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Curt Discovery Trailer Brake Controller - 1 to 4 Axles - Time Delayed
Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In

Part Numbers: C51120,C51451



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Curt Discovery Trailer Brake Controller - 1 to 4 Axles - Time Delayed
part number: C51120

Electronic controller activates electric trailer brakes with a preset intensity when you apply the brakes in your vehicle. Power output and braking aggressiveness are easily adjustable. Includes easy-to-read digital display and manual override.


  • Brake controller activates trailer brakes with preset intensity
    • Signal is sent to trailer brakes when tow vehicle's brakes are activated
  • Adjustable, thumbwheel power output control lets you determine the amount of braking force
    • Set to maximum when you travel through hilly terrain with a fully loaded trailer
    • Back off the power output when you tow a lightweight trailer
  • Sync setting lets you adjust the aggressiveness with which the brakes are activated
    • Get full power output faster by moving slide-bar switch forward to increase activation speed
    • Achieve smoother braking by moving switch in opposite direction to supply power gradually
  • Easy-to-read digital display communicates brake force output, sync setting, and error codes
  • Self-diagnostics function monitors trailer connection and checks for shorts
  • Built-in, slide-bar manual override
  • Quick and easy installation
    • No need to mount level like proportional brake controllers
    • Mounting bracket and hardware included
    • Plug-in, vehicle-specific brake control adapter (sold separately) can be used for certain applications to reduce installation time


  • Application: trailers with up to 4 axles (8 brake assemblies)
    • Designed for use with electric brakes only
  • Limited lifetime warranty

Time-Delayed Braking

The Discovery applies your trailer's brakes when the brake pedal in your tow vehicle is engaged. Every time you apply the brakes in your vehicle, a signal is sent - via the brake switch - to the Discovery. The controller then sends power out to your trailer brakes to activate them with an intensity set by you, at a rate determined by you. Both the amount of braking power (output) and rate of application (sync) can be adjusted to suit your preference, the road conditions, type of trailer, and size of the load. To determine which levels are best for your application, you must test out your towing setup and choose what feels best.

A time-delay controller is so named because there is a delay between the time that you initially apply the brakes in your tow vehicle and the time that the controller reaches maximum power output. Unlike a proportional brake controller, which activates your trailer's brakes based on the deceleration of your tow vehicle, the Discovery sends power out in the same way, with the same gradual delay, no matter the braking situation. Although this delay always exists, it can be adjusted by changing the sync setting.

Built-In Controls for Adjustable Power

Curt Discovery Controls and Components

The above diagram shows the controls and components of the Curt Discovery trailer brake controller.

  1. Digital display
  2. Power output control
  3. Sync control
  4. Slide-bar manual override

Output Control

During the initial setup process, use the thumbwheel control on top of the Discovery to adjust the output. The output control lets you set the maximum amount of power that will be applied to your trailer's brakes. Typically, the output is only readjusted when you experience changing road conditions or if you switch over from a heavy, loaded trailer to a much lighter, empty trailer, or vice versa. To get more power to your brakes, rotate the switch to the right. To decrease the power output, move it to the left. The output setting will appear on the digital display when you press the brake pedal or activate the manual override. This setting ranges from 0 to 10, with 10 indicating maximum output.

Sync Setting

To adjust the aggressiveness of your trailer's braking action, use the slide-bar control on the side of the Discovery to change the sync setting. If you want to reach maximum power output faster, move the switch forward. To get smoother braking action, slide the switch backward, thus supplying power to the trailer brakes more gradually. You can alter the sync setting to suit your driving preferences or to improve handling based on changing road conditions or varied trailer loads. The digital display will only show the sync setting as you adjust it.

Quick, Simple Installation

Because inertia plays no role in the functioning of this controller, you do not have to mount the unit at any particular angle. As a result, mounting options are limitless, so long as you can still easily access the controller.

Installation of the Discovery requires that you either purchase a custom wiring adapter designed to plug into the controller or that you hardwire the controller directly into your vehicle. To hardwire the Discovery, you must remove the plug at the end of the integrated wiring harness.

