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Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - GM

Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - GM

Item # 3015-P
Our Price: $16.40
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Install your electric brake controller quickly and easily with this custom wiring adapter. Simply plug one end of the adapter into your brake controller and then plug the other end into the junction box beneath your 's dashboard. 1-800-940-8924 to order Tekonsha accessories and parts part number 3015-P or order online at Free expert support on all Tekonsha products. Great prices and Fastest Shipping for Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - GM. Accessories and Parts reviews from real customers.
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2003 Chevrolet Suburban - Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - GM

  • Trailer Brake Controller
  • Wiring Adapter
  • Plugs into Brake Controller
  • Tekonsha
  • Vehicle Specific

Install your electric brake controller quickly and easily with this custom wiring adapter. Simply plug one end of the adapter into your brake controller and then plug the other end into the junction box beneath your 's dashboard.


  • Adapter is wired for GM trucks and SUVs from 2003 to 2006 and 2007 classic body style trucks
  • Wiring adapter eases installation of your electric brake controller
  • Custom connector end plugs into the electric junction box beneath the dash of your vehicle
  • Other end plugs into the back of your electric brake controller
    • Compatible time-delayed brake controllers: Draw-Tite Activator I (5100), Draw-Tite Activator II (5500), Draw-Tite Activator III (5520), Draw-Tite I-Command (5535), and Tekonsha PowerTrac (39523)
    • Compatible proportional brake controllers: Tekonsha Prodigy (90185), Tekonsha P2 (90885), Tekonsha P3 (90195), Tekonsha Primus IQ (TK90160) and Tekonsha Voyager (39510)
  • Limited 1-year warranty

Installation of Tekonsha Brake Controller Adapter

Junction BoxBrake-Control Adapter Port

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 install your electric brake controller you need to connect the wiring of the controller to your vehicle. Certain manufacturers offer pre-wired options, typically known as tow packages, wherein these wires are run for you from the dash to the trailer connector on the back of your vehicle. Often, a brake controller wiring harness is included with your tow package. This harness plugs into a port beneath your dash and connects to the four wires of the brake controller. If, however, you have a brake controller with a plug in place of the four loose wires, you can use the Tekonsha adapter.

This adapter requires no hardwiring. It is designed to plug directly into your electric brake controller for the simplest installation possible. Because there are no wires to connect, installation is not permanent. You can unplug and remove your brake controller at any time and securely stow it away.

3015-P Tekonsha Brake Control Wiring Adapter with 2 Plugs

Replaces 20264

Installation Details 3015-P Installation instructions

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - GM - 3015-P

Average Customer Rating:  4.9 out of 5 stars   (1122 Customer Reviews)

Install your electric brake controller quickly and easily with this custom wiring adapter. Simply plug one end of the adapter into your brake controller and then plug the other end into the junction box beneath your vehicle's dashboard.


Very easy to install and setup. Came with very simple instructions and my old controller bracket was the exact same as this one!


the wiring adapter was good length to reach from the wiring terminal under the dash to the top of the dash where I mounted my brake controller.

The brake controller is working great for the last year. Great product, I use it alot.
David - 02/12/2023

2006 Chevrolet Silverado

Was looking at another system and the website recommended another one (which is the one I bought) and included the additional wiring harness to plug directly into my vehicle. No wiring, just plug and play. One of the easiest and best setups I've ever done! Thank you for your help.


Plugs for both ends fit just right. Using this adapter eliminated having to splice the cord from the Brake Control Unit to the GM supplied plug you get with the Trailering Package. Much more professional.
The only improvement would be to make it at least 6" longer. I placed the unit under the dash near the center of the dash and the cable just made it.

2017 Chevrolet Silverado 1500

Shipping was fast, the controller was easy to install and the etrailer wiring harness made it easy to complete the installation

Mounted it low on the dah, it’s a great controller
Retroron - 02/12/2018


I ordered this brake controller about a week ago and received it today (4-18-20).
Im always working on things and my old lady gets bored, so today was sort of our day! Well i decided id make a bet, 20 bucks i can have it installed in 15 minutes!! She agreed and the race was on!! I ran out, grabbed my drill, a small drill bit, a hex head bit, and got to work! I opted for the removable bracket for worry somebody may break in and steal it.
It marked two holes, drilled them with a very small bit, and then screwed the proveded screws in, i then popped the brake controller in, ran the wiring ( sepratly provided
by, for my specific vehicle, a 2004 gmc yukon)above everything to the plug box under the dash, plugged it in, put the cover back on, and wallah!! 15 minutes exactly!

This thing looks great, works great, and is priced great!


