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  1. Trailer Brake Controller
  2. Tekonsha
  3. Electric
  4. Proportional Controller
  5. Up to 4 Axles
  6. Under-Dash
Tekonsha BRAKE-EVN Trailer Brake Controller w/ Custom Harness - 1 to 4 Axles - Proportional
Tekonsha

Tekonsha BRAKE-EVN Trailer Brake Controller w/ Custom Harness - 1 to 4 Axles - Proportional

Part Number: TK85BR
In Stock
$112.51
Trailer Brake Controller

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In Use/Installed

The large, digital, LED display and clearly labelled buttons on this proportional controller make it easy to use. Includes 3 levels of boost, a slide-bar manual override, built-in short circuit protection, and automatic leveling. Great Prices for the best trailer brake controller from Tekonsha. Tekonsha BRAKE-EVN Trailer Brake Controller w/ Custom Harness - 1 to 4 Axles - Proportional part number TK85BR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (116)
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Tekonsha Trailer Brake Controller - TK85BR

  • Electric
  • Proportional Controller
  • Up to 4 Axles
  • Tekonsha
  • Under-Dash
  • Under-Dash Box
  • Plug-In
  • LED Display
  • Single Trailer Only

The large, digital, LED display and clearly labelled buttons on this proportional controller make it easy to use. Includes 3 levels of boost, a slide-bar manual override, built-in short circuit protection, and automatic leveling.


Features:

  • Brake controller activates trailer brakes in proportion to your vehicle's braking action
    • Automatically adjusts trailer's braking based on deceleration of tow vehicle
  • Push-button controls are clearly labelled to make the controller easy to use
    • Gain setting lets you adjust the amount of power sent to the trailer's brakes
    • 3 Boost levels let you adjust initial braking power and aggressiveness
    • Slide-bar manual override is within easy reach for controlling trailer sway or stopping in emergencies
  • Large LED display is easy to read
    • Shows braking output as well as diagnostics
  • Built-in short circuit protection keeps your vehicle, trailer, and the controller safe
  • Automatic leveling lets you mount at any angle up or down for an easy installation
    • Controller must be parallel with direction of travel and horizontally level
    • Custom, plug-in wiring harness and mounting bracket with hardware included


Specs:

  • Application: trailers with up to 4 axles (8 brake assemblies)
    • Compatible with electric brakes only
  • Dimensions: 4-1/4" long x 2-3/4" wide x 1-1/8" tall
  • Mounting range: 360 degrees vertically
  • Limited lifetime warranty


Change Settings with User-Friendly Controls

Tekonsha Braken-evn brake controller LED display and buttons

The controls on the BRAKE-EVN are elegantly simple and user-friendly. Use the clearly-marked push-buttons to change the level of gain or boost. Gain lets you set the maximum amount of power that will be applied to your trailer's brakes. Typically, the gain (also known as output) is only readjusted when you experience changing road conditions or if the weight of your trailer changes.


The Tekonsha BRAKE-EVN also features a large LED display that's easy to see so you can check on your current gain setting with a glance, as well as diagnostic information.


Power Boost for Heavy-Duty Towing

The boost setting controls the aggressiveness of your trailer's braking, meaning how quickly the brakes reach the maximum braking level. You can adjust this when you're towing heavy loads and you need more umph to bring your trailer to a stop. Your tow vehicle doesn't need that much power to brake in time, but your heavy trailer does.


Depending on the level of boost, your trailer brakes can start at either 13 percent or 25 percent of the set braking output. What this means is that, instead of starting at 0, the brakes will start at 25 percent and get to 100 percent sooner. This keeps the trailer from pushing your tow vehicle forward.


If your trailer weighs less than your tow vehicle, no boost is needed. But, if you want your trailer to lead the braking, you can select level B1.


Boost Levels:

Approximate Gross Trailer Weight Boost Level Increase in Initial Power Output
Less than tow vehicle GVW B1 13%
Equal to tow vehicle GVW B1 or B2 13% or 25%
Up to 25% more than tow vehicle GVW B2 or B3* 25%
Up to 40% more than tow vehicle GVW B3* 25%

*Both B2 and B3 offer a 25-percent boost in initial power. But the braking curve for B3 is more aggressive than that of B2. This means that, even though you will start out with the same intensity when using these boost levels, you will get an overall more aggressive braking experience with the higher level. So if you use B3, you will reach maximum braking sooner than if you use B2.


To adjust the boost, use the blue push-buttons on the top of the BRAKE-EVN.