Installation Accessories

For easier installation, a vehicle-specific wiring adapter (sold separately) is 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.

Note: If a custom brake control wiring adapter is not available for your vehicle, one of the following will be required:

20-Amp circuit breaker (9506P - sold separately) for 2- to 4-brake applications

30-Amp circuit breaker (38630 - sold separately) for 6- to 8-brake applications

See also'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.

51120 Curt Discovery Time Delay Trailer Brake Control

Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In
part number: C51451

Install your Curt electric trailer brake controller quickly and easily with this custom wiring adapter. Simply plug one end of the adapter into your controller and then plug the other end into the built-in port beneath your vehicle's dash.


  • Plug-in wiring adapter allows for quick, simple installation of your electric trailer brake controller
  • No cutting or splicing required
    • Custom connector end plugs into the built-in port beneath the dash of your vehicle
    • Other end plugs into the back of your electric brake controller
  • Compatible with time-delayed and proportional brake controllers from Curt
    • Brake controller must have built-in plug for adapter to connect - will not work on controllers with pigtail wiring harnesses
  • 2' Long, 12-gauge wires have protective covering to deter damage
  • Limited 1-year warranty

Installation of Curt Brake Controller Adapter

To install your Curt 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. When this is done, a port is installed at your dash so that you can easily plug in a brake controller.

This adapter plugs into the port on your vehicle's built-in brake control wiring harness. The port is located in the wiring panel underneath the dash, to the left of the steering column, near the emergency brake pedal.

No hardwiring is required to install this adapter. After you plug it into the factory port, you simply plug the other end of the adapter directly into your electric trailer brake controller. Because there are no wires to connect, installation is not permanent. You can unplug and remove your brake controller at any time to transfer it to another vehicle or securely stow it away.

51451 Curt Quick Plug Brake Control Adaptor Harness

Video of Demo-Curt-Brake-Controller-C51120

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

Video Demo Curt Brake Controller C51120
Curt Brake Controller C51120 Review
Video install curt discovery brake controller 2014 jeep grand cherokee c51120
Trailer Brake Controller Installation - 2014 Jeep Grand Cherokee

Video Transcript for Curt Brake Controller C51120 Review

Today we're going to take a look at the Curt Discovery Trailer Brake Controller number C51120. This time delayed brake controller activates trailer brakes with a preset intensity. The signal is sent to the trailer brakes when the tow vehicle's brakes are activated.It has an adjustable thumb wheel power output that allows you to determine the amount of breaking force you would set to the maximum when you travel through a more hilly terrain with a fully loaded trailer and you would back off the power output when you're towing a smaller more lightweight trailer.It also features a sink switch here on the side. It allows you to adjust the aggressiveness of the brakes. If you want it full power in this position right here. It will increase the activation speed of the brakes and you would move it back in the opposite direction to achieve a smoother braking by supplying the power more gradually.

It has an easy to read digital display that communicates brake force output, sink setting and air codes and we'll attach this to a power supply in just a moment so you can see that a little better. Self-diagnostics function monitors the trailer connection and checks for shorts. It has a built in slide bar emergency manual override and again we'll discuss that more in just a moment. It has also has a quick and easy installation. It comes with the mounting bracket right here.

The screws to attach the bracket to the controller as well as a quick reference card if you have any questions. One of the differences between the time delay brake controller and a proportional brake controller is there's no need to mount this one level the way you would a proportional controller.You can mount it up, down, side to side, as long as you can see the digital display you're good to go. This application is for trailers up to four axles or eight brake assemblies. It's designed for use with electric brakes only and it does have a limited lifetime warranty. Now we're going to attach it to our power supply and the wiring harness that we're using here is the Curt Universal Wiring Adapter for Curt Trailer Brake Controllers, number C51515.

