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  1. Trailer Brake Controller
  2. Dexter Axle
  3. Electric
  4. Proportional Controller
  5. Up to 2 Axles
  6. LED Display
Dexter Predator DX2 Trailer Brake Controller - 1 to 2 Axles - Proportional

Dexter Predator DX2 Trailer Brake Controller - 1 to 2 Axles - Proportional

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Trailer Brake Controller
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Shipping Weight: 0.79 lbs
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Brake controller activates trailer brakes in proportion to deceleration. Large digital LED screen clearly displays settings. Gain wheel provides preset levels of braking. Automatically levels when mounted within a 125-degree range. Lowest Prices for the best trailer brake controller from Dexter Axle. Dexter Predator DX2 Trailer Brake Controller - 1 to 2 Axles - Proportional part number 58-8 can be ordered online at or call 1-833-496-1390 for expert service.
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  • Reviews (28)
  • Q & A (0)
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Dexter Axle Trailer Brake Controller

  • Electric
  • Proportional Controller
  • Dexter Axle
  • Up to 2 Axles
  • LED Display
  • Under-Dash Box
  • Dash Mount
  • Manual Leveling
  • Up to 125 Degrees

Brake controller activates trailer brakes in proportion to deceleration. Large digital LED screen clearly displays settings. Gain wheel provides preset levels of braking. Automatically levels when mounted within a 125-degree range.


  • Brake controller activates your 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
  • Adjustable gain setting lets you determine the power output sent to the trailer's brakes
    • Set to higher output when towing in hilly terrain or with a fully loaded trailer
    • Back off power when towing a lightweight or empty trailer
  • Deceleration sensor lever lets you adjust braking aggressiveness
  • Large digital LED display indicates controller settings and monitors voltage output
  • Slide-bar lever allows for manual application of brakes
  • Built-in safeguards protect your vehicle and trailer
    • Manual override illuminates brake lights on tow vehicle and trailer
    • Current limiter protects vehicle from shorts in the trailer wiring
    • Hazard flasher immunity prevents pulsing of the brakes when flashers are activated
  • Quick and easy mounting with included bracket and hardware
    • Controller must be level or within mounting range
    • Pigtail harness hardwires into your vehicle
  • Made in the USA


  • Application: single- and tandem-axle trailers
    • Designed for use with electric brakes only
  • Mounting angle: -35 degrees to 90 degrees in the vertical plane
  • Dimensions: 3" wide x 6-1/2" long x 1-5/8" tall
  • 7-Year limited 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 that same manner

As long as the Dexter Predator DX2 controller is properly mounted, it will sense - via an internal sensor - how your tow vehicle brakes. The 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 Output Control

Dexter Predator DX2 Power Gain Wheel

The power output control on this brake controller lets you set the maximum amount of power that will be applied to your trailer's brakes. Typically, the power output is only readjusted if you switch from a heavy, loaded trailer to a much lighter, empty trailer - or vice versa.

During the initial setup process, you can use the thumbwheel to adjust the power output. To get more power to your brakes, increase the power level. To decrease the power output, lower the power level.

Sensitivity Adjustment with Deceleration Sensor Lever

Dexter Predator DX2 Deceleration Sensor Level

Once you have the overall power set, you can fine-tune the power output by adjusting the sensitivity of the internal sensor. Use the lever to achieve your desired degree of intensity. Move the lever toward you to delay the power output, creating braking sensitivity that is ideal for lightweight setups. If you are towing a heavy load, you may want to have the trailer brake more aggressively to prevent it from pushing your tow vehicle. To get a stronger stopping action, move the lever so that it points away from you.

Large Digital LED Display

The unit also features a large digital LED display, which shows the controller's power settings. It also shows the voltage, allowing you to easily identify that the trailer brakes are receiving power.

Slide-Bar Manual Override

Dexter Predator DX2 Manual Override

This unit comes with a manual override lever on the front that lets you activate the trailer brakes without needing to activate your vehicle's brakes. When you use the manual override, the amount of power sent back to the trailer brakes will be the maximum amount of power, regardless of the preset power level you selected during setup. This ensures that you will always get the most effective braking in an emergency situation. In addition to being a necessary safety feature, this option also helps to control trailer sway by slowing the trailer to put it back solidly behind the tow vehicle.

You can also engage the manual override to help you move a sliding 5th-wheel hitch closer to your truck's tailgate for tight maneuvering during slow speed turns. Just apply the manual override to hold the trailer in place while slowly moving the tow vehicle forward.

Quick, Simple Installation

Because the controller operates with an internal inertia sensor, it must be mounted between -35 degrees and 90 degrees in the vertical plane. During initial installation, the deceleration sensor lever must be positioned straight up and down. The device must also 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.

