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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: $17.81
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Accessories and Parts 3015-P - Plugs into Brake Controller - Tekonsha
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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 vehicle'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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Tekonsha Accessories and Parts - 3015-P

  • 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 vehicle'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

This Product Fits The Following Vehicles

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   (1135 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!

2007 Chevrolet Silverado

It was exactly a plug and play option for my 2007 Silverado 2500HD Classic. The harness worked flawlessly with the brake controller and has been perfect for many trips so far.


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.



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.

2003 GMC Yukon

Made the install on a 2003 Yukon SLT very easy and quick, no wiring to mess with. Plug and play - worth the money!


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.

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.


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


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.


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.


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!!!

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


Harness worked perfect for my controller


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.

Bryant G.


Fitment good, no complaints


Easy to use

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.

2006 Chevrolet Silverado

I just recently bought a tekansha brake controller and it is awesome works beautifully with my travel trailer and my 06 Silverado...strainer has awesome selections at great prices will buy from them again


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


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


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.


Exactly what I needed.

2010 Chevrolet Silverado

Installed in a 2007 silverado with the vehicle specific harness in 10 minutes. Wish the harness was about 3" longer but it worked out.

2006 Chevrolet Silverado

Very smooth purchasing from etrailer. Very detailed product description, plenty of helpful videos and technical support. Even got emails very quickly informing me what stage my order was in. I am more than pleased and definitely will continue to buy through etrailer

Show More Reviews

See what our Experts say about this Tekonsha Accessories and Parts

  • Can Tekonsha Brake Controller Harness for 2003 Chevy Tahoe be Used on Other Brand Controllers
    You could use the brake controller part # 3015-P on basically any brake controller out there but you'd have to cut off the black end of the harness and wire by color to the new controller. Normally it directly connects to Tekonsha and Draw Tite brake controllers. Or we have this harness without the black connector with part # 3015-S.
    view full answer...
  • Universal Wiring Adapter for a Tekonsha Voyager Brake Controller Installed on a 2004 Chevy Suburban
    Part # 3015-P, comes with a plug on each end, one for the brake controller on specific Tekonsha models and one for the vehicle. Since the Tekonsha Voyager does not have the plug on the back, you can use part # 3015-S. One end has a plug for your vehicle and the other end has loose wires for you to splice into the Voyager. Please let me know if you have any questions or if there is anything else I can assist you with.
    view full answer...
  • Which Brake Controller Harness is Correct for a 2005 GMC Yukon, 3015-P or 3015-S
    Both the # 3015-P and the part # 3015-S will work just fine with your vehicle. The difference is that the # 3015-P will plug directly into the back of the P-3 controller, while the 3015-S would need to be spliced into the bare leads that exit the rear of the controller. The adapter would plug into the junction box under the dash, like you saw in the video. The controller must be mounted within driver reach, and according to the manufacturer recommendations.
    view full answer...
  • 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...
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  • 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...
  • Troubleshooting Brake Controller Install 2006 Chevy Silverado Where Stoplight Circuit Stops Working
    Check the third brake light of your 2006 Chevy Silverado. It's very common for the CHMSL fuse (third brake light) to blow on GM trucks of your generation and when that happens the brake controller stoplight circuit stops activating.
    view full answer...
  • Brake Controller Installation on a 2010 Chevrolet Silverado 1500 Crew Cab
    More often than not, the connections under the hood of your 2010 Chevrolet Silverado 1500 will need to be made to complete the installation for a brake controller. I have heard of some occasions where these connections were made at the factory, but it would be wise to double check. Once you have the brake controller wired to the brake control harness in your cab, check for the brake control wire and the battery charge wire under the hood. The brake control wire will be located to the...
    view full answer...
    Image 1 for
  • Installing Brake Controller On 2004 Chevrolet Silverado With Tow Package
    The easiest way to install the brake controller is to use the # 3015-P plug-in adapter on your 2004 Silverado. You can just plug one end in to the back of the brake controller and the other end plugs into the port inside the black box under your 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.
    view full answer...
    Image 1 for Image 2 for
  • 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...
  • 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...
  • Troubleshooting No Brake Output at 7-Way with Factory Brake Controller on 2010 Chevy Suburban
    I did take a look at the online owner's manual for your 2010 Chevy Suburban and found that there should be a fuse located in the # 6 position inside the engine compartment fuse block. This fuse is for the trailer brake controller and you can start by checking to make sure it is present and in good condition. If the fuse is good, then I recommend checking the 7-Way itself for any debris or corrosion that might be built up behind the pins, cleaning out as needed. Check the wiring going...
    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
  • Making Wiring Connections Under the Hood of 2007 GMC Yukon to Make Tow Package Functional
    The previous owner of your 2007 GMC Yukon probably did not know about the under the hood connections that needed to be made in order for the factory tow package wiring to be fully functional. You can leave it as is but for a cleaner and more professional install I recommend doing it the more correct way; that is to say using the factory wiring as it was intended. I have included a link to a help article that explains this process for you.
    view full answer...
  • 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...
  • Should Brake Controller Apply Vehicle Brake Lights When Manual Override Lever is Slid
    Actually having your brake lights illuminate when you hit the manual override of your controller is normal. The controller is backfeeding the brake line so that the brake lights of your car light up which will then light up the trailers brakes so that people behind you know that the vehicle's brakes are applying. Typically if the controller isn't recognizing a trailer it's due to corrosion on the trailer connector preventing the connection from being made. Check that and clean as necessary....
    view full answer...
  • Location Of Brake Controller Port On 2006 GMC Yukon SLT
    There will be a place to plug in the brake controller with adapter part # 3015-P on the 2006 GMC Yukon SLT located in a black junction box under the dash next the emergency brake pedal. I have attached a couple of photos of what the box should look like in the Yukon.
    view full answer...
    Image 1 for Image 2 for
  • 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 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...
  • 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...
  • 2007 Chevrolet Suburban 2500 Wire Harness Adapter
    The 2007 Suburban does not require a wiring adapter so the Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - GM # 3015-P will not be confirmed fit in our system since it's not necessary. The tow package wiring however can wire directly to the brake controller instead, located above the emergency brake pedal, it is taped to a wiring harness. There will be a white tag hanging off of the wiring and the four wires included are red, dark blue, light blue and white. You will...
    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...
  • No Left Trailer Brake Light On Chevy Silverado 1500
    The trailer taillights and vehicle taillights are on completely separate circuits so a fault in one system would not then cause a fault in the other on a 2005 Chevy Silverado 1500. If you have an issue with the left trailer brake signal then I also suspect you have an issue with the left trailer turn signal as well because these functions are both on the same circuit. I first recommend you check your fuse box for any blown fuses, the left trailer turn/stop fuse is in the center instrument...
    view full answer...
  • Troubleshooting Installation Of Brake Controller For 2005 Chevrolet Tahoe
    I called my contact at Tekonsha about the brake controller issue you said you are having. First, unplug the # 3015-P from your Tahoe and look at the plug wiring. The upper left hand wire should be Blue, middle left hand wire should be Black, upper right hand wire should be Red and the lower right hand wire should be White. If those check out unplug the connector at the back of the brake controller. The plug will be labeled ABCD. The wire for D should be Blue, C is White, B is Red, and...
    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...

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