Hopkins Agility Trailer Brake Controller - Plug In - 1 to 4 Axles - Proportional
Universal Wiring Adapter for Hopkins Trailer Brake Controllers

Part Numbers: HM47294,HM47685

Our Price: $142.17
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Hopkins Automatic Leveling Trailer Brake Controller - HM47294
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Hopkins Agility Trailer Brake Controller - Plug In - 1 to 4 Axles - Proportional
part number: HM47294

Proportional brake controller mounts easily. Digital display indicates braking action of trailer. Fine-tune power adjustment has 5 levels so that you can set braking intensity to suit your towing needs.


  • Brake controller activates trailer brakes in proportion to your vehicle's braking action
    • Automatically adjusts trailer's braking based on deceleration of tow vehicle
    • Activates immediately - no pausing like with time-delayed brake controllers
  • Recommended mounting is between -20 degrees and 70 degrees
  • 5 Sensitivity levels let you adjust initial braking power and aggressiveness
  • Digital display is easy to read
  • Built-in, slide manual override lever
  • Plug-in, vehicle-specific brake-control adapter is required for installation


  • Application: trailers with up to 4 axles (8 brake assemblies)
    • Designed for use with electric or electric-over-hydraulic trailer brakes
  • Dimensions: 3" wide x 5" long x 1-1/4" tall
  • Limited lifetime warranty

Proportional Braking

With a proportional brake controller, you can get heavy-duty emergency braking, general braking or slow-to-an-idle braking for your trailer automatically. The intensity with which your trailer brakes are activated and the rate at which they are applied are dependent on the deceleration of your tow vehicle. This means that, unlike time-delay controllers - which send the same amount of preset power to your trailer brakes every time - proportional controllers are able to adapt to every braking situation differently. So, if you slam on the brakes in your truck, your trailer brakes will activate with that same extreme intensity. And if you merely slow down as you approach a red light, your trailer will gradually brake in the same manner.

As long as the Agility controller sits level on a horizontal plane and is pointed in the direction of travel, it will sense - via an internal inertia sensor - how your tow vehicle brakes. This inertia-based sensor responds to the deceleration of your tow vehicle as you brake by signaling the controller to send out enough power to your trailer brakes so that they are activated with an intensity that matches. The result is uniform braking across your towing setup. No push-pull action - just smooth, proportional braking every time.

Power and Sensitivity Adjustment

Getting the braking power you need for your application is simple with the Agility. First, set the overall power so that you can achieve maximum braking without locking up your trailer brakes.

Once you have the overall power set, you can fine-tune the power output by adjusting the sensitivity of the internal sensor. Use the adjustment buttons on the top of the controller to achieve your desired degree of intensity. There are 5 levels to choose from. The first level offers the least amount of sensitivity, making it ideal for lightweight setups. The heavier your load, the higher you will want to take the sensitivity. At level 5, the sensitivity of the internal sensor is as high as it can go. This level provides the most aggressive braking and is ideal for heavy loads.

Digital Display

On the front of the Agility there is a digital display that is designed to keep you aware of the braking action of your trailer. This screen shows your sensitivity level, overall power percentage and error codes for issues such as a short circuit.

Simple Installation

The Hopkins Agility is recommended to be mounted in your cab at an angle that is between -20 degrees and 70 degrees to make it easy to access.

Correct Agility mounting90-Degree Agility mounting

Note: The Agility must be mounted on a level horizontal (side-to-side) plane and must be lined up with the direction of travel for the internal sensor to function properly.

To install the Agility, a vehicle-specific wiring adapter is required. These custom kits are available for most newer trucks and SUVs. One end of the custom adapter plugs into your vehicle, and the other end plugs into the controller - no hardwiring required.

See also etrailer.com's exclusive 7- and 4-way brake-control installation kit (ETBC7 - sold separately) if you don't already have a 7-way plug at the back of your vehicle.

