Tekonsha Trailer Brake Controller
- TK88BR
- Electric
- Proportional Controller
- Up to 4 Axles
- Tekonsha
- Under-Dash
- Plug-In
- Under-Dash Box
- Single Trailer Only
- LED Display
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
301600 Tekonsha Brake Control Wiring Adapter with 2 Plugs
Replaces 22295, 20275, and 3016-P
Installation Details 
Alternate Instructions
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