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  1. Trailer Brake Controller
  2. Tekonsha
  3. Electric
  4. Proportional Controller
  5. Up to 4 Axles
  6. Indicator Lights
Tekonsha Voyager Trailer Brake Controller - 1 to 4 Axles - Proportional

Tekonsha Voyager Trailer Brake Controller - 1 to 4 Axles - Proportional

Our Price: $90.77
You Save: 18%
Trailer Brake Controller
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Shipping Weight: 0.71 lbs
Tekonsha Trailer Brake Controller - 39510
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Product Expert Kathleen M

Is this right for you? Product Expert Kathleen M says:

Yes, if you:

  • Have a large camper or newer brakes on your trailer and want to avoid any premature wear
  • Tow your trailer occasionally or just for short trips

No, if you:

  • Have hydraulic brakes on your trailer
  • Switch trailers or vary the load on your trailer often and would get frustrated by not having a preset option or number to guide you
  • Like having a clear indicator of the settings like you'd see with an LED screen
Proportional brake controller can be mounted within a 90-degree vertical range. LED monitor indicates braking action of trailer. Fine-tune power adjustment lets you set braking intensity to suit your towing needs. Great Prices for the best trailer brake controller from Tekonsha. Tekonsha Voyager Trailer Brake Controller - 1 to 4 Axles - Proportional part number 39510 can be ordered online at or call 1-636-306-4830 for expert service.
  • All Info
  • Reviews (640)
  • Q & A (0)
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  • Why etrailer?

Tekonsha Trailer Brake Controller

  • Electric
  • Proportional Controller
  • Up to 4 Axles
  • Tekonsha
  • Indicator Lights
  • Under-Dash Box
  • Dash Mount
  • Manual Leveling
  • Up to 90 Degrees

Proportional brake controller can be mounted within a 90-degree vertical range. LED monitor indicates braking action of trailer. Fine-tune power adjustment lets you set braking intensity to suit your towing needs.


  • Brake controller activates 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
  • Multiple mounting options
    • Position within 90 degrees in the vertical plane
  • Fine-tune adjustment for braking power and aggressiveness
  • Green LED monitors a secure connection with trailer
  • LED monitor changes color to alert you to braking action of trailer
  • Built-in, slide-bar manual override
  • 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
  • Dimensions: 3" wide x 5" long x 1-1/2" tall
  • Mounting: between -20 degrees and 70 degrees in the vertical plane
  • 5-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 the same manner.

As long as the Voyager controller is mounted properly and is pointed in the direction of travel, it will sense - via an internal inertia sensor - how your tow vehicle brakes. This inertia-based 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 and Sensitivity Adjustment

Getting the braking power you need for your application is simple with the Voyager. First, set up the controller as indicated in the instructions, making sure that the internal sensor is properly leveled. Then set the overall power by adjusting the power knob while you test out your rig. The power should be just enough to achieve maximum braking without locking up your trailer brakes.

Once you have the overall power set, you can fine-tune the power output by adjusting the sensitivity of the internal sensor. Use the level knob on the side of the Voyager to achieve your desired degree of intensity. Move the knob toward you (clockwise) to delay the power output, creating braking sensitivity that is ideal for lightweight setups. If you are towing a heavy load, you may want the trailer to brake more aggressively to prevent it from pushing your tow vehicle. To get more intense stopping action, turn the level knob away from you (counterclockwise).

LED Indicator

On the front of the Voyager there is an LED indicator that is designed to keep you aware of the braking action of your trailer. Typically, this light burns green to indicate that your trailer and tow vehicle are securely connected. When the light is green, only 5 milliamps are being drawn, thus minimizing drain on your vehicle's battery.

As you apply the brakes in your tow vehicle, the LED will change to red. This indicates that power is being sent to the trailer brakes. The light will also burn red whenever you activate the manual override lever.

During installation and setup, this light is used to ensure that the Voyager will be able to function correctly. Proper leveling of the internal sensor is crucial to the operation of this brake controller. When the sensor is level, the LED will change to a shade of orange.