This particular harness ends in a pigtail and it is intended for vehicles who do not come with a factory installed brake controller port. Now when you hit the brake you will be able to see the digital display and say right here we'll use our output knob here. You can go from zero to ten and we'll set that at five for right now and over here our sink all the way to nine and then slide it back to zero. We will put that at five as well. When we talk about our emergency manual override say youre in traffic and somebody cuts you off and you have to hit the brakes really quick what you would do is hitch your emergency manual override and instead of the normal amount of time it would take for the trailer brakes to brake this removes the time delay function and the maximum output that you had preset it goes to the brakes immediately to help slow you down to prevent any accidents.

That should just about do it for our Curt Discovery Trailer Brake Controller number C51120.

Ask the Experts about this Brake Controller
Do you have a question about this Brake Controller?

  • Installing Curt Discovery Brake Controller # C51120 on 1988 Ford F150
  • To hardwire the # C51120 Curt Brake Controller, you can either cut off the existing plug on its wiring harness or use the universal pigtail, part # C51515. The universal pigtail would provide an easy way to quickly disconnect the brake controller, should it become necessary. You would then use our Brake Controller Installation Kit, part # ETBC7. If you do not already have a functional 4-pole trailer connector you would also need to install one using part # 118316. The install kit includes
    view full answer...

  • Brake Controller Installation Harness Recommendation for a 2015 Chevy Suburban
  • Yes, there is a port under the dash of your 2015 Chevy Suburban that will allow for a painless installation of a brake controller that won't require splicing. The harness to go along with the Curt Brake Controller part # C51120 that you referenced is the part # C51452. If you went with our most popular brake controller, the P2 part # 90885 you would only need the harness part # 3016. See the install video I attached.
    view full answer...

  • Brake Controller and Wiring Harness for a 2015 Ford F-150
  • Curt does not have a listing for a brake controller wiring harness for a 2015 Ford F-150 at this time. You will need the appropriate wiring harness to plug a controller directly into the truck. I recommend the Tekonsha P2 controller, # 90885, because it is easy to set up and use and it is reliable. You would need wiring harness # 22292, also known as 3036-P.
    view full answer...

  • Wiring Curt Brake Controller # C51120 in 2002 GMC Sierra 1500
  • Based on your description of the problem with your Curt Discovery # C51120 Time Delayed Brake Controller one cause could be a mis-wired plug-and-play harness. Please refer to the photo provided which shows how the vehicle side of the harness should be wired. For reference I have also linked a help article concerning brake controller installations in GMC trucks. The connector should be pinned out with the four wires as shown in the provided photo. If the red wire is connected to a different
    view full answer...

  • Brake Controller Installation on 2011 Toyota Tundra
  • If your 2011 Tundra has the factory tow package, which includes the factory installed 7-way trailer connector on the rear bumper, it will be equipped with the tow package plug under the dash, as shown in the photo I've edited for you. Some models with the factory 4-pole (or 4-pin) trailer connector will also have the plug under the dash, you'll need to look for a white plug located above and to the left of the emergency brake pedal, above the toe kick. Occasionally, the plug will be located
    view full answer...

  • Parts Needed to Install the Curt Discovery Brake Controller # C51120 on a 2013 Dodge Durango
  • The Curt Discovery Trailer Brake Controller, # C51120, and the Custom Wiring Adapter, # C51446, will work on your 2013 Dodge Durango without splicing as long as your Durango came with a factory 7-way trailer connector at the trailer hitch. The 7-way trailer connector would indicate that your truck has the factory tow package, which would include a brake controller plug under the drivers side dash. You should see a gray connector just to the left of the steering column. If your Durango
    view full answer...

  • Parts Needed to Install an Electric Trailer Brake Controller on a 2012 Nissan Frontier
  • The Curt brake controller # C51120 by itself does not plug directly into the factory location on the 2012 Nissan Frontier. You require another harness, # C51382. Once end plugs into the brake controller the other to the factory harness on the vehicle. The factory harness will be located underneath and left of the steering column, taped to another harness near the emergency brake pedal. If your 2012 Nissan Frontier did not come with a factory installed 7-Way trailer connector you will
    view full answer...