Automatic Leveling and Simple Installation

The self-leveling feature of the BRAKE-EVN ensures that the brake controller continues to function even as you drive up steep hills or through the mountains. You can mount it at any vertical angle, and the controller will level itself automatically. But keep in mind that the BRAKE-EVN must be horizontally level and parallel with the direction of travel to work correctly.


The included wiring harness plugs into the BRAKE-EVN at one end and then into the factory port on your vehicle at the other. No need to cut and splice any wires!


Note: 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.


Proportional Braking

What is proportional Braking

The Tekonsha BRAKE-EVN brake controller comes equipped with proportional braking to give you the best towing experience. Proportional braking means that your trailer brakes mimic your tow vehicle's brakes. If you slam on the brakes in your vehicle, your trailer brakes will activate with the same intensity; if you brake lightly, your trailer brakes lightly too. The trailer's braking is in proportion to your vehicle's braking. This saves wear and tear on the tires and the brakes on both your vehicle and trailer.


The BRAKE-EVN uses an internal inertia sensor to detect how your vehicle is braking so it can send the right amount of braking power to your trailer. It measures the inertia of your tow vehicle and activates the trailer's brakes to slow at the same rate. The result is uniform braking across your towing setup. No push-pull action - just smooth, proportional braking every time.



8508220 Tekonsha Break Even Proportional Brake Controller - 1 to 4 Axles

Replaces Draw-Tite 5535

306300 Tekonsha Dual Plug, Direct Install Brake Control Wiring Harness Adaptor

Replaces Tekonsha 3063-P

Installation Details TK85BR Installation instructionsAlternate Instructions TK85BR Installation instructions


California residents: click here


Video of Tekonsha BRAKE-EVN Trailer Brake Controller w/ Custom Harness - 1 to 4 Axles - Proportional

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




Video Transcript for Tekonsha BRAKE-EVN Trailer Brake Controller: The Breakdown

Hi, everybody. Andy here with etrailer.com. And today, we're gonna take a look at this Tekonsha BRAKE-EVN proportional, trailer brake controller for one to four axles. Now, this brake controller activates your trailer brakes in proportion to your vehicle's braking action. It automatically adjust your trailer's braking based on the deceleration of your tow vehicle. And it activates immediately.

There's no pausing like with time delayed brake controllers. This controller will work with trailers up to four axles or eight brake assemblies. And it is designed for use with electric brakes only. Now, it automatically levels. The internal sensor detects deceleration even if the controller is not mounted level.

And it can be mounted at angles between -20 degrees and 70 degrees in the vertical plane. The boost setting is going to let you adjust the aggressiveness with which the brakes are activated. You can get full power output faster by pressing the plus button, as you see right here, to increase that activation speed, or achieve smoother braking by pressing the minus button that you see there to supply power gradually. This also has a built-in slide bar manual override. Now, this features an easy to read LED display to keep you informed of your trailer's braking.

The display is gonna show the gain setting when the control is activated. And it can also be used to check for connectivity with your trailer to determine your boost setting and to troubleshoot. It is short circuit protected. And let me pull out my ruler here just to give you an idea of its size. The overall width, we are sitting right at 2 3/4 inches wide.

And then the overall length, it's probably better to measure this way. I'm trying to measure the longest points of this brake controller. We're sitting pretty close to 4 1/4 inches long. Try it up here a little bit. Yeah, about 4 1/4 inches long. And then the thickness or the height, however you'd like to describe it, we are sitting right at an inch thick or an inch tall. Now, this is gonna be a quick and easy installation. The mounting bracket, as you can see here, and the hardware to attach the bracket to your controller and the bracket to your vehicle, that is all included. A plug-in vehicle specific brake controller adapter, which is sold separately, can be used for certain applications to reduce installation time. It is important to note that if a custom brake control wiring adapter is not available for your vehicle, one of the following will be required. And I have that on your screen there for you. A 20 amp circuit breaker for two to four brake applications, or a 30 amp circuit breaker for two to four, I'm sorry, for six to eight brake applications. And you see those item numbers for those circuit breakers on your screen. Also, I would like to mention that if you are in need of a seven-way plug at the back of your vehicle, check out etrailer.com's exclusive seven and four-way brake control installation kit. The item number for that is on the screen as well. Now, this does have a limited lifetime warranty. And that's gonna conclude our look today. I do hope that it was helpful for you. Again, my name is Andy. Thank you for joining me..

Ratings & Reviews

4.7

114 reviews
The large, digital, LED display and clearly labelled buttons on this proportional controller make it easy to use. Includes 3 levels of boost, a slide-bar manual override, built-in short circuit protection, and automatic leveling.