This brake controller is designed to be hardwired into your vehicle.

Installation Accessories

See'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

Note: One of the following will be required to ensure proper installation:

  • 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

058-008-00 Dexter Predator DX2 Electric Trailer Brake Controller with Inertia Sensor - 1 to 2 Axles - Proportional

Replaces 58-8

Item # 58-8

Customer Reviews

Dexter Predator DX2 Trailer Brake Controller - 1 to 2 Axles - Proportional - 58-8

Average Customer Rating:  4.9 out of 5 stars   (28 Customer Reviews)

Brake controller activates trailer brakes in proportion to deceleration. Large digital LED screen clearly displays settings. Gain wheel provides preset levels of braking. Automatically levels when mounted within a 125-degree range.


Products came quickly... what I was looking for.


Easy to set up and use.


I am very satisfied with the Dexter Axle Predator Electric Brake controller. I purchased the Dexter brake controller to be compatible with Dexter car trailer axles on a 16 foot car hauler. The braking unit is very useful when towing in very steep and winding mountain terrain. I feel that the braking is a necessary safety item when towing in a hilly or mountainous environment and the Dexter Predator brake controller provides the great control and driver peace of mind knowing that a heavy load can be managed. The unit installs very easily with the proper adapter.


My brake controller was a great match for my needs. I have a 4 brake trailer which gets the proper control from my Dexter unit. From empty weight to heavy load the adjustment is just a slight roll of the knob. I like the digital read out so I can glance down to check system operations. It does great f or me and fit right in to the factory wire set up in my truck


The parts I ordered were shipped and now are installed on a enclosed trailer that carries a variety of motorcycles. The roads are mountainous and treacherous here so I have to be able to 100% depend on my trailer brakes. The brakes have been flawless, giving me total confidence. Perfect parts, great price. Customer service was a 10. Thanks for all your help !


Just finish installing the brake controller so I have not seen it in operation. Everything that was needed for installation was contained in the package. Due to limited access due to the chosen mounting location getting two of the side screws started took some effort.


Everything was sent that I ordered. Thank you


This is a great product, installation was easy, instructions accurate and product works as advertised. I would do this all over again if needed.


A great product. Had it installed by my Benz dealership. No adjustments needed.....factory settings were all I needed to tow my boat and trailer.


Item was shipped promptly and was easy to install works great on my 20,000 pound felling goosneck trailer with 4 electric over hydraulic disc brakes.


Easy to install and adjust, seems to work well with my Pathfinder. The butt connectors that were included were not the correct size but i wouldn't have used them anyway.


So far so good all products worked as a dvertised


Great service from etrailer. I have never had a problem with any products I have bought.
Excellent company.


good quality product, instructions are easy to follow.


Your the greatest!





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


Quality product at a good price.


These guys and gals are fast with their deliveries!


Product arrived earlier than expected.



Great service, very easy buying experie nce.