  • Parts Needed and Method to Install Curt Trailer Brake Controller on 2007 Chevy Silverado
  • You may or may not need an additional wiring harness to install the brake controller. If your 2007 Chevy Silverado is the new body style you will not necessarily need the harness, but if it is a Classic you will need harness # C51352 because there is a port under the dash on the floor, on the far left. One end plugs into the controller, the other end plugs into the port. The port is located in a junction box. There is a black cover on the box. Remove the cover and plug in the harness
    view full answer...

  • Will the Curt Custom Brake Controller Adapter # C51322 Work with a 1998 Lincoln Navigator
  • The Curt Custom Wiring Adapter, # C51322, was designed to work with the factory brake controller plug on your 1998 Lincoln Navigator. The pin for the red wire coming from the brake controller should mate with the pin for the light green wire on your factory plug. It will be the middle pin and on one side you should have a pin with constant 12 volt power and the pin on the other side should have no power. I have attached a photo that shows the functions of each pin on the custom wiring adapter
    view full answer...

  • Can the Curt Discover Brake Controller # C51120 be Installed in a 2014 Ram 1500
  • I spoke with my contact at Curt and he informed me that you can use the Curt Discovery Brake Controller part # C51120 in your 2014 Ram 1500 Laramie as long as you use the install harness part # C51453. It sounds like someone removed the connector from the end of your brake controller wiring, what you would need to do to wire up your controller to the # C51453 would be to cut off the black connector on the harness and match the wires up color for color.
    view full answer...

  • Wiring Harness Needed to Plug Curt Brake Controller into a 2006 Ford F-150
  • The Curt brake controller # C51120 can plug directly into your 2006 Ford F-150 using the proper wiring harness, # C51322. This harness is sold separately. I have included a link to a video to the right that shows where the connection point is on your truck. The brake controller and harness are different in the video but they plug into the same place on the truck.
    view full answer...

  • Recommended Brake Controller Wiring Harness For 2013 Toyota Tundra
  • If your 2013 Toyota Tundra has the factory 7-way installed, the Curt Custom Wiring Adapter, part # C51362 will be what you need to connect the Curt Discovery Trailer Brake Controller, part # C51120. If you have a 4-way connector installed on your Tundra, part # C51515 is what you need. This harness is used 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. If your vehicle doesn't have a factory tow
    view full answer...

  • Curt Discovery Brake Controller Shows OL Error When Trailer is Connected
  • It is possible that it is a simple wiring issue that is causing the errors on your Curt Discovery brake controller # C51120. On your 2010 Chevy Silverado, there is a tow package wire bundle under the dash to wire in a brake controller. The tow package red goes to brake controller black. White goes to white, blue to blue, and the light blue or orange wire on the truck goes to the brake controller red wire. The OL indicates an overload and if all of the connections at the brake controller
    view full answer...

  • Troubleshooting Flashing 0.0 Error Message on Curt Discovery Brake Controller # C51120
  • The troubleshooting guide included in the instructions for the Curt Discovery Brake Controller # C51120 that you referenced does not include this particular display issue, a flashing 0.0, among the possible display messages. My technical contact at Curt has never seen this particular message displayed on a Discovery brake controller. He suggested that either the display is malfunctioning or the controller is bad. Since your brakes are not engaging when you press the pedal with the trailer
    view full answer...

  • Parts Needed to Install a 7-Way Trailer Connector and Brake Controller on a 1996 Ford F-150
  • There are some things in your cart that you do not need and you are missing some other things you do need. To install a brake controller in your 1996 Ford F-150 you first have to look at if the truck has any trailer connector or not. You mentioned you do not have a 7-Way on the truck but do you have a 4-Way flat connector? If you do have a 4-Way flat trailer connector then you will need 7-Way adapter # 37185. The 4-Way plugs into the adapter then there are some loose wires that need
    view full answer...