47294 Hopkins Agility Proportional Trailer Brake Control - Plug-In Simple

California residents: click here

Universal Wiring Adapter for Hopkins Trailer Brake Controllers
part number: HM47685

Designed for applications that do not come equipped with a brake control wiring harness port from the factory, this adapter plugs into your Hopkins trailer brake controller at one end, and the other end splices into your vehicle's wiring.


  • Universal wiring adapter eases installation of your electric trailer brake controller
    • No need to wire brake controller directly to your vehicle
  • Wire end splices into your vehicle's wiring
    • Use on a vehicle that does not have a factory tow package or on one that has a brake control harness but is not equipped with a plug-in port
  • Connector end joins with the plug on your electric brake controller
    • Compatible with time-delayed and proportional brake controllers from Hopkins
    • Simple to plug and unplug control for removal
  • 2' Long, 12-gauge wires have protective covering to deter damage
  • 90-Day limited warranty

Installation of Hopkins Brake Controller Adapter

To install your Hopkins electric brake controller, you need to connect the wiring of the controller to your vehicle. Certain auto manufacturers offer pre-wired options, typically known as tow packages, wherein wiring is run for you from the dash to the trailer connector on the back of your vehicle. Usually when this is done, a port is installed at your dash so that you can easily plug in a brake controller. However, if no port is present, you will have to splice into your wiring.

With this universal adapter, you can install your Hopkins brake controller without having to wire the controller directly to your vehicle. If your vehicle has a factory tow package, just splice the pigtail end of the adapter into your vehicle's factory brake control harness wiring, and then plug the other end of the adapter into the controller. If your vehicle doesn't have a factory tow package, you'll have to hardwire the pigtail end of the adapter into your vehicle's wiring. Because only the adapter is hardwired to your vehicle, you can unplug and remove your brake controller at any time to transfer it to another vehicle or securely stow it away.

If your vehicle is not equipped with a factory tow package, you will need to purchase additional equipment to ensure that the signals from your brake controller are sent to your trailer's brakes. We recommend etrailer.com's exclusive 7- and 4-way brake control installation kit (ETBC7 - sold separately).

47685 Hopkins Universal Quick Plug Brake Control Adaptor Harness with Pigtail

California residents: click here

Customer Reviews

Hopkins Agility Trailer Brake Controller - Plug In - 1 to 4 Axles - Proportional - HM47294

Universal Wiring Adapter for Hopkins Trailer Brake Controllers - HM47685

Average Customer Rating:  4.8 out of 5 stars   (113 Customer Reviews)

Proportional brake controller mounts easily. Digital display indicates braking action of trailer. Fine-tune power adjustment has 5 levels so that you can set braking intensity to suit your towing needs. Designed for applications that do not come equipped with a brake control wiring harness port from the factory, this adapter plugs into your Hopkins trailer brake controller at one end, and the other end splices into your vehicle's wiring.

- HM47294
by: Harry07/12/2018

First I would like to say etrailer is a great company to work with, they made contact with me by phone no an email to let me know that my parts were bcaked ordered and if I I was pressed for time they would send another like unit ASAP. Though I haven't had the opportunity to try the brake control the wire harness I ordered for my 2002 chevy silveroda and Control went in with no problems 540714

- HM47294
by: Joe L.05/04/2013

Looking forward to many a miles use of the Hopkins Agility. Install was a snap ... recommend using sockets vs. a screw driver to secure the screws to the unit. 79000

- HM47294
by: Harold S11/04/2016

Good Quality product. Well written installation and usage instructions. 313669

- HM47294
by: Kevin r05/08/2017

This plugged right in and works great.i don't know how it could function any better than it does.its nice to be able to push a button and just use trailer brakes 378035

- HM47294
by: Frank B07/07/2017

Just finished installing my Hopkins brake controller with the plug in wire harness for my Toyota Tacoma. Couldn't have been simpler. Took about 10 minutes. Took longer to find the factory connector which was part of the tow package on my truck. Nice product, also reached out to the tech department last night around 11pm and had the answer this morning at 7:30 am. That's great service, could have gotten it a little cheaper through another site, mainly because of free shipping but quality service like this is worth plenty. If I need any trailer accessories again etrailer will be who I call. 403544