I know this isn’t a pic of the item, BUT it wouldn’t have been possible without. Plug and Play. I bought this because we bought a trailer from a dealer and they required the truck to have trailer brakes. This plugs in under dash, if your truck has 7 pin. I did it without checking to make sure it was activated. Went to dealer, 130 miles away and 4000 feet in elevation to pu trailer. As I was pulling out and first hit brakes the trailer locked up. (There is an adjustment device, that purchased separately, or in a kit pugs into wiring harness that plugs into truck to activate trailer brakes). So I adjusted it and everything worked beautifully. Oh my gosh I have pulled trailers for years but never a TT. Tons of car trailers but never with brakes. Brakes are awesome when going over passes of 5k elevation.

THIS COMPANY ROCKS. The only issues I have had with this company is my own ordering fault. I have used them for years and indirect people to them.



Easy to install. If there wants an improvement I would make it a little longer to provide more options for locating the controller.

2007 Chevrolet Silverado Classic

Fit my application as advertised, looks to be good quality, delivery time was excellent.

No problems. Works great.
Jim - 08/14/2023


Easy install, just plug it in, use the 2 self tapping screws for the mounting bracket, mount the controller with 2 screws, a couple of tie straps, DONE Instructions for use very clear.


I was so stressed out trying to figure out what I had signed myself up for. I saw your video. Ordering the parts was idiot proof, and the installation was so easy an completely no-nothing girl installed it less than 30 minutes. Will definitely be looking to you all the next time I need something. Thank you!

Still loving it! It fit perfectly in both my 2003 suburban and Silverado. It gives me such piece of mind when I am towing my camper.
Victoria - 04/02/2023


His help was spot on! Enjoyed his knowledge regarding the brake controller!

Love the Tekonsha brake controller!!! It work extremely well with the trailer Im pulling!!!
Roosevelt - 04/07/2023


Amazing product. Easy to use and good display. The wire harness to make it plug and go. Make easy for anyone to install.


The plug In adapter has worked flawlessly. I would definitely buy again.

2006 Chevrolet Silverado

Installed myself in about 30 minutes. 06 Silverado crew cab. Fit right up to factory fitting that was hidden up on top of the spare tire.


Just like always from etrailer, the right product, right on time, and right on the money.


Received in a timely fashion. Upon installation, no power. I have sent two different e-mails trying to get support with no reply over the last two weeks.
Looks like a good product, would just like to get a response to get it working.

2005 GMC Sierra

Plug and play simple ae it gets

So far so good
Keith - 03/14/2023


Concerning this wire adapter, I was pleasantly impressed that the wiring was covered in a black wiring loom, very professional looking. With this wiring adapter it makes it extremely easy to connect it to the trucks built in trailer plug as well to the brake controller.

Fitment good, no complaints
bryant m - 12/17/2021

2005 Chevrolet Silverado

Was the correct part, plugged right into my 2005 Chevy Silverado fuse box for easy plug & play.


Easily installed and works great on all my trailers

2004 Chevrolet Silverado 1500

Easy install, works great on my 2004 GMC 1500.


Plug and play.

Worked awesome. Plug and play. Took the 26 foot camper from MD to Cali. No issues.
Jeffrey - 03/05/2023


Easy to connect and use. Works great

One year zero problems
Joseph - 06/29/2023

2004 GMC Sierra

This wiring harness made installation easy in my 04 Sierra.