  • How to Install a Brake Controller on a 2008 Chevrolet 3500 with Factory Brake Controller
  • There was actually a technical bulletin released regarding this exact issue, which I have linked for you to check out. To install the Curt Discovery Brake Controller, # C51120, you will need the Universal Wiring Adapter, # C51515, and approximately 20 to 25 ft of 12 gauge wire, # 12-1-1. Your 2008 Chevrolet 3500 does not have a plug-in style connector under the dash, but it has 4 or 5 blunt cut wires bundled together under the dash above the emergency brake pedal with a white label
    view full answer...

  • Troubleshooting Flashing Display of the Curt Discovery Brake Controller part # C51120
  • The flashing O.L. message with the Curt Discovery Brake Controller part # C51120 when there is no trailer connected indicates that there is a short somewhere on the brake output circuit. I would check all the connections you made on the blue wire from the controller and then also check the trailer connector at the rear of the vehicle looking for any exposed wire or corrosion and fix as necessary. If it only flashes O.L. when the trailer is connected the problem is the same as above but
    view full answer...

  • Wiring Adapter for Installing Curt # C51120 Discovery Brake Controller on 2014 Ford Explorer
  • To install the Curt Discovery # C51120 brake controller on your 2014 Explorer, you'll need the Curt wiring adapter, part # C51322. The plug for the brake controller is located under the dash, behind the handle for the hood release.
    view full answer...

  • How Is Curt Time-Delayed Brake Controller Installed
  • Many vehicles designed for towing have a port located under the dash that you are able to use for installing a brake controller like the Curt Discovery Trailer Brake Controller, part # C51120. There are adapters available for some vehicles and other vehicles will require hard wiring when installing. I have attached a product review video for the Curt Brake Controller you can take a look at. I have also attached a couple of helpful articles that explains brake controllers and their
    view full answer...

  • Where Does a Brake Controller Plug In on a 2014 GMC Sierra 1500
  • On your 2014 GMC Sierra 1500 there is a junction box with a black cover on it located on the driver's side floorboard, way in the back, to the left of the brake pedal. There should be an empty spot to plug in the wiring harness located in the upper left corner. I have included a link to a video that should help. It is a different harness but it plugs into the same spot.
    view full answer...

Info for these parts were:

Edited by:
Leah B

Photos by:
Jackie C

Expert Research:
Michael L

Written by:
Lindsey S

Expert Research:
Michael H

Expert Research:
Jameson C

Expert Research:
John H

Updated by:
Adele M

Expert Research:
Adam R

Video Edited:
Dustin K

Photos by:
Jim W

Test Fit:
Shane T

Expert Research:
Jeffrey L

Written by:
Laura H

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.

Customer Reviews

Curt Discovery Trailer Brake Controller - 1 to 4 Axles - Time Delayed - C51120

Average Customer Rating:  4.9 out of 5 stars   (61 Customer Reviews)

Electronic controller activates electric trailer brakes with a preset intensity when you apply the brakes in your vehicle. Power output and braking aggressiveness are easily adjustable. Includes easy-to-read digital display and manual override.

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by: Randy G01/04/2014

This is an outstanding product - exactly as described. I installed it into my 2005 Ford F150 XLT Extended Cab. Took longer for me to decide where to put it than the actual installation, which took about 3 minutes. My truck had the tow package so the harness - which was included - was an exact match to my truck's harness plug on the right side of the dash in the driver's area. Extremely satisfied. 111895


It is still working well I used the Brake Controller a week ago and still no problems. Works exactly as described. Great product!

Randy G - 01/05/2015


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by: J.C. from Bay City02/24/2014

Ordered a brake control and an inline circuit breaker on Feb 11th and shipped the same day. I chose the least expensive shipping option (my bad). A combination of UPS/US Post Office, or so I was told after calling to find out where my shipment was. Tracking info said delivery by the 15th. When it didn't show I called etrailer and was told the post office had it and it was out for delivery...2 days later I finally received it (Feb 20th). I ordered a hitch a couple of weeks prior and received it in 2 days. A 49lb hitch vs a 1lb (maybe) package. Not etrailers fault but I can see why the post office is going broke with service like that! 117375