- HM47294
by: Kevin R.04/04/2018

etrailer.com made my product selection easy. They even showed the recommended wiring adapter without me having to search for it separately. This brake controller was easy to install and setup. This, in addition to a good price, made my purchase and installation easy. I would definitely choose them again for my camper and towing needs. 492582

Im still happy with my products that I purchased from you. Thanks for checking and and have a nice day.
Kevin R - 04/08/2019


- HM47294
by: Dennis05/11/2020

Positive 795719

- HM47685
by: David05/09/2020

works fine 794275

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by: Gary03/28/2020

Product arrived promptly. Appears as advertised, but I have yet to install it so can’t comment on its functionality. Have every reason to believe it will perform to expectations. If not, I will be mad as a wet hen. If it works, I will be happy as a lark. 772015

- HM47294
by: Lonnie03/25/2020

Very pleased with this product, works as advertised. 770635

- HM47294
by: Robert T03/25/2020

So easy a cave man can do it. Just plug and play with this one, I’ve always had the old style that had to have a line from the brake master cylinder to the controller. My only issue was where I installed it bumps my knee occasionally. 770322

- HM47294
by: Lawrence12/10/2019

Perfect for my install on the 2017 Nissan NV2500 Cargo van. Thanks! 732884

- HM47294
by: Ricky08/23/2019

very happy 693031

- HM47685
by: Michael08/14/2019

Easy hookup to my 2013 Suburban. Instructions and install video were spot on. Took me less than 1/2 hour and Brake Controller was working as it should. 687064

- HM47294
by: Cory Unrein07/16/2019

Doesn't work very well. Flickers on and off during driving. 671132

- HM47294
by: Thomas06/30/2019

Very nice product that is easy to install and use. 664920

- HM47294
by: Lloyd06/16/2019

Control mounted easily and the connector linked up with the connector under the dash perfectly and it works great! 658773

- HM47294
by: Matthew06/04/2019

I haven't used it yet, but the installation was simple as described on the web site. 653107

- HM47294
by: Gary02/14/2019

Easy install had plug and play 1984 f150. Easy to adj and works well 604954

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by: Paul11/08/2018

received very quick! i have not installed the controller yet but i'm sure i'll be very pleased as a good friend of mine has one and loves it. i've used his truck and my trailer to haul my skid loader and the hopkins worked perfect. 581291

its been a year since installing my hopkins brake controller and it works perfectly. i tow my bobcat on a 18 dove tail trailer and i cant believe how well it makes my truck and trailer slow down and stop. i highly recommend for a easy install and adjustability at a very good price
paul g - 11/13/2019


- HM47685
by: James09/10/2018

Easy hook up. 563545

- HM47294
by: George08/25/2018

Works just as good today as the day I bought it. Super simple installation, easy configuration, and it’s been rock solid reliable. 557966

- HM47294
by: Thomas08/24/2018

Easy install with vehicle specific cable. Probably took me 30 minutes taking my time. Took the trailer for a short ride and everything seems to function perfectly. Haven't taken an extended trip yet. Easy if you check out the etrailer install video first. 557603

- HM47294
by: Roy08/10/2018

Unit started up with no issues. The adapter cable plugged right in. Your install videos were right on. Thanks 552051

- HM47294
by: Daniel07/13/2018

Everything fit and functioned as promised. Thanks you. 541180

Show More Reviews

Ask the Experts about this Trailer Brake Controller

  • Using 7-Way 12V Power Circuit to Power Trailer LED Interior Lights
  • Yes, you certainly can use the 12V auxiliary power circuit on your 7-way wiring setup to power trailer lights. If you refer to the linked photo of a vehicle 7-way connector you will note that the 12V power circuit is carried on the contact at the 1:00 position as you look at the 7-way socket. This is noted by the yellow arrow. An easy way to access this 12V power circuit is to tap into it by using a junction box like # 277-000141. This box gives you a handy place to install a ring
    view full answer...

