Dexter Predator DX2 Trailer Brake Controller - 1 to 2 Axles - Proportional
Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Pigtail - GM

Part Numbers: 58-8,3025-S

Retail:$178.74

Our Price: $126.48

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Dexter Axle Up to 2 Axles Brake Controller - 58-8
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Dexter Predator DX2 Trailer Brake Controller - 1 to 2 Axles - Proportional
part number: 58-8

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.

Features:

  • 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


Specs:

  • 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 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


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





Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Pigtail - GM
part number: 3025-S

Streamline the installation of your trailer brake controller with this custom adapter. Simply connect the wires of the harness to your brake controller and then plug the other end into the junction box beneath your vehicle's dash.

Features:

  • Pigtail wiring adapter eases installation of your electric trailer brake controller
  • Connector end plugs into the built-in port beneath the dash of your vehicle
  • Wire end connects to the wires on your brake controller with the included butt connectors
    • Compatible with time-delayed and proportional brake controllers from TrailerMate, Draw-Tite, and Tekonsha
  • Limited 1-year warranty


Installation of Tekonsha Brake Controller Adapter

To install your 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.


Installation 1Installation 2

This adapter plugs into the port that is built into the electric junction box beneath your vehicle's dash. The black box is located to the left of the steering column, just above the carpet. To plug in the adapter, first remove the cover on the box. The adapter plugs into the second slot from the left, on the top row.


To hook this adapter up to your trailer brake controller, just connect the 4 wires of the harness - ground, power, brake switch, and brake power - to the corresponding wires on the brake controller. If your brake controller came with a plug built into its wiring harness, you will have to cut off the plug and connect to the wires themselves.



3025-S Tekonsha Brake Control Pigtail Wiring Adapter - Single Plug - GM

Replaces Tow Ready 20263



California residents: click here



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


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




Video Transcript for Dexter Axle Brake Controller - Proportional Controller - 58-8 Review

Today we're going to be taking a look at part number 58-8. This is the Dexter Axle Predator Electric Brake Controller. It's going to come with your mounting bracket and a mounting hardware as well as some detailed installation instructions. This is inertia activated, so the trailer brakes will apply in direct proportion to the total vehicle braking effort. The unit itself is going to control the power output to the brakes of the trailer and it's going to be able to control the braking response from the tow vehicle to the trailer as well. It's also going to help when it comes to setting the controls.

It's going to allow for manual application of brakes with the manual override lever here at the front. This unit is made for up to two-axle trailer brake systems which would be a total of four brakes. It's going to feature a large digital LED display. It's going to display the voltage output and it's going to make leveling quick and easy. The controller display will increase numerically during a stop or when the brakes are applied or more pressure is applied on the brake pedal. Then it's going to decrease or return to the minimum reading when deceleration is no longer detected.

When the tow vehicle brake pedal is completely released, the display will go off, kind of just as it's shown here. You won't be able to read anything on the display when the brake pedal's released. Again, the mounting bracket and hardware is included. This features a versatile mounting range of minus 35 degrees to positive 90 degrees to accommodate a wide variety of vehicle interiors. When it comes to the dimensions of the actual brake controller, it's going to give us an overall width of about 3 inches, an overall length of about 6-1/2 inches, and an overall height of 1-5/8. On this side, you're going to notice this little lever arm here.

This is the deceleration sensor level arm. When the tow vehicle decelerates, the sensor is going to send an electrical signal for the controller to increase amperage to the trailer brakes. This arm is simply going to allow you to set the level of intensity of that signal. Here at the front you're going to have the power adjustment wheel. This is used to adjust the amount of current or power that is sent to the trailer brakes from the tow vehicle. Then, you also have the manual slide lever.

This is used to apply the trailer brakes independently of the tow vehicle brakes, or to override the automatic trailer brakes. Here at the back it's going to expose four wires. Your white wire's going to be your ground. Your blue wire is for the trailer brakes. The red is for the stoplight wire that connects to the non-powered wire of the stoplight switch, or tow package harness. Then your black wire is going to be your power wire. Real quick, I just want to go ahead and connect this to our external power supply. That way you can see the LED display. You can get a good understanding of how bright that is and how easy it'll be to see. So you can see there the reading. That's when we apply our brakes. Then, again, as you press down the brake pedal that number will increase and then as you decelerate the number will go back down to the setting or the minimum reading. Then, when we do the manual override the display's going to come on as well and then when we fully release it, it'll go back to not reading anything. That's going to do it for today's review of part number 58-8. This is the Dexter Axle Predator Electric Brake Controller. .