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by: Patrick T.01/23/2014

This controller work great in my 2008 Tundra, and is very easy to set up and adjust. 114575


Still working great no problems

Patrick T - 01/23/2015


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by: Bill12/30/2013

This is a very small brake controller unit. I had to find the right spot to mount so my knees didn't bump it when I got in and out of the truck. Once the perfect spot was found, the installation was a snap. I used the correct wiring harness to make installation easy. Just snap into back of controller and then into the truck's brake controller wiring harness in the back of dash. It was the simplest install I have ever used. Thanks!!!! 111474

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by: Dustin09/18/2013

I purchased this item with the premade connection wire for my 2010 Dodge Ram with 7 way trailer wiring adapter. I had this installed in less than 12 minutes! Plug the harness in and mount it you are done! Shipping was super fast had my item in 3 days. The best part is I can remove this when I am not towing my RV so that I keep the stock appearance of my truck. Best online buying experience ever! 100495

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by: Rock W.07/29/2013

I chose this brake controller because it was like one I had before so no learning curve needed. Plus I didn't want to mess with extra install concerns of the proportional type controllers. With the video install tips the shade tree mechanic is back in action. With the yr/make/model suggested cable, hook up was a breeze. Ready to do some camping. Thanks etrailer 92116

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by: e whitestone12/03/2013

Much, Much better than the proportional type I had before. The proportional types have to be mounted level. This Curt solid-state digital never needs to be level, in fact it could be mounted upside down and still work. No problem finding a place to mount, since it doesn't have to be level. A great price at etrailer makes it that much better. 109008

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by: David C.05/17/2014

I purchased this controller for a 2006 4 horse stock trailer & a 2006 Dodge Ram 2500 pick-up truck. The installation video from etrailer was very informative & the instruction from the product was very through. I was able to attached the controller & tested it within one hour. I've towed with the trailer since then & it's working great. 131087

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by: Mike11/04/2014

Good quality brake controller for my needs and although I had some issues installing it, etrailer was right there, they helped me troubleshoot my problem and it ended up being a fuse that was not installed apparently by Honda for the ebrake. I popped the fuse in and walah the controller worked perfectly. Thanks Etrailer!! 159127

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by: Gar102/27/2015

Product came on time and connector was correct for my vehicle. Controller is small and blends in with vehicle interior. I like the digital readout but the adjustment range is a bit difficult to get right, hopefully I will find the sweet spot between the power and the sync. For the price I like it. 176409

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by: Dave C04/09/2014

With the factory adapter the total installation took 5 minutes including a fight with a tangled extension cord. Worked awesome. Towed a 8500lb load up and down the Appalachian range without any worries. Thanks again for the fast shipping, awesome product and great customer service. 124394

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by: Andrew12/26/2013

I just received my Curt new brake controller and Etrailer truck brake harness. The package arrived promptly - earlier than expected. The harness kit has everything I need and looks like it is well made. Can't wait to get it all installed and try it out. 111247

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by: Erik O.08/05/2013

So far so good. Product seems well made. Installation was a breeze. 5-10 mins. Ordering was simple. My Order was upgraded to faster shipping at no additional charge! Fantastic company! Will be ordering from in the future! 93288

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by: Jared H.06/25/2013

Great product for the price. This was my first brake controller and it was very easy to setup and mount. I bought the adapter cable for my truck as well and it made it even easier. For the price you cannot go wrong with this. 86013

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by: David Williams02/05/2014

I was able to install the brake control in about 15 minutes using the wiring adapter that matched my truck. Have not had a chance as of yet to try out the controller pulling my trailer. 115860

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by: Ed D.08/05/2014

Installed controller and connected trailer. Paired with the mating factory connector cable, everything was installed and working in 20 minutes. Controller operates as expected. 144475

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by: Fabio W08/07/2013

Order it on Friday got it on Wednesday ! Fast service. Installed it in 5 minutes while cooking on the grill. Works very good for price! Will buy again when I get a new truck 93826