Simple Installation

The Voyager is designed to be mounted in your cab at a vertical angle that is between -20 degrees and 70 degrees.

Correct Voyager mounting90-Degree Voyager mounting

Note: The Voyager must 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.

Once the controller is mounted, you must level the internal sensor. First, set the overall power to maximum using the knob on the side of the controller. Then, while pressing the tow vehicle's brake pedal, adjust the level knob on the other side of the brake controller (this is the same knob that is used to fine-tune the power output) until the LED monitor is a shade of orange.

Installation requires that you either purchase a custom wiring adapter designed to plug into the Voyager or that you hardwire the controller directly into your vehicle. To hardwire the Voyager, 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.

9030 Tekonsha Voyager Electric Brake Control

Item # 39510

Installation Details 39510 Installation instructions

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Tekonsha Voyager Trailer Brake Controller - 1 to 4 Axles - Proportional - 39510

Average Customer Rating:  4.8 out of 5 stars   (640 Customer Reviews)

Proportional brake controller can be mounted within a 90-degree vertical range. LED monitor indicates braking action of trailer. Fine-tune power adjustment lets you set braking intensity to suit your towing needs.


The Tekonsha Voyager trailer brake controller works well in my 99 Silverado 1500, which was easy to setup for my trailer. The option to allow for different settings of aggression for the trailer braking has allowed the stopping with different loads to be graceful with the turn of a knob. Decided to install the controller in CD storage with velcro for a nice look. Easy access when in place during use for easy observation and twicking during operation. The wife can assist with the twicking while I am driving. Excellent product!

The Voyager unit has been working flawlessly this past year. Excellent product that keeps on working!
Gary P - 12/27/2021


etrailer makes the purchase easy. I have always used Tekonsha Voyagers, and on my new truck (2015 Silverado) I also wanted the convenience of having the plug and play wiring harness. etrailer had exactly what I needed and was very easy to find on the website. Installation was flawless and clean thanks to the good hardware supplied. Very excited to put some trailers behind the truck with the stopping power confidence that comes with the Voyager.

Working great! The mandatory leveling process was successful and the unit functions as intended.
Corey M - 09/23/2021


This was an easy install on my 2019 GMC truck using the appropriate wiring adapter. Instructions for setting up the control were clear. After a few adjustments my trailer brakes worked as they should. Minor adjustments of the controller are needed from time to time, but overall the controller is reliable. Good value.

The brake controller continues to function without issue.
Jake - 08/21/2022


Not even 2 years after install all rusty. Electric brake pin broke due to rust.
Impossible To remove 4 bolt holding connector due To rust. I do not recommend


Good break controller. I used it in my new 2022 Chevy Colorado that did not come with a break controller. On my truck it does require purchasing a separate plug / harness and wiring it into the truck. Then you plug this into the other harness.


Last year I traded my Silverado for a Yukon to tow my 21’ camper. The hitch tube was integrated into the Yukon bumper and those 20” wheels raised the tube height 7”. I purchased your 13” drop shank to level my hitch/camper connection but experienced trailer “sway” because of that long shank. I fabricated a set of “sway bars” to tame that movement. Now I can tow my camper safely. Thank you for making this long drop shank available for taller tow vehicles!


Completely plug and play installation and works flawlessly, very happy with this unit. I also ordered the exact harness for my 2005 f150 with tow package. Here are a couple of hints that may be helpful. My installation also required a 30 amp cartridge fuse to be installed in the fuse panel in location #105(electric trailer brakes) under the dash on the passenger side. I also installed a relay in location r05 (trailer tow battery charge) but I don't think this is needed for the controller to function. I still had the original trailer brake kit and it had the additional fuse panel instructions and the relay. The owners manual showed where the 30 amp fuse and relay plugs in. You cannot test this unit until a trailer with brakes is connected, ie the led will not light up until it senses a brake circuit.