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Very easy to install



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very nice looking I can't what to try it out



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So easy to install i couldn't believe it



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Plugged right in, no tools needed. Matches the brake pedal force of the truck. Works great!



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Best customer service to fit my truck.



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Works great, the install was super easy, and fast, thanks for the suggestions.



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Plug and play. Very easy and works gre at!!



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Installation was easy, once I watched the video. It seems to work fine, only tried it out once.


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  • How To Install a Brake Controller on 2017 Mercedes-Benz Sprinter 3500
    You can hard-wire in a brake controller, and it seems that there are not a lot of the Sprinter 3500 models that are pre-wired, at least from what I've seen in my research. I have not seen any reports that this isn't possible, and we even have an installation video to walk you through the process. The way to find out whether or not the plug is present by using a circuit tester like the # PTW2993 and testing for a hot wire when the brake is pressed- it's possible that one of the plugs that...
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  • Harness To Install Redarc Tow Pro Elite in 2021 and 2008 Sprinter
    To install a Redarc Tow Pro Elite part # RED63RR on your 2021 Sprinter requires the install harness part # 3030-P which at this moment is on back order. For a 2008 Sprinter the correct harness instead is the part # 3063-P.
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  • Where is Brake Controller Install Connector on 2020 Mercedes Benz Sprinter 3500
    Your 2020 Mercedes Benz Sprinter 3500 with the factory tow package does have a brake controller install port like what the part # 3063-P is designed to plug in to. On your Sprinter you will find the harness underneath the driver seat. It will be a green connector you are looking for like what you see in the attached picture. Then for a brake controller the Brake EVN # TK63VR would be a really great option that is very reliable and performs great.
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  • Does the 2024 Mercedes-Benz Sprinter 2500 have the Plug-In for Brake Controller Harness?
    Hello Brad, I was able to see the video that you referenced that our Brad did. His video is on a 2020 Sprinter 2500, we know the plug-in for the brake controller was on the 2020, the information I am finding on the 2024 is that it may or may not be there. The best way to know if it is there or not, is to go look. I do not have a 2024 Sprinter 2500 here right now to go look for myself, and we have not installed one on that year either for me to watch the video. I am showing that if it...
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  • Length of Brake Controller Adapter 3030-P
    The # 3063-P harness is 5 feet long so you won't have an issue installing your controller 3-1/2 feet from the connector under your dash.
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  • Parts Needed to Install Brake Controller on 2019 Mercedes-Benz Sprinter 2500 With 7-Way
    Since your 2019 Mercedes-Benz Sprinter 2500 has the factory 7-way, that means you'll have the factory tow package, so I assume by "wiring" you are referring to the wiring adapter needed to plug into the brake controller (it will plug into the green port under your driver's seat as in the accompanying photo). The correct part for your '19 Sprinter 2500 is the Tekonsha Custom Wiring Adapter # 3063-P. Then for a brake controller that works with that adapter, there are a couple options I...
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  • Are There Instructions To Route Tekonsha Brake Controller Harness On Mercedes Sprinter 2500
    The Tekonsha Custom Wiring Adapter for Trailer Brake Controllers part # 3063-P which is a fit for a Tekonsha Trailer Brake Controller like the Prodigy P3 part # 90195 on a 2018 Tiffin Wayfarer Motorhome with Mercedes-Benz Sprinter 2500 Chassis does indeed plug-in under the seat. In order to route the harness up to the dash where you would ideally be mounting the brake controller you'd need to find a path free from moving components. That said, the manufacturer does not provide exact instructions...
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  • Where is the Trailer Brake Controller Plug on a 2020 Mercedes-Benz Metris
    The trailer brake controller plug on a 2020 Mercedes-Benz Metris is located on the driver side behind the center console, under the sound deadening mat in the top left of the passenger footwell. I have attached a photo of this as well. I recommend using the Tekonsha Prodigy P3 Trailer Brake Controller part # 90195 with Tekonsha Custom Wiring Adapter for Trailer Brake Controllers part # 3063-P which makes for a plug-in-play install. If you don't want to do all the work finding the connector...
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  • Parts Needed to Install Brake Controller in 2023 Sprinter
    I checked with Tekonsha and a few other brake controller manufacturers and they state that your 2024 Mercedes Sprinter 3500 does not have an OEM brake controller install port under the dash like previous models so you would have to hardwire in the Prodigy P2 # 90885 with the universal install harness it comes with and the brake controller install kit part # 5506 which wires to the OEM 7-way you have.
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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Wilson B
Updated by:
Wilson B
Employee Amanda K
Written by:
Amanda K

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