Customer Reviews

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

Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Pigtail - GM - 3025-S

Average Customer Rating:  4.9 out of 5 stars   (20 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. Streamline the installation of your trailer brake controller with this custom adapter. Simply connect the wires of the harness to your brake controller and then plug the other end into the junction box beneath your vehicle's dash.

- 58-8
by: Gilberto05/14/2019

So far so good all products worked as a dvertised 642694



- 58-8
by: roula m07/25/2017

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 ! 410276



- 58-8
by: Bob J.09/07/2016

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. 292121



- 58-8
by: Gary M.06/01/2015

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. 199608



- 58-8
by: Roger08/02/2019

All my ordered parts arrived have not installed yet but so far perfect experience. 681243



- 58-8
by: Walter06/18/2019

These guys and gals are fast with their deliveries! 660308



- 58-8
by: Steve04/02/2019

Great service, very easy buying experie nce. 616316



- 58-8
by: Anthony12/29/2018

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. 593808



- 3025-S
by: John10/09/2018

Great product, worked perfectly 573062



- 3025-S
by: Gord05/31/2018
2001 GMC Sierra

Great service, and product worked excellent ! I work order again. 514227


Comments

working great. !

Gord - 05/31/2019

55950

- 58-8
by: WalkerEOD11/03/2017

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. 448846



- 58-8
by: Fred09/09/2017

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 430590



- 3025-S
by: Earl d.09/09/2017
2002 Chevrolet Avalanche

What can I say...no problems....the way everything should be. 430393



- 3025-S
by: Dave w.04/15/2017
2001 Chevrolet Silverado

Good 367758



- 58-8
by: Terry03/06/2017

This is a great product, installation was easy, instructions accurate and product works as advertised. I would do this all over again if needed. 349055



- 3025-S
by: Mark H04/07/2016

Awesome service, fast delivery. I would highly recommend etrailer. ?? 243242



- 58-8
by: Don S12/05/2015

Product arrived earlier than expected. 233178



- 58-8
by: Fred Charlton06/01/2015

good quality product, instructions are easy to follow. 199343



- 58-8
by: Richard01/27/2015

Quality product at a good price. 171365



- 58-8
by: Jim S12/17/2014

Great service from etrailer. I have never had a problem with any products I have bought. Excellent company. 165785


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


  • Recommended Brake Controller for a 2017 Dodge Durango with Factory Installed Tow Package
  • For you 2017 Dodge Durango, i recommend the Tekonsha Prodigy P2 Brake Controller, # 90885. The P2 Brake Controller is a proportional brake controller, so it applies brake power to your trailer in proportion to the brake pressure applied to your vehicle. You will get a faster braking response with proportional controllers over the traditional time delay. The Prodigy P2 is more of an entry level brake controller; easy to use, easy to mount, and it works well. That is probably why it is
    view full answer...

  • Recommended Trailer Brake Controller for 2012 Chevy Silverado
  • For your 2012 Chevy Silverado, I highly recommend the Tekonsha Prodigy P2 Trailer Brake Controller # 90885. This is an excellent proportional controller that will activate the brakes on your boat trailer at the same time and with the same intensity that you apply to them in your truck. It features an easy-to-read digital display, 3 boost settings, and continuous diagnostics that will alert you to any potential issues. This unit is well known for its reliability and ease of use. If your
    view full answer...

  • 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...

  • Dexter Predator Brake Controller 58-8 Installation in 2005 Ford F150
  • If your 2005 Ford F-150 has only 4 wires at the bumper (or only a 4-pole connector) and you need to install a 7-way vehicle-side connector, you could use the Hopkins # 37185. If you already have the 7-way connector on your truck, you will need to make the additional wire connections for the brake controller. (The 4 wires you have carry the brake light, running light and turn light signals for your trailer, plus a ground: white = ground, brown = running/brake lights, green = right turn signal
    view full answer...

  • When to Use a 20 or 30 amp Circuit Breaker When Installing Brake Controller
  • You'd want to use the 20 amp circuit breaker like # PK54220PL unless your trailer has more than two brake axles. If that's the case you'd want to use the 30 amp breaker # 38630.
    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...

  • Brake Controller Recommendation and Installation on a 2003 GMC Sierra with or without Factory 7-Way
  • I did a little research and found that the Dexter Predator, # 58-8, is for 2 to 4 brakes. So if each wheel on your two axle trailer has a brake assembly, or just two of them, this brake controller will work. Brake controllers are not vehicle or trailer specific, so you will be able to use the best one for your application. I recommend going with a proportional controller because they offer the best and safest braking, and will reduce wear on both the trailer and tow vehicle brakes. I
    view full answer...