  • Brake Controller for 2008 Dodge 2500 Diesel Towing Heavy 12000-lb Trailer
  • I recommend going with the Hopkins # HM47294 which is a proportional brake controller with 5 adjustable power levels to handle even the heaviest tow loads. This controller works on trailers with up to 4 axles, so you'll be able to use it on most other trailers that you may need to tow in the future. The easy to read display shows how much power is being supplied to the brakes and the controller can mount easily under your dash, so it's out of the way yet still easy to access the manual
    view full answer...

  • Locating the Brake Controller Connector on a 2017 Ford F-150 to Install the Hopkins # HM47294
  • The Hopkins Agility Trailer Brake Controller # HM47294 will install in your 2017 Ford F-150 by using the Plug-In Adapter # HM47845. The adapter will plug into the connector which is installed behind a side panel between your steering wheel and your radio. You will need to disconnect the connector from that side panel (which is where an OEM controller would normally sit) and bring it to the underside of your driver side dash for installation. I have attached a video of the Tekonsha Prodigy
    view full answer...

  • Potential Causes for Continuous "Check Trailer Wiring" Warning Message on 2018 Chevy Silverado 2500
  • I appreciate your fighting spirit and your urge to get to the bottom of the issue behind the intermittent trailer connection warnings that appear on your 2018 Silverado that has a factory-installed trailer brake controller. But one of your comments caught my ear: "...they're barely, if at all, there..." I presume you are referring to the trailer brakes showing little or no actual stopping power; is this correct? The most obvious direction for my thinking on this is a simple connectivity
    view full answer...

  • Troubleshooting Brake Controller E2 Error Code
  • The Hopkins Agility Trailer Brake Controller # HM47294 you asked from is most likely too new to get that E2 code like the older models (it would be SC instead) according to my tech contact at Hopkins. With either the SC or the E2 code, it is showing a short in the blue output wire somewhere between the controller and the brake magnets. This can be due to a pinched or broken wire, a bad ground wire, or it could be from a bad magnet as you stated. I recommend using a circuit tester
    view full answer...

  • Troubleshooting Brake Controller that Locks Up When Brakes Are Touches
  • Normally the issue is a short between the stop/turn light circuit and the brake output, but since you said you have a Hopkins Reliance (ironically the least reliable brake controller) there is an equal chance the controller is in need of replacing. Try putting both blinkers and see if the trailer brakes pulse in unison. If so, the issue is the wiring short. If not, then the issue is the controller is bad and needs to be replaced. For a brake controller I would recommend the Prodigy
    view full answer...

  • Brake Controller Recommendation for a 2006 Dodge Ram 2500
  • The Mopar brake controller is identical to the one they put in at the factory on certain Ram trucks. It is made specifically to fit the trucks it was designed for. In the aftermarket options there is nothing that is going to fit the same but they are also much, much less expensive and actually work better than factory integrated controllers. I recommend the P2, # 90885, because it is easy to set up and use and it is reliable. You will also need wiring harness # 3020-P to plug the controller
    view full answer...

  • Installing Trailer Brake Controller on 2008 Chevy Express Van Cutaway Chassis
  • A Chevy Express cutaway chassis won't have the connector under the dash for installing a brake controller, so the controller will need to be hardwired. You'll first need to install a functioning 4-pole trailer connector on your vehicle, using the part # 18252 kit. Once the 4-pole is installed, you'd complete the install using our Brake Controller Installation Kit, part # ETBC7. The kit includes everything needed to complete your installation, but if your cutaway chassis is longer than
    view full answer...