Difficult to adjust. It would grab too hard, so I would adjust the power and/or level down, then the trailer was pushing me. Adjust up, then it grabbed too hard again. After a few months of very light use, it started grabbing very hard even with the power and level turned way down, although that may have had something to do with the fact that water got into my 7-way plug and made the controller come on when nothing was connected. I strongly recommend upgrading to the primus or other model with digital voltage display and boost function. I have a primus now, and it performs much better.


Very easy to install. Mounted on lower dash and ran the harness under dash tucked away with some zip ties. Everything was plug n play into factory harness on a Nissan Titan So far works as should , have about 20 hrs trailing use. I would buy again

Works great used every weekend trailering race car make sure to get harness w controller. Very easy to install plug n play Nissan Titan
William - 10/26/2021


This is my second Tekonsha; I had to replace my 10-year old one after I accidentally broke it.

This one is a bit of an upgrade, and is easily able to lock up the disc brakes on my 15,000 lb trailer. Adjusting it properly, I'm able to brake as though there were no trailer at all. Set it, and forget it. It doesn't get any easier than that.


Installed in my 2018 Silverado Custom. I ordered the additional wiring harness and the install took less than thirty minutes. Plug and Play at its simplest. Thank You etrailer.


Plug 7 play, works great!

Still working great
Mike - 10/20/2022


The product was easy to install with the help of the F-250 adapter. I followed the direction and the product worked just as it was advertised from If I had to give the Tekonsha Voyager Trailer Break Controller a star rating from 1-5, I would give it a 4.5.


I've put a half dozen of the Voyager controllers in different trucks over the past twenty years, the only controller I will use. They're great.


Received this yesterday and was able to install it today. Instructions were very easy to follow and the only problem I had installing it was contorting myself to install the bracket. Once I got the bracket in place the rest was a piece of cake. Went for a test drive as the instructions suggested and did have to tweak it a little but it's doing exactly what I expect it to do. I'll be hauling a John Deere Tractor and wanted to make sure the brakes on the trailer worked.


I was looking for a basic controller to activate the trailer brakes on my Rockwood 276HW pop up, after spending an excruciatingly stressful weekend adjusting brakes/bearings. I found it w the Voyager which, with the previously reviewed harness/connector, attached to the built in connection on my 2020 Tacoma flawlessly. A no-surprise product with the installation made easy w thorough instructions. Brakes work great. Very happy!


your company provide me excellent products all time .
this is the great company.
congratulation .


Wasn't a replacement as much as a new install but worked perfectly on my 203 Avalanche after finding the right video which explained the additionally connection near the fuse box.


Excellent product, install went great following the video on Shipping took longer than estimate at checkout, but still made it. And just having it in stock made etrailer better than my local store, which did not.


I have a 12 ton backhoe pro trailer it has 4 short axles 2 on each side. It does not have dual wheels. It has 8 wheels with 8 sets of brakes so I needed a controller for 4 axles. This controller has worked well the settings are a little touchy but it works great. My truck is a 4 speed and i usually have the controller set so if I let off of the gas like coming to a stop the controller slows the whole rig without touching the brake. I like the indicator light to see what it is doing and that it is connected right


Hard to adjust. Had tech at rv place adjust still grabby. Should have got more modern controller


This controller is outstanding in how easy it is to setup. I upgraded to this model after I had wiring problems with a less expensive unit. etrailer staff was outstanding in their support helping me with that problem and allowing me to upgrade to this controller.


Always great service for my trailer nee ds


Provides braking as advertised. The mount is a bit obtrusive and permanent. If you're looking for a smaller form-factor or the ability to move between vehicles, look at more expensive models.


Definitely was surprised with a base model controller. I ordered the product and it arrived much sooner than I expected with the correct wire. Very satisfied. Will be trying it out very soon.