  • Installing a Brake Controller on a 2016 Chrysler Town and Country Van
  • The 2016 Chrysler Town and Country did not come with a factory installed tow package and a 7-way trailer connector. You will have to hardwire in a 7-way and the all the wiring so you can install your controller. None of the wiring is pre-installed on this model vehicle. The first thing you will need to do is wire in a 4-way flat trailer plug if you have not already done so. You will need a wiring harness, I recommend the Tekonsha T-One harness, # 118534. This harness is custom-fit to
    view full answer...

  • Brake Controller Installation on 2006 Ford F150
  • The brake controller installation on your 2006 F150 is pretty easy. The connector for the brake controller is located under the dash, behind and to the right of the OBD port as shown in the video I've linked for you. You'll need the brake controller wiring adapter, part # 3035-S. The adapter will plug into the connector, and the bare wires on the connector would wire to your Dexter Predator brake controller, color for color. If your vehicle is equipped with the 7-way trailer connector,
    view full answer...

  • Can Trailer Brakes be Added to Motorcycle Trailer Axle
  • When adding brakes to a trailer the first thing you will need is a brake mounting flange on the axle. If you do not have a brake flange I recommend part # 4-35. This should be welded in place by a professional welder because it needs to be square and concentric. Beyond that step we have to first determine what hubs/spindles you have on your trailer so that we can first fit a hub/drum (if available) to it and then install assemblies as well. If you check out the help article
    view full answer...

  • Location of Brake Controller Connector on 2012 Ram Truck
  • The connector you are looking for will be located taped to another larger wiring harness just to the right and above the emergency brake pedal, as shown in the photo I have edited for you. You can confirm that this is the correct connector by testing it with a circuit tester like part # 40376. One pin should show a constant 12-volt power supply, another should show voltage only when the brake pedal is pressed. Unfortunately, my contact at Tekonsha was not able to shed any light on
    view full answer...

  • Trailer Brake Controller Recommendation for a 2014 Chevy Silverado 1500
  • If you are concerned there is no where to mount a brake controller (something that comes up a lot since truck interiors are more and more car-like) then I have the perfect solution for you. You can use the Hopkins InSIGHT # HM47297. But you will also need wiring harness # 3016. You will need to cut off the end that plugs into the controller on the harness and the end of the plug on the controller box and splice the wire color for color. The other end of the harness will plug into the
    view full answer...

  • Where Do the 4 Wires of a Brake Controller Go for Installation in Vehicle
  • The four wires and their functions are: White: Ground wire, connected to negative side of battery. Blue: Electric brake wire, ran to the brake output circuit of your 7-way with 10 gauge wire like # 10-1-1 sold by the foot. Black: 12v power wire, connected to the vehicle positive battery terminal with a 40amp circuit breaker, part # 9510. Red: Stoplight switch circuit. This will get run to the wire on your stoplight pedal assembly that sees voltage only when the brakes are applied.
    view full answer...

  • How to Install a Trailer Brake Controller on a 1996 Dodge Ram 1500 with Factory 4-Way
  • On a 1996 Dodge Ram that came with a factory 4-Way trailer connector there is a factory harness you can plug into to install a brake controller. The harness is located underneath the dash, to the left of the steering column, taped to another harness near the emergency brake pedal. I have included a link to a video that should help. For the Dexter brake controller, # 58-8 you referenced, you would need wiring harness # 3020-P. To wire in your 7-Way that you have you will need to hardwire
    view full answer...

  • Brake Controller for Towing a Trailmaster Trailer with a Harley Electra Glide Classic Motorcycle
  • I have spoken with small tent trailer manufacturers about which brake controllers are best for their trailers with brakes and found that they recommend using a a time delayed brake controller for their trailers. They said that many of their customers have excellent performance from the Activator electric trailer brake controller by Draw-Tite, # 5100. The advantage of a time delayed brake controller on a motorcycle is that it can be positioned in any way, so you can easily find a mounting
    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...

  • 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...

  • 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...

  • 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...

  • Can Brake Controller Wiring Harness from a 2001 Chevy Tahoe Fit a 2006 Chevy Silverado
  • The wiring harness for the 2001 Chevy Tahoe, # 3025-S, is pinned out differently than the harness needed for the 2006 Chevy Tahoe. However, you can re-pin the 3025-S. With the blue locking tab on top, the white wire goes into the top left spot, the red goes in the bottom left spot. Black goes in center right and blue in bottom right. I have included a picture that should help.
    view full answer...