  • Troubleshooting a Hopkins Agility Brake Controller on a 2006 Chevy Silverado 1500
  • If your trailer brakes actuate when you use the manual override, but not when you step on the brake pedal, you may have the wrong brake controller adapter. The correct adapter for your 2006 Chevy Silverado 1500 is Hopkins Plug-in Simple Brake Wiring Adapter, # HM47795. If you do have the correct adapter, make sure you have the red wire in the correct port. For your vehicle, you will put the red wire in the bottom left port (when the plug has the blue clip pointing up). See fig. 4 in the
    view full answer...

  • Wiring Adapter to Install Hopkins Agility Brake Controller on 2015 Toyota Tacoma
  • If your Tacoma has the factory installed 7-way trailer connector at the rear bumper, it will be equipped with the brake controller connector under the dash. The connector will be located above and to the left of the emergency brake pedal, above the kick panel, as shown in the provided photo. For the Hopkins Agility brake controller, you'd need their # HM47815 brake controller adapter. If the vehicle is NOT equipped with the factory installed 7-way, it will not have the under dash connector,
    view full answer...

  • Brake Controller Installation on 1995 Jeep Grand Cherokee With Factory 7-Way Trailer Connector
  • Sometimes Mopar used a light green wire, sometimes it was a blue wire. The fact that the wire you found has a tag on it positively identifies it as the brake output circuit. I'd recommend the # 5506 Brake Controller Install Kit. I've linked you to a video showing the kit being used to install a different controller on a 2000 Grand Cherokee. The procedure on your vehicle would be very similar. The brake stoplight switch wire you'll need to attach the red brake controller wire to would
    view full answer...

  • Wiring Adapter for a 2005 Nissan Frontier and Hopkins Agility Brake Controller Installation
  • Most likely, the 5th wire is for illumination. None of the brake controllers we sell have this feature. But it is not needed to install a brake controller, including the Hopkins Agility Trailer Brake Controller, # HM47294. The wires on the Reliance brake controller are as follows: White is the ground. Blue connects to the trailer brakes via a 7-Way connector. And Red is the stop light that connects to the switch at the top of the brake pedal. Black is the 12 volt hot lead. The simplest
    view full answer...

  • How to Install a Brake Controller on a 2007 Ford Explorer with a 4-Way Factory Connector
  • You can use that factory port for the brake controller, however, there is no 7-Way kit available for the 2007 Ford Explorer with factory 4-Way. You will have to find were the blue wire for brakes terminates. From our experience it terminates in a harness behind the driver side wheel well or behind the door. You will need to route a length of wire # 10-1-1 from this point back to the # 37185 blue wire. The black wire will need to be routed under the vehicle and to the positive battery
    view full answer...

  • Troubleshooting Factory Integrated Electric Brake Controller on 2008 F-350
  • It sounds like the brake controller is working properly and is acting normal. The factory integrated brake controller on your 2008 Ford F-350 Diesel is a proportional brake controller. It applies the brakes to the trailer in the same intensity and time as your truck, however there's a small amount of voltage constantly running through the circuit so your F-350 can detect if the trailer is hooked up or not. So with truck was sitting still and the engine running, you should not have any
    view full answer...

  • Replacement Brake Controller Recommendation for Hopkins Impulse that Doesn't Adjust Intensity
  • Since you have a Hopkins Impulse brake controller which has a reputation as not being the most reliable option out there your best solution is going to be replacing the controller as what you described sounds like an internal problem. For a brake controller I would recommend the Prodigy P3 Brake Controller part # 90195. This is our best selling brake controller because of how well it works and how easy it is to setup. This is a proportional brake controller that senses the amount of
    view full answer...

  • Recommended Wiring Harness for 2017 Toyota Tacoma to Install Hopkins InSIGHT Brake Controller
  • For your 2017 Toyota Tacoma, the Hopkins InSIGHT Flex-Mount Trailer Brake Controller # HM47294 is a great option. There is a wiring harness made specifically for this fit. It is part # HM47816. I've attached a video of this installation on a Tundra to give you an idea of the fit. The Tekonsha wiring harness is only a fit for Tekonsha and Draw-Tite brake controllers.
    view full answer...

