    The black wire on the Engager breakaway system # 20099 will be connected to a 12v auxiliary power wire coming off of the trailer connector. This wire is typically the number 4 black terminal in the 7-way connector, but you will need to test to determine if your plug is wired this way, as the auxiliary function can also be located on the center pin. Installing the black wire from the breakaway system to the 12 volt power source will allow the battery to charge when you have the trailer...
    view full answer...
  • Hopkins Engager Trailer Breakaway System Battery Will Not Charge
    Four years old is pretty old for a breakaway battery. Based on what you have described it could be a battery or the charger portion of the breakaway system. An auto parts store should be able to test the battery for you. There are different versions of the Engager breakaway system. You can replace the main box using # HM20121. The battery for it is # HM20008.
    view full answer...

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