It works well. No issues 1 year in.
Karl - 05/11/2022

Show More Reviews

See what our Experts say about this Tekonsha Trailer Brake Controller

  • Rear Left Side Trailer Brakes on 2 Different Trailers Overheating Using Voyager Brake Controller
    A brake controller such as the Voyager # 39510 sends back the same voltage to all of the trailer brakes equally so there really isn't a way that it could be the problem. It is strange that it is the rear brake and not the front brake since the front brake would get the power first. It could be an issue with the trailer connector on the 2012 Ford van. If there is corrosion on the pins or inside of the trailer connector that could be producing a short. To test the brake controller you...
    view full answer...
  • Tekonsha Brake Controller Indicator Light Flashes on a 2005 Dodge Ram when Truck is Off
    Brake controllers will send back a little bit of voltage to check for a trailer. The Voyager, # 39510, indicator light draws only 5 milliamps of power at idle. It would take over 10,000 hours to drain the tow vehicle battery. But since the indicator light is flashing that could indicate that the controller thinks something is drawing power. The likely cause is a dirty or corroded trailer connector. Check the vehicle side trailer connector to make sure it is free of corrosion inside and...
    view full answer...
  • Instructions and Manual for the Accu-Power Digitrac II Trailer Brake Controller
    Yes, I can email you a copy of the installation instructions/manual for the AccuPower Digitrac II trailer brake controller. This controller went out of production in 2009 so it hasn't been too long. The instructions I will email you are the most current. If you are having a specific problem I may be able to help.
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  • Operation Instructions for Tekonsha Voyager Brake Controller # 39510
    The installation and operation instructions for the Tekonsha Voyager brake controller # 39510 are linked for you. I've also linked a review video for this product.
    view full answer...
  • Tekonsha Voyager Trailer Brake Controller Not Working on 2017 Toyota Tacoma
    If you are not seeing a green light on the Tekonsha Voyager Trailer Brake Controller # 39510 after you have connected the trailer to your 2017 Toyota Tacoma, I recommend first checking the trailer and vehicle connector for any corrosion or debris that may be preventing a secure connection with your vehicle. Simply cleaning any dirt you find may resolve your issue. Next, on the trailer side, check to make sure all your ground connections are made to clean, corrosion free bare metal surfaces....
    view full answer...
  • Troubleshooting Tekonsha Voyager that Does not Apply Trailer Brakes Unless Manual Override is Used
    There are a few things that can be checked fairly easily. The first is the inertia sensor. Inside the Voyager is a little pendulum that swings according to your braking, just like when you are pushed forward into your seat belt when you brake hard. This sensor reads how hard you are braking and sends the appropriate level of braking power to the trailer. The knob on the left hand side is the sensor level knob. It maye need to be adjusted if it got bumped. The power or gain knob on the...
    view full answer...
  • What Do the Level and Gain Setting Do on a Tekonsha 9030 Voyager Brake Controller
    On the Tekonsha Voyager brake controller, part # 39510, there are seven levels of brake intensity. You will need to decide how much brake you want applied to your trailer in relation to the amount of brake you are applying in your vehicle. For instance, let us say you are hauling a trailer that is heavier than your vehicle. If you are only lightly riding your brakes, you will need a little more power going to the brakes on your trailer to accomplish the same effect. In a case such as...
    view full answer...
  • What Parts Are Need to Install Tekonsha Prodigy Brake Controller on a 2006 Kia Sorento
    Yes, would be able to use the same brake controller in your 2006 Kia Sorento. You will need to hardwire the controller to the Sorento and add a 4-Way and 7-Way connector at the back of the Sorento. First you will need to install a 4-Way trailer connector. The T-One harness for your 2006 Kia Sorento is part # 118307. After you install the 4-Way, you will need to install a 7-Way trailer connector. The 4-Way connects to a matching connector on the 7-Way, part # ETBC7. There are 4 loose wires...
    view full answer...
  • Troubleshooting Tekonsha Voyager Brake Controller Whose LED Light Stays On