  • Brake Controller And Plug-In Harness For 2015 E-350 Ford Motorhome
  • I called my contact at Hopkins and they told me that the Hopkins Agility Trailer Brake Controller, part # HM47294 will work well with your 2015 E350 Ford Motorhome. For ease of installation the plug-in connector I recommend is part # HM47855. You simply plug one end into the back of the controller and the other end into the factory-installed port located under the dash. I have attached links to a couple of product review videos you can check out.
    view full answer...

  • Hopkins Trailer Brake Controller Shows 4.5 Volts All the Time on a 1992 Chevy C/K1500
  • Brake controllers do send back minimum voltage to detect a trailer but not 4.5 volts constantly. It sounds like there is a short somewhere or perhaps the red wire is not connected to the correct brake switch wire. That is where I would start. Use your tester to test the wire that the brake controller red wire is attached to. It should only have power when the brake pedal is pressed and not also when the headlights or turn signals are on. If that is correct then to test the controller
    view full answer...

  • Troubleshooting Hopkins Agility Brake Controller
  • I spoke with my contact at Hopkins and they told me there are a couple of things you can check on your Hopkins Agility Trailer Brake Controller, part # HM47294. The first thing to check is the red wire the brake controller is attached to. If it shows current all the time then there is a problem with the wiring. This should only show current when the brake pedal is pressed. Next, check the manual override switch. If it has somehow become stuck or engaged it could give you the reading
    view full answer...

  • Brake Light Switch Wire Color to Install a Brake Controller on a 2015 Jeep Wrangler Unlimited
  • On the 2015 Jeep Wrangler Unlimited the brake switch wire should be a white wire with a brown stripe. Use a circuit tester such as # 40376 to test the wire to make sure it is the one that only has power when the brake pedal is pressed.
    view full answer...

  • How To Wire Brake Controller To Wires Under Dash That Are Cut On 2004 Dodge Ram Factory Tow Package
  • The information that I have indicates that for the 4 wires under your dash, there should be a red-and-tan wire, a green wire, white-and-red wire, and a black wire. You will need to connect the red-and-tan wire to the Black wire of the brake controller. You will connect the green wire to the Blue wire of the brake controller. The white-and-red wire will connect to the Red wire of the brake controller. The black wire will connect to the White wire of the brake controller. To connect the
    view full answer...

  • Wiring Harness to Install Hopkins Impulse Brake Controller in a 2018 Toyota 4Runner w/Tow Package
  • I did some checking and the 2018 Toyota 4Runner uses the same brake controller wiring harness as the previous 2 model years. That means you can use # HM47815 with your Impulse brake controller. But, I actually recommend a different approach because the factory ground on the Toyota tow packages where a brake controller plugs in has proven to be insufficient for many brake controllers. I propose using harness # 3041-P which has a separate ground wire to combat that issue. You would have
    view full answer...

  • Installation of Trailer Brake Controller in 2000 Chevy Express 3500 Van
  • The Universal Wiring Adapter for Hopkins Trailer Brake Controllers # HM47685 you asked this from will allow you to connect a wiring harness to your Hopkins brake controller (if that is what you have) to give you the wire leads to splice into your brake light switch and connect your power wire to battery and brake output wire to your 7-way. The ground can be connected to a local ground wire or can be directly connected to your body in a metal on metal location. You will then use kit #
    view full answer...

  • Recommendation for Wiring Adapter for the Hopkins # 47284 on a 2011 GMC Sierra
  • I have good news for your brake controller adapter needs. If you already have the Hopkins # HM47284 brake controller, you will need the universal wiring adapter # HM47685. Also if your vehicle already has the factory 7-way you will most likely have a factory bundle of wires under your dash by your left shin that we can splice into for this brake controller. According to my information the red/black GM wire goes to brake controller black. The white wires go together. The light blue
    view full answer...

Info for these parts were:

Expert Research:
Michael H
Installed by:
Jeff D
Updated by:
Laura H
Updated by:
Sarah W
Updated by:
Alexander C

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