Show More Reviews

See what our Experts say about this Tekonsha Accessories and Parts

  • Making Connections Under the Hood to Install a Brake Controller on a 2004 Chevy Silverado
    Like you mentioned there are some connections that need to be made under the hood of your 2004 Chevy Silverado to make a brake controller and tow package wiring fully functional. This comes up a lot so we made a handy help article that covers the installation including the connections that need to be made under the hood. I have included a link to it for you. Those 2 wires you mentioned that are together you would not splice them together if I am understand you correctly. One of the wires...
    view full answer...
  • Wiring Harness to Connect Tekonsha Commander Brake Controller to 2004 Chevrolet Suburban
    The wiring harness # 3015-P is the plug you need to get your brake controller connected to the factory wiring on your 2004 Chevrolet Suburban.
    view full answer...
  • Do Wires Need to Be Connected Under the Hood of a 2010 Chevy Suburban To Activate Aux 12 Volt Power
    Yes, there are a couple wires under the hood of your 2010 Chevy Suburban that will need to be connected. Check out the FAQ I attached, about a quarter of the way down there is a picture that shows what connections will need to be made for auxiliary power wire to be functional.
    view full answer...
  • Installing Brake Controller on 2005 Silverado Using OEM Brake Controller Pigtail
    The brake controller pigtail that came with the truck can certainly be used to install the controller. If your brake controller has bare wires exiting the rear, you can indeed wire the controller directly to the pigtail. The wire colors WILL NOT match up color for color, and would connect as follows: Red wire on the pigtail to black wire on the controller Light blue pigtail wire to red controller wire Black pigtail wire to white controller wire Dark blue pigtail wire to blue controller...
    view full answer...
  • LED Indicator Turns Green then Off with Brake Pedal and No Trailer Attached to 2003 GMC Yukon
    If the trailer is not connected, when you step on the brake pedal, the indicator light will show green (indicating that you stepped on the brakes) but no power will be sent back so the light will not turn orange or red. The controller sends a signal back to the 7-Way to see if a trailer is connected or not so that is how it knows there is no trailer connected. The 12 volt circuit on the vehicle side or the battery on the trailer side do not affect the brake controller.
    view full answer...
  • What are the Functions of the Trailer Brake Controller Wires for a 2003 Chevy Silverado
    On the brake controller wiring harness, white is ground, black is for 12 volt power to the controller, red is input from the stop light circuit, and blue is output to the trailer brakes. On some trucks, there are some under the hood connections that need to be made to make everything fully functional. I have included a link to an FAQ article that should help. If everything is connected properly and there is no signal going back to the brake circuit on the 7-Way when the manual override...
    view full answer...
  • How to Install a Trailer Brake Controller on a 2008 Chevy TrailBlazer
    Your 2008 Chevy Trailblazer will have the factory wiring to connect a brake controller under the dash, to the left of the steering wheel, held together with a white tag. The tag should list the functions for the wires. It should be as follows: GM red/black to brake controller black for 12 volt power GM white to controller white for ground GM light blue/white to controller red for input from brake switch GM dark blue to controller blue for output to trailer brakes GM orange not used There...
    view full answer...
  • No Power to Brake Controller Using Factory GM Harness on a 2014 Chevy Silverado 1500
    The factory brake controller harness for your 2014 Chevy Silverado 1500 may not have the same wire colors for functions as the brake controller does. On the brake controller, white is ground, black is 12 volt power in, red is input from the brake switch, and blue is output to the trailer brakes. You can test the factory harness by plugging it in and not attaching the brake controller. Then use a circuit tester such as # 3808 to test the wires on the factory harness. If none of them have...
    view full answer...
  • Troubleshooting Brake Controller on 2004 Chevrolet Silverado
    The first thing that comes to mind is checking to make sure that the connections were made under the hood of your 2004 Chevrolet Silverado. I have attached an article that goes over the step by step instructions. If these connections were made and the additional fuses are in place but your brakes still aren't functioning, please send me an email and we will continue to try and locate the issue.
    view full answer...
  • Brake Controller Wiring Harness Recommendation for 2007 Model Year GM Trucks
    Chevy produced two body styles in model year 2007, the classic and the new body style. If you have the classic model, you would want wiring adapter, part # 3015-P. But if you have the New Body Style, the Tekonsha brake controller would wire directly into the tow package wiring located under the dash above the emergency brake pedal with no adapter needed. I have added a link to an article below showing how to do this.
    view full answer...
  • No Power to P3 Trailer Brake Controller on a 2006 Chevy Silverado 2500HD
    This is a common issue on Chevy trucks like your 2006 Chevy Silverado. There are some connections that need to be made under the hood to make everything fully functional. We actually have an FAQ article that explains what you will need to do to make everything work.
    view full answer...
  • No Power to Trailer Brake Controller Install on a 2006 Silverado 1500
    First, make sure that your # 3015-P harness is pinned out correctly. The red wire should be in the bottom left location (if looking at the back of the end that plugs into the truck). Directly next to the red wire should be the blue wire. Above the blue wire, in the middle right slot, should be the black 12 volt wire. And in the upper right should be the ground. I have incldued a picture that should help. On a 2006 Chevy Silverado it is possible that you will need to make some connections...
    view full answer...
    Image 1 for
  • Troubleshooting a Brake Controller Install on a 2003-2006 Chevy Silverado