    What you are experiencing is not normal. How have you wired the controller to the factory harness? The colors DO NOT match up color for color. Please confirm that it is wired correctly. The red wire on the factory harness matches up to the black wire on the controller. The light blue harness wire attaches to the red wire on the controller. The black wire on the harness attaches to the white wire on the controller, and the dark blue harness wire attaches to the blue wire on the controller....
    view full answer...
  • Troubleshooting Tekonsha Voyager 9030 Part # 39510 Set Up Process
    If the wiring is done correctly, chances are the controller has not been set up properly. I can run through the first steps of set up. I will also include a link to the full instructions. Once installed the power and level settings must be adjusted. First check to see if the controller is installed properly. It cannot be tilted left or right. The nose of the controller can be pitched down -20 degrees or up 70 degrees. If the controller is not in this range, the sensor will not function...
    view full answer...
  • Wiring Diagram Tekonsha Voyager Brake Controller # 39510
    Yes we can help. To the right there is a picture that has a diagram of how most brake controllers wire up, if you click it you will be able to see an enlarged version of the picture. Below you will find a link to the installation instructions and to wiring instructions for wiring brake controllers. All brake controllers wire pretty much the same with a white ground wire, a black power wire a red brake switch wire and a blue brake feed wire that goes to the trailer brakes. If you would...
    view full answer...
    Image 1 for
  • Trailer Brakes Locking and Grabbing when Using a Tekonsha Voyager 9030 Part # 39510
    The first thing to check would be the sensor and power settings on the Tekonsha Voyager. If those knobs get bumped the sensor level can be offset and the brake controller will think you are braking harder than you actually are and end up sending more current to the trailer brakes than needed. The power knob could have gotten turned as well which would cause the brake controller to act more aggressively. If the brake controller it self has been bumped tilted about 70 degrees or below -20...
    view full answer...
  • Troubleshooting Tekonsha Voyager That Only Activates Brakes with Manual Switch
    For some reason, your brake controller is not getting the signal that you are pressing your brake pedal. That signal comes along the red wire of the brake controller. The wire should be run to the stop light circuit. This is either done by hardwiring up to a switch on the brake pedal or if your vehicle has a tow package there should be a port that you plug into that is pre-wired with the necessary circuits. If you hardwired the brake controller, trace the red wire from the brake controller...
    view full answer...
  • Green Light Remains on Constantly On a Tekonsha Voyager 9030 with Trailer Unplugged
    If the green light on the Tekonsha #9030 Voyager Brake Activator, item # 39510, is remaining on when the trailer is not connected to your vehicle it means that the brake controller is sensing a load on the blue brake output wire. Many times when this occurs there is green or white corrosion that has formed inside the trailer connector at the rear of the vehicle. I would check the front and back side connections inside the connector to ensure that the connections are clean and that corrosion...
    view full answer...
  • Why do the Trailer Brakes Lock Up When Ignition is Turned On
    If your trailer brakes are locking up as soon as the ignition is turned, the issue is that you are getting power on the stop light wire as soon as you turn your key. This most likely means that the red stoplight switch wire from the brake controller is connected to wire that gets power with ignition, instead of the correct wire coming off the brake pedal. Use a circuit tester on the wires coming off your brake pedal to determine which wire gets power when the pedal is pressed, and has...
    view full answer...
  • Comparing the Tekonsha Voyager # 39510 and Tekonsha Envoy Electric Trailer Brake Controllers
    The Envoy is an older brake controller that Tekonsha does not sell any longer. I do not know much about the Envoy controller so I asked my Tekonsha rep what he thought about the two and he stated that the Voyager is a more effective/reliable and user friendly brake control unit than the Envoy unit. The Tekonsha Voyager, part # 39510, is still sold by Tekonsha, and it has proved to be a valuable brake controller. I have added links to the Voyager instructions as well as a video review of...
    view full answer...
  • No Green Light On Tekonsha Voyager Brake Controller When Trailer is Not Connected to 2009 Silverado