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by: Bill C04/10/2014

Everything was easy to install thanks to the Etrailer video on Youtube. I got it all done in about 20 minutes and it all works great. I highly recommend this company. 124478

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by: Gary W.12/16/2014

Controller works great. Also, good support from e-trailer. I emailed in on a question about wire size and got a fast answer. Product and e-trailer ROCKS for me !! 165648

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by: Sean K11/11/2014

Hardest part was screwing it in took 5 min to complete shipped in two days when it was estimated to take 5 with the ground shipping will use these guys again 160484

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by: gerryh03/11/2014

online instructions for finding factory plug location was excellent, Easy and quick installation and the included manual and card allowed a quick set up. 120166

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by: Ronne - Texas09/09/2013

Very quick shipping. Everything I needed to complete the job. Installed and everything worked the first time. Great product and service. 99044

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by: Todd B.04/23/2014

Great brake controller and simple to install in a 2012 Tacoma using C51362 adapter. No splicing needed and took less than 30 min total. 126986

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by: scott r08/25/2014

finally found time to install brake box and trailer brake backing plate , both work great ! thanks for great price and fast shipping 148260

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by: Larry C08/02/2013

fair price,fast shipping,great product,easy to follow instructions,mounted easily and works great.thanks for the free how to videos. 92919

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by: Chewy07/01/2014

Bought this with the adapter and it works great. Didn't have to cut any wires - easy adjusting levels and bright digital display. 138479

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by: Kevin D.06/06/2013

Simple, fast, Perfect deal. Easy install, my 9 year old could have done it. Very fast shipping, HIGHLY satisfied. Thanks!! 83549

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by: Steve F.05/15/2014

Great product, service and fast delivery! Very easy hook up (one plug) and easy to read/understand directions included. 130858

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by: Todd11/04/2013

Great product for a fraction of the cost of other name brands! I would not hesitate to purchase this product again. 106186

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by: Cliff W.10/16/2014

Great product for the price. Very easy to install and easy reference card makes getting it up to speed very easy. 156246

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by: cliff j01/15/2015

Easy hook up. The only thing I don't like is the Manuel assist button feels cheap but other than that it's good. 169036

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by: David M.09/08/2013

Very happy with brake controller. Took 5 minutes to install in my Frontier truck. Very easy. Thanks 98869

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by: patrick12/29/2013

installed easily, instructions to adjust settings very easy to understand worked great. 111420

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by: Dani T.10/21/2014

Great product and really great customer service! I highly recommend this company. 157028

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by: Mark Mason03/19/2014

I always get excellent products and advice from Etrailer will keep comming back 121339

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by: DIETER S.07/14/2014

Just what the doctor ordered, easy installation, and works the way I had hoped. 141158

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by: Ziggy11/21/2014

Excellent product, fast delivery,great instructions. Perfect service. 162059

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by: tom s07/08/2014

have not installed looking to do in a week or so. should not be 2 bad 140044

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by: Pete R.05/22/2014

Easy to install. works great! wallet instruction card is great idea. 131966

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by: Jeff H.06/16/2014

Great product....easy to install.....great service and follow up. 135764

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by: Jimmy C02/17/2014

Quick delivery and great product that was easy to mount. 116700

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by: Keagan P.07/26/2013

Excellent brake controller. Works perfe ctly. 91756

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by: Dan05/27/2014

Installed in 2 seconds. works like a c harm 132543

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by: Ben S.09/13/2014

Works very well. Easy to install and us e. 150930

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by: Ron H04/23/2014

Great product and price. fast shipping. 126755

- C51120

by: Chris L.09/19/2013

Easy install. Works just like it should. 100557

- C51120

by: Ken H.08/26/2014

works well, easy install and adjustment 148795

- C51120

by: Gerry G.06/09/2013

Excellent product. Very user friendly. 83872

- C51120

by: D.T.10/19/2013

Worked just as advertised! Very easy! 104414

- C51120

by: paul cooley10/17/2013

agin easy as pie thanks agin rose... 104112

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