Show More Reviews

See what our Experts say about this Dexter Axle Trailer Brake Controller

  • Hazard Lights Locking Up Trailer Brakes and Activating Electric Brake Controller On RV
    If the red wire from your brake controller is tapped into a wire that has voltage when the hazard lights are activated then this situation will occur. You will need to attach the red wire from the brake controller to a brake signal wire, under the dash at the brake pedal switch, that only has power when the brake pedal is pressed on your RV, so that when the hazards are on your trailer brakes do not lock up.
    view full answer...
  • Can a Trailer with Electric Brakes be Converted to Surge Hydraulic Brakes
    You can convert your trailer from electric brakes to hydraulic surge brakes, but it will require new brake assemblies, a new coupler and brake lines. To see all that is needed check out the FAQ article I attached to the right.
    view full answer...
  • Trailer Brake Controller for a 2008 Saab 9-7X with Factory 7-Way Trailer Connector
    The 24 pin receptacle you are seeing sounds like the OBD2 port and would not be used for a brake controller. You will need to utilize the owners manual or a Saab technician to locate the wires and to determine the functions of those wires. Identifying the wire functions is critical because a brake controller has to be hardwired in since there is no plug and play option available. The wires on a brake controller are as follows: white is ground black is 12 volt power in blue is output to...
    view full answer...
  • Where To Measure to Determine What Size Brake Assemblies are Needed
    In order to determine what size brakes you need you will need to measure what you currently have on your trailer. Check out the picture I attached that shows you exactly where to measure. If you are instead looking for a way to add brakes to your trailer that currently does not have any check out the help article I attached that covers this.
    view full answer...
    Image 1 for
  • Trailer Brakes Lock Up When Brake Pedal is Pressed Even With Controller Turned All the Way Down
    Have you tried towing the trailer with another truck? Or towing another trailer with the Dodge? This would help you narrow down whether the problem is with the wiring on the vehicle or the trailer. From what you're describing, it sounds like either something's incorrectly wired on the vehicle or trailer, or the trailer connector on the vehicle is damaged or corroded. This is kind of a strange occurrence, so try what I've mentioned above and get back with me. I've also linked you to our...
    view full answer...
  • Troubleshooting Brake Controller that Won't Work with Brake Pedal
    If a brake controller is detecting a trailer connected when there isn't one connected that indicates that there is a load somewhere on the brake output circuit that is confusing the controller. Typically this is corrosion on the 7-way and cleaning the pins with fine grit sandpaper will do the trick. If a controller will work with the override but not with the brake pedal that indicates a problem with the red (stoplight circuit) wire of the controller. What you will need to do is check...
    view full answer...
  • Should Brake Controller Draw Power All The Time
    You won't have any problem with power going to the brake controller all the time. This lets the brake controller keep all of its settings and not lose them every time the vehicle is turned off. Brake controllers are designed to enter a sleep mode after a period of time when there is no activity. An idle controller draws very little current and will not drain the vehicle battery.
    view full answer...
  • Fuse and Circuit Breaker Installation Help For Dexter Predator Brake Controller in 2008 GMC Sierra
    When installing the Dexter Predator Brake Controller # 58-8 in your 2008 GMC Sierra you will want to follow the Dexter instructions and install the specified fuse and self-resetting circuit breaker as indicated. The vehicle manufacturer installs fuses to protect the OEM electrical components in the vehicle so any aftermarket accessory that is added will need to be protected independently of the factory fuses and circuit breakers. To correctly install the Dexter Predator you will leave...
    view full answer...
  • Install Video for Brake Controller in 2006 Ford F-150
    I found the video you are looking for and attached a link to it on this page. You'll want to look for the heading titled "FEATURED HELP INFORMATION" and under that "Miscellanious Media" and you'll see a link. It depends on what device you are using to view this page but most likely it's underneath the product links so you should scroll down.
    view full answer...
  • How to Wire Dexter DX2 Brake Controller on 2013 Chevrolet Silverado
    The red wire from your Dexter DX2 brake controller # 58-8 needs to be wired to the cold side of the stop light switch, which on your 2013 Chevy Silverado corresponds to a light blue wire with a white stripe. This wire should ONLY be hot when the brake pedal is applied. The rest of the wires actually match up with the same color wires on your truck as follows: Dark blue on brake controller - To dark blue on vehicle White on brake controller - To white on vehicle Black on brake controller...
    view full answer...
    Image 1 for
  • Troubleshooting Brake Controller with 1.5 on Display All of the Time
    Sometimes brake controllers need to be reset as they get a weird internal bug. Try unplugging yours for a minute or so and replugging in and see if that helps. Here's how to test the controller though: Testing the brake controller is fairly easy. Sever the blue brake output wire near the brake controller leaving enough room to reconnect it and then apply the manual slide. Using a circuit tester like the Tester, part # PTW2993, you should get output to the controller side of the wire you...
    view full answer...
  • Display of Dexter 58-8 DX 2 Predator Brake Controller Lights Up Without Trailer Connected
    According to Dexter Axle, it's perfectly normal for the display to light up and display .0 when a trailer isn't connected. This will happen regardless of if the vehicle is running, as the controller has a constant 12V connection to the vehicle battery.
    view full answer...
  • Brake Controller Does Not Have Full Power When Used