    Your Tekonsha Voyager Electric Trailer Brake Controller, item # 39510, is working properly. The green light is showing that the controller is sensing that the trailer is connected and a complete circuit is present and ready for activation by either pressing the brake pedal or activation the manual slide knob. Once the brakes or slide are applied the light on the controller should go from green to orange to red depending on the amount of power supplied to the brake magnets. If there is any...
    view full answer...
  • Wiring Tekonsha Voyager Brake Controller Part # 39510 to OEM Wiring Adapter on 2007 Dodge Ram 3500
    Depending on the model year, Dodge used two color coding systems on their OEM brake controller wiring adapters. If your adapter has a green wire with a black tracer on it, it would wire as follows: the white wire with a red tracer on the harness connects to the black wire on your brake controller. The blue harness wire with the white tracer connects to the red wire on the brake controller, the green harness wire with the black tracer connects to the white wire on the controller, and the...
    view full answer...
  • Voltage Level On Tekonsha Voyager Brake Activator, # 39510, on 20,000 lb. Tandem Dual Axle Trailer
    On the Tekonsha #9030 Voyager Brake Activator, # 39510, it is a proportional (inertia activated) controller, so if the trailer is not moving and brakes applied it will show minimum voltage like 3 volts or less. The voltage at the box should be 12 volts or a little more when operating. The Tekonsha Voyager controller will work fine with your tandem duals axle. It is designed for 2,4,6 and 8 brake trailers. When the brake controller is connected to the trailer it should show a solid green...
    view full answer...
  • Red Light on Tekonsha Voyager only Comes on With Manual Slide Switch
    The red light indicates that the brake controller is sending full or close to full power. Depending on the power settings you have set on the brake controller, you may not see a red light when braking except when you use the manual switch. Also, if the trailer is not hooked up or the truck is not moving when you press the pedal, you will probably not see the red light. The Voyager checks to make sure the trailer is there and since it is a proportional style controller, it will only send...
    view full answer...
  • Installing Voyager Brake Controller on 2008 Nissan Titan with Factory 5 Wire Brake Control Harness
    Every now and then, a vehicle is made that has a brake controller wiring harness with 5 wires like on your 2008 Nissan Titan. All 5 wires are not necessary to allow the brake controller to function. On your truck, the red/green wire marked brk sig will attach to the brake controller red wire for the stop light. The black wire marked gnd is the ground and will attach to the brake controller white wire. The brown/white wire marked brk out will attach to the brake controller blue wire...
    view full answer...
  • Trouble Shooting a Tekonsha Voyager Brake Controller that does not Apply Brakes with Foot Pedal
    There are a few things that can be checked fairly easily. The first is the inertia sensor. Inside the Voyager is a little pendulum that swings according to your braking, just like when you are pushed forward into your seat belt when you brake hard. This sensor reads how hard you are braking and sends the appropriate level of braking power to the trailer. The knob on the left hand side is the sensor level knob. It may need to be adjusted if it got bumped. The power or gain knob on the right...
    view full answer...
  • Troubleshooting Constant Power on Blue Brake Output Wire on Voyager Brake Controller
    It does sound like there is a short to the brake controller through the wiring or in the internal circuitry of the brake controller. If your brake controller shows no red light, a dim or flashing red light, or the red light starts dim but gets brighter as the power knob is decreased, then this indicates a short to the brake line (blue wire). You would need to check to make sure the wiring is intact on the harness and on your truck including the grounds. If you cannot find a wiring or...
    view full answer...
  • What is the Knob on the Left Hand Side of the Tekonsha Voyager Trailer Brake Controller # 39510
    On the Tekonsha Voyager, # 39510, the knob on the right hand side of the controller is the power knob. This adjusts the amount of power output to the electric trailer brakes. The knob on the left hand side is the level knob. This sets the brake controller sensors to level which is and essential part of setting up the brake controller was it is installed. With the brake controller installed and positioned properly (see instructions linked below), you will then need to set the level. First,...
    view full answer...

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