    If you have voltage at the pins and all the connections are made under your hood that need to be made, (see attached FAQ if not) then either the wires are run to the wrong places or the brake controller is bad. You should try plugging in your harness into the junction box and then testing the other end of the harness for voltage there and then if that checks out wire up your brake controller. If the controller is still not working then the problem is the controller. Nearly every brake...
    view full answer...
  • After Installing Brake Controller on a 2008 GMC Sierra the Park Assist Feature Stopped Working
    The tow package wire under the dash of your 2008 GMC Sierra should not have anything to do with the park assist feature on the truck so I am not sure how it is affecting it. The orange wire in question is an illumination circuit not used by the brake controller. You should have the Red/black GM wire attached to the brake controller black wire, white to white. light blue/white to red, and dark blue to blue. Check the fuse for the park assist by locating it using the owners manual. It...
    view full answer...
  • Troubleshooting a Brake Controller That Does Not Work with the Brake Pedal on a 2011 GMC Yukon
    Since the trailer brakes work with the manual override, it would seem that the problem is with the stop light switch circuit. This would be the red wire from the brake controller. It should be spliced to either a light blue or orange wire from your Yukon's brake controller harness. I recommend checking that connection to make sure it did not come loose and make sure the wire was not damaged at all. The brake controller has power, so I do not think the fuse is the problem, but if you have...
    view full answer...
    Image 1 for
  • Fuse Location for Trailer Brake Controller on a 2005 Chevy Silverado 1500
    On a 2005 Chevy Silverado 1500, If you are facing the front of the truck looking at the power distribution box, there will be a post at the back left side and a fuse slot near it. It is that fuse slot that you will install a 30 amp fuse. I have included a picture that should help. I have also linked an article that will also help.
    view full answer...
    Image 1 for
  • Does the Tekonsha Plug-In Wiring Adapter for Brake Controllers # 3015-P come with OEM Connector
    The Tekonsha Plug-In Wiring Adapter for Brake Controllers, # 3015-P, comes with a connector for a Tekonsha or Draw-Tite brake controller on one end and the vehicle specific connector for 2003 to 2006 and 2007 Classic body style GM trucks on the other. I have attached the photo that indicates each connector. I have also attached a help article that explains how to install a brake controller on a GM truck for you.
    view full answer...
    Image 1 for
  • Trailer Brake Controller Does Not Work with Brake Pedal on a 2011 GMC Yukon
    You may have a blown stop light or CHMSL fuse on your 2011 GMC Yukon. Use the owners manual to locate the fuses. There also may be some connections that need to be made under the hood of the Yukon to make everything fully functional. This is common on GM vehicles, even those with a factory tow package. I have included a link to a help article that explains these connections.
    view full answer...
  • Brake Controller Does Not Work with Brake Pedal on a 2007 GMC Yukon XL
    The likely issue is that a fuse is missing or there are additional connections that need to be made under the hood of your 2007 GMC Yukon XL. This is common for GM trucks and SUVs and it is easy to get everything working. I have included a link to a help article that explains the connections under the hood. The owners manual will show the the specific location of the brake controller fuse. The help article also covers the tow package wiring colors and functions on the vehicle. Make sure...
    view full answer...
  • Wiring a Brake Controller on a 2007 New Body Style Chevy Silverado
    On your New Body Style 2007 Siverado there is no port underneath the dash, so you won't need a wiring adapter like the 3035-P. There is a bundle of 5 wires taped up together with the following colors red, dark blue, light blue, white and brown. You can find the bundle underneath the dash above the brake pedal. The wiring harness also has a white tag taped to it, which should make it easier to located. We have a chart for how to match these wires up to the wires on the brake controller....
    view full answer...
  • Brake Controller Wiring Adapter Part # 3015-P for 2004 Chevy Silverado
    If you have the OEM wiring harness that came with the truck, you do not need a wiring adapter like part # 3015-P. The OEM harness DOES NOT attach to the brake controller wires color for color. It would wire as follows: the red wire on the OEM harness connects to the black wire on the controller, the light blue wire on the harness connects to the red wire on the controller, the dark blue harness wire connects to the blue wire on the controller and the black wire on the harness attaches to...
    view full answer...
  • Installing an Electric Brake Controller on a 2005 Chevy Silverado
    2005 Silverado models that came with a factory 7-Way plug, meaning 6 blades running around the edge and a round pin receptacle in the center, would not require additional connections to be made in order for the brake controller to function. If your 2005 Chevrolet Silverado did not come from the factory with a 7-Way installed, you will need to connect the 12 volt and electric brake wires under your hood. To do this, you will remove the bracket in the corner that is closest to the driver...
    view full answer...
  • Plug in Adapter for Voyager Brake Controller in 2004 Chevy Suburban with Factory Tow Package
    There is a simple plug in adapter that you can use that will fit the Voyager brake controller on one end and a port on the vehicle on the other end. It is # 3015-P. I have included a link to a video showing a typical installation on a similar vehicle. Since you have a simple plug in option, you will not have to hardwire the controller to the vehicle.
    view full answer...
  • Installing Draw-Tite Brake Controller On 2005 Chevrolet Silverado
    I recommend using part # 3015-P to easily install the brake controller. You just cut off the black connector on the adapter and wire it to the matching colors at the back of the brake controller. The other end of the harness plugs into the junction box located under the dash to the left of the brake. I have also attached some helpful articles that explain brake controller installation and troubleshooting you can check out.
    view full answer...
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