  • Connection of Blue Trailer Brake Control Wire on a 2001 Chevy Silverado.
  • The blue wire is the brake feed wire for the trailer brakes. When you plug in the adapter, item # 3025-S if you need one, the wire is attached to the blue wire on the adapter which is connected to the blue wire on the brake controller. From under the hood the blue wire with the connector that needs to be cut off is ran to the 6-Way or 7-Way connector at the rear of the vehicle and attached to the brake circuit in the connector. If you use the Brake Controller 7 & 4 Way Installation
    view full answer...

  • How to Wire a Brake Controller on a 1999 Chevy Suburban K1500
  • Your 1999 Chevrolet Suburban will need to be hard wired for installation of a brake controller. The Suburban did not get the wiring update that the pickup did until the 2000 model year, so the Universal Brake Control Wiring Adapter, item # 3025-S, will not work on your Suburban. You will need to splice the red wire from the back of the brake controller to the wire at the back of the brake pedal switch that carries power only when the brake pedal is pressed. You will also need to wire
    view full answer...

  • Do Wire Colors on Hayes Brake Controller Match Wiring Harness 20263 for 2000 Chevy Silverado
  • Yes, the colors on the harness # 3025-S and those on the brake controller, HA81745, will match up. White is ground, black is 12 volt power, red is input from the brake switch, and blue is output to the trailer brakes. To complete installation, there may be some additional connections you will need to make under the hood. I have included a link to an FAQ article explaining these under hood connections. But for a Hayes controller you will want to use the matching Hayes harness for the
    view full answer...

  • Brake Controller Install Harness Recommendation for 2000 Chevy Silverado 2500
  • The harness you need is the part # 3025-S. You will wire the harness by color to your controller and then will plug the brown connector into the junction box under the dash of your truck. I attached a help article on installing controllers in your generation truck for you to check out as well.
    view full answer...

  • Brake Controller Wiring Adapter for a 1999 Chevy Suburban
  • I am sorry, but the Universal Brake Control Wiring Adapter 1999-02 Chevrolet, GMC, Cadillac, item # 3025-S, is only for the 2000-2002 Chevy Suburban with a New Body Style. It does not fit the 1999 Suburban. I just checked for you, and we do not have a custom brake controller adapter for the 1999 Suburban, which leads me to believe there is not a port available for the brake controller under your dash. Some models do have the brake (blue) and hot lead (orange or red) wires already ran
    view full answer...

  • Do the Wires on the Brake Control Wiring Adapter Match Up Color for Color with the Brake Controller
  • Yes, the wires on the adapter, item # 3025-S, will match up, color for color, with the wires on your brake controller. If you have a proportional brake controller the brakes will not energize when setting still because the controller uses the forward momentum of the vehicle to energize the brakes with the appropriate amount of power to stop the trailer. The controller will need to be adjusted, after warming the brakes up a bit by starting and stopping a few times, using the directions
    view full answer...

  • Troubleshooting Brake Controller on 2002 GMC Sierra 2500 HD
  • First, use a circuit tester like part # 40376 on the black wire exiting the rear of the controller to verify that power is reaching it. If not, there is a 20 or 30 amp fuse in the power distribution box, located under the hood on the drivers side fender, that is most likely blown. Once the fuse is replaced, you will want to inspect the brake output circuit on the trailer connector, tracing it back to the trailer brake magnets to determine what caused the fuse to let go. Skipping this step
    view full answer...

  • Do Wires On Brake Control Wiring # 3025-S Match Up Color To Color on a 2002 Chevrolet Avalanche
  • To connect the Universal Brake Control Wiring Adapter, part # 3025-S, you would plug one end to the brake control port underneath the dash that should be located to the left of the steering column. The wire colors for this adapter will match up color for color to the wires coming out from the brake controller. The wire functions traditionally on a brake controller are as follows: Red Wire - Stop Light Switch Blue Wire - Trailer Feed, Power To Brakes Black wire - 12 volt power White
    view full answer...

  • What Is Each Wire on the Universal Brake Control Wiring Adapter, item # 3025-S, Used For?
  • The # 3025-S Universal wiring adapter is not the correct adapter for the 2003 Chevy Silverado 2500 HD. The connector will fit but You will need to remove the blue locking clip and switch the red wire from the top left, looking at the connector with the locking clip in the down position, to the bottom right connector terminal (opposite corner). To get the red wire out you will need to press on a very small locking tab on the connection side of the terminal. This is the only change that will
    view full answer...

  • Troubleshooting a Reliance Brake Controller That is not Operating Correctly
  • It sounds like the brake light switch wire coming out of the brake controller may be wired into the wrong circuit. If you have the older C/K body style with the square shaped front body, then you will need to double check that you have the red wire connected to the brake light switch wire. The wire on the brake switch that needs to be connected should be a light blue wire according to the installation instructions for the Reliance controller. You can use a tester, like # 40376, to
    view full answer...