    First, I would go to the 7-way connector and test to make sure you have power. You will want to use a circuit tester, part # 40376 to test the wires. Start by testing the Black wire for power, then test the Blue wire for brake controller output. To test the Blue wire you will need to have a friend help you. With the vehicle in power accessory mode, in park, and parking brake engaged, have them activate the brakes. Next I would check to make sure the Red Stoplight wire is connected and...
    view full answer...
  • Surge Brakes or Electric Brake Controller for a Trailer Towed by a Motorcycle
    Electric brakes and brake controllers do require adjustment when the trailer changes weight due to adding or removing a load. As long as you remember to do that there is no problem with the brakes being too aggressive. Surge brakes require a certain amount of momentum, inertia to activate the trailer brakes. The reason you do not see them on trailers towed by motorcycles is because those trailers are light and it does take a lot of pressure to activate the brakes that just isn't present...
    view full answer...
  • Can the Predator DX2 Brake Controller Work on a Trailer with 6 Brake Assemblies
    I have a solution for you, but the Dexter Axle Predator Electric Brake Controller # 58-8 that you referenced can only be used on up to 4 brake assemblies. Instead you would want the Prodigy P2 Brake Controller part # 90885. This controller can be used on up to 8 brake assemblies and would work great for you. This is our best selling controller because of how easy it is to set up and how well it works.
    view full answer...
  • Mounting Bracket for a Dexter Predator DX2 Brake Controller
    You should be able to use bracket # 2178. I have included a picture showing the measurements for you. I was able to read the instructions for the controller from the Dexter site but I can send you a copy in a separate email.
    view full answer...
    Image 1 for
  • Will a P3 Brake Controller Use Same Wiring as Dexter Predator DX2 on a 2011 VW Touareg
    The wire functions are going to be the same between the Dexter Predator, # 58-8, and the P3, # 90195. The white wire is ground, black is 12 volt power, red is input from stop light circuit, and blue is output to the trailer brakes. If you already have wiring connected to your 2011 VW Touareg for the Predator brake controller then you could just cut off the wires and splice them to the matching wires on the P3. If you do not have a controller installed on the vehicle then there are some...
    view full answer...
  • Troubleshooting 12V Power & Brake Output Circuits on 7-Way on 2008 Saab 9-7X
    It sounds like you have a 7-way trailer socket on your 2008 Saab 9-7X that has no signals on the 12V charging circuit nor on the brake controller output circuit. If you refer to the linked photo you'll see the usual pin/function assignments typically found on an RV-style 7-way. Often the 12V trailer power circuit is carried on the pin at the 1-o-clock position and the brake controller output is carried on the pin at the 5-o-clock position. The most common causes for an issue like this...
    view full answer...
    Image 1 for
  • Troubleshooting No Truck Brake Lights When Manual Override Used on Dexter Predator Brake Controller
    According to the Dexter Predator # 58-8 Brake Controller installation instructions, if your truck lights are not illuminating properly with the manual override is activated, then you will need to check the red stoplight wiring connection. The brake controller red wire should be connected to the non-powered stop lamp switch wire on your 2008 GMC Sierra. On your specific truck there should be a wiring bundle that is below the steering column, and is to the left of the brake pedal. This...
    view full answer...
  • Installing Dexter Predator DX2 Brake Controller on 2008 GMC Envoy
    As long as your 2008 GMC Envoy is equipped with the factory 7-Way connector there will be blunt cut wires located inside the vehicle on the driver's side under the instrument panel to which your Dexter Predator DX2 Brake Controller # 58-8 can be directly wired. Based on my research there should be a red/black wire that connects to the black (12V power) wire on the controller, a white wire that connects to the white (ground) wire on the controller, a light blue/white wire that gets connected...
    view full answer...
  • Can the Dexter # 58-8 Predator DX2 Brake Controller Be Installed Vertically
    According to Dexter, the # 58-8 Predator DX2 needs to be mounted in the direction of travel, level on a side to side plane. If mounted on vertical plane as you mention, the brake controller would not function. If the vehicle design somehow limits the installation options, and you have no other option than to mount a brake controller vertically, you can use a time delayed brake controller like the # 5504 Draw-Tite Activator IV. Because the controller is solid state, if can be mounted anywhere...
    view full answer...
  • Wiring a Brake Controller on 2010 Chevy Silverado
    You are correct, the tow package wiring in your Silverado does not match up color for color with the controller. The red/black tow package wire will connect to the black wire on the controller. The dark blue tow package wire connects to the blue wire on the controller, the light blue tow package wire connects to the red controller wire, and the white tow package wire connects to the white wire on the controller. The orange tow package wire is for an illumination circuit and is NOT needed....
    view full answer...
  • How to Wire Dexter Predator Brake Controller on a 2013 Town and Country With a Tow Package
    In my research, the 2013 Chrysler Town and Country with a tow package does come with a wiring harness and should have a 7-way. To install the Dexter Predator # 58-8, you will need to run the wires from the brake controller to the 7-way connector on your vehicle. You are also going to need Draw-Tite # 5506 which gives you the extra length you will need to hook up your brake controller to your 7-way connector. I have attached a FAQ regarding trailer brake controller installation information,...
    view full answer...
    Image 1 for
  • Parts Needed to Install Dexter Predator Trailer Brake Controller 58-8 in 1999 Toyota 4Runner
    Since you already have a 4-pole harness on your 1999 Toyota 4Runner all you need to install the Dexter Predator Trailer Brake Controller # 58-8 is our all-inclusive installation kit # ETBC7. This kit includes a combo 4-pole/7-way trailer socket, all connectors, wiring, circuit breakers, etc that are required for wiring in the controller and having a fully-functioning 4/7-way. An installation article and video for this kit are linked for your review.
    view full answer...

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