  • What are the Wiring and Color Codes for a Bully Trailer Brake Controller
  • If you have a Bully TC-301 brake controller it should have the following wiring colors and codes: Black = ground Red = 12 volt power Blue = input from stop light switch Yellow = out to trailer brakes This is different than a connector like # 3025-S. On it the colors are black for 12 volt power, white for ground, blue for output to trailer brakes, and red for input to brake controller. But on a 1996 Chevy Suburban you will need to hardwire in the controller because there is no port
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  • Wiring a Trailer Brake Controller With or Without Factory 7-Way on a 2000 Chevy Tahoe
  • Your 2000 Chevy Tahoe will have a port for brake controller wiring adapter, # 3025-S. You will want to look in the electrical junction box on the drivers side, left of the brake pedal under the dash. I have included an FAQ on installing a brake controller on Chevy and GM pickups that will also apply to your Tahoe. The first two pictures show the box you are looking for and where it and the connection point for the adapter is located. Some models have a factory 7-Way pre-wired through the
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  • Can Brake Controller Wiring Harness from 2001 Chevy Tahoe be Used in 2007 GMC Sierra Classic
  • The 2007 GMC Sierra Classic uses the same brake controller wiring harness as the 2006 GMC Sierra, # 3015-P for a Tekonsha brake controller. The 2001 Chevy Tahoe uses a different harness, # 3025-P or # 3025-S. What you can do if you do not want to buy a new harness is move the wire locations on the end of the connector you have at the end that plugs into the vehicle. It should be configured like the picture I have included for your 2007 GMC Sierra Classic.
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  • Why Does Manual Override Lever of Brake Controller Illuminate Trailer Brake Lights
  • Everything is most likely working just fine. Most modern brake controllers will put voltage on the brake signal circuit they are attached to when the override lever is applied so that your trailer brake lights would come on as you are applying braking power to the towing setup.
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  • Installation of Tekonsha Voyager in a 2001 Chevrolet Suburban 1500
  • It sounds to me as if you have a aftermarket 7-Way and 4-Way trailer connector installed on your vehicle. The Replacement Multi-Tow 7-Way and 4-Way Trailer Connectors for Ford, GM Trucks, item # 30955, should be attached to the factory connector under the vehicle near the spare tire see link. This connection should provide all of the wiring to your trailer connector from the front of the vehicle, except for the blue brake feed wire if the connector is not factory installed. The brake
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  • Brake Controller Installation Details and Running Wires on a 2002 GMC 2500 Pickup
  • The best practice for running wires through the firewall on your 2002 GMC 2500 HD pickup, is to find an existing opening that has a grommet and use that. You'll also want to make sure that you keep the wiring well away from any moving or hot parts. In the absence of an existing opening, you might have to drill to make your own. In that case, make sure you are aware of what is behind the spot where you plan to drill, so you don't drill through anything important. You will need to use
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  • Are the Under Hood Wires Connected for Brake Controller Installation on a 2002 GMC Sierra
  • If your 2002 GMC Sierra has the factory 7-Way tow package wiring installed on it then the under hood wiring is most likely connected to the studs that are found at the power distribution box. If your truck does not have the factory 7-Way tow package wiring, then you will need to connect the wires under the hood. We have a detailed article that shows where to connect the under hood wires, see link, and explains where to attach the brake controller output wire and 12 volt power lead for
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  • How to Wire a Bully Brake Controller to a 2003 Ford F-250 Using a Hopkins Wiring Harness
  • As you have found out manufacturers make their own compatible plugs to match their own brake controllers. It looks like the Bully controller comes with a universal harness with blunt cut wires. You will need to cut the end off the Hopkins harness that plugs into the controller and wire it up as follows: Bully connector black to Hopkins harness white for ground Bully red to Hopkins black for 12 volt power in Bully blue to Hopkins red for stop light switch Bully yellow to Hopkins blue
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  • What to Do if Something is Already Plugged Into Junction Box for Brake Controller on a 99-2006 Chevy
  • When using brake controller wiring harness # 3025-S there should not be anything plugged into the junction box in the required location (top row, second from the left). It should look like the picture I have included. But the truck likely came with a factory adapter and that is what is plugged in. If the wires do not lead anywhere then that is what you have plugged in and it can just be removed or shoved out of the way.
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Info for these parts were:

Expert Research:
Jackie C
Expert Research:
Michael H
Expert Research:
Jameson C
Edited by:
Lindsey S
Updated by:
Lindsey S
Updated by:
Laura H
Updated by:
Alexander C
Written by:
Alexander C

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