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. Call 800-298-8924 to order Tekonsha Accessories and Parts part number 3015-P or order online at Free expert support on all Tekonsha products. Guaranteed Lowest Price and Fastest Shipping for Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - GM. Accessories and Parts reviews from real customers.

Shop by Vehicle

Accessories and Parts > Brake Controller > Accessories > Brake Controller Wiring > Plugs into Brake Controller > Wiring > Tekonsha

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

Tekonsha Accessories and Parts

(259 reviews)

Code:   3015-P


Shipping Special

Shipping Weight: 0.22 pounds


Tekonsha Accessories and Parts - 3015-P

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) 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

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

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

Video Demo Tekonsha Accessories and Parts 3015 P
Tekonsha Accessories and Parts 3015-P Review
Video Brake Controller Install 2006 Chevrolet 3500
Trailer Brake Controller with Wiring Installation - 2006 Chevrolet Silverado 3500
Video Brake Controller 2005 Chevrolet HD2500
Trailer Brake Controller Installation - 2005 Chevrolet Silverado HD 2500
Video install brake controller 2004 chevrolet silverado 90885
Trailer Brake Controller Installation - 2004 Chevrolet Silverado
Video install brake controller 2004 chevrolet silverado 90195
Trailer Brake Controller Installation - 2004 Chevrolet Silverado
Video install tekonsha prodigy p2 brake controller 2003 chevrolet silverado 90885
Trailer Brake Controller Installation - 2003 Chevrolet Silverado
Video brake controller install 2004 chevy suburban
Trailer Brake Controller Installation - 2004 Chevrolet Suburban
Video install brake controller 2005 gmc sierra 90885
Trailer Brake Controller Installation - 2005 GMC Sierra
Video install tekonsha brake controller 2003 gmc sierra 90885
Trailer Brake Controller Installation - 2003 GMC Sierra

Video Transcript for Tekonsha Accessories and Parts 3015-P Review

Today were looking at part number 3015-P. This is the Tekonsha Plug In Wiring Adapter for Electric Brake Controllers. This is a fast and easy way to provide power to your electric brake controller. It works for GM Trucks and SUVs in model years 2003 to 2006. It also fits model year 2007 classic body style trucks. This is the easiest thing in the world.

It is compatible with both time delayed brake controllers and proportional brake controllers and it fits most Draw-Tite and Tekonsha products. Simply plug the black end into the back of your brake controller and then plug the tan end into the port, the brake controller port that is underneath your dash and thats it. This is about 30 inches long. It comes with a one year warranty. There you have it for part number 3015-P the Tekonsha Plug In Wiring Adapter for Electric Brake Controllers..

Customer Reviews

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

Average Customer Rating:  4.9 out of 5 stars   (259 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.

- 3015-P

by: Len C.07/15/2013

I've used a time delayed controllers for 15 years to brake my popup camper, where I became accoustomed to the initial "tug" from the trailer whenever I depressed my brake pedal. The Tekonsha P2 was my entry into proportional controllers when I traded up for a 25' Airstream. The installation was simple on my GM which allowed me to essentially plug and play. The P2 display seems a little "dated", with it's LCD type fonts, but once you get used to the code, it's really not a problem. I didn't know where I might be installing the controller, so having a unit that allowed 360 degreed of rotation gave me the options to install it almost anywhere on the dash, including my near vertical lower dash. That was a big plus. The biggest change for me was in the ride. On my maiden trip (around the block), I was sure that the unit was defective. Although the manual braking lever resulted in a definate stopping of the trailer, when I depressed my car brakes, there was no "tug", no lurching, no lock-up no apparent anything...BUT that was just the point. This controller applied just the right amount of braking on the trailer that was necessary. It was near impossible to tell that that you were stopping an additional 5000 lbs. I especially like it's "boost" option which applies additional inital braking power to trailer if you choose. Although my experience is a total of 2 miles with this product (soon to be 4000 mi), I'm quite impressed with it's abilty to do it's job. If I don't update my review in 2 months, it's becasue I have no complaints with it. 89541

- 3015-P

by: Frank K05/31/2013

I ordered a Tekonsha 90195 P3 Brake Controler and the GM 3015-P Plug- in wiring adapter. I'm replacing an older Tekonsha Voyager unit on my 2004 Chevy 1500 pickup. New items installed easily in less less than an hour, as described on your web site.Have not road tested the unit yet but expect this controler will prove to be a good one. I placed my order on-line on Monday (also a Holiday) and recieved the items two days later on Wednesday. Recieved several e-mails from Etrailer keeping me updated on the order. Great service. Have already recommended Etrailer to others. 82687


Every thing is work very well. The brake control I bought has turned out to be a big improvement over the older controller I was using with my 30 travel trailer.

Frank K - 06/01/2014


- 3015-P

by: hardin, frank04/29/2013

Got the brakes, drums, breakaway, controller and harness installed this weekend everything works great 78261


Ive had the products for about a year now and everything still works great. Now Ive update my vehicle to something new and transfered the brake controller to my newer vehicle. I did watch a Utube video for etrailer on the newer vehicle because it was not a plug and play, so I used my old harness and it works great.Thanks for checking back with me and if I ever need anything you will get my business.

Frank H - 04/29/2014


- 3015-P

by: Vincent A. Teti10/31/2012

This was my first time towing such a large RV trailer[22 feet] and with my 2003 Hummer H2 it worked like a dream. Great brake system, made my life on the road so nice.I would not hesitate recommending this product to anyone...Thank you for your prompt and courteous service.etrailer ROCKS!!! VAT cheers 58534


Still working great.Great product..Thank you again..Cheers!!!Anthony Teti

Vincent A - 05/01/2014


- 3015-P

by: PJR08/01/2014

Application: 2004 Chevy Tahoe LT / Pulling RV Camper My first ever review of anything purchased online and I figured this one really had merit to deserve the extra attention in giving credit where it's due.. Easy and efficient online ordering processes, excellent customer service and the follow-up email after the sale and delivery of the product was the icing on the cake! You guys' have really got it together over there and I'll be ordering from you again very soon! Thoroughly impressed with the fantastic O.E.M. quality connectors and wiring harness of this product! Perfect length, perfect fit and installed just as quick and easy as the product's description and related installation videos have shown. Thanks again for the outstanding customer service and superb product quality! "I'll Be Back!" 144028

- 3015-P

by: Mike Motz07/22/2012

It was easy to install. Just plug in under the dash with the prewired wiring harness. I first installed the permanent mounting bracket. I was unfamiliar with its use and hard to see it when it is mounted down below the steering wheel. Installed the removable mount, it allow you to bring the unit up to where you can see it. The boost is help full for pulling at rated load behind a 1500 Chevy Silverado. I was moving a tractor on a trailer and the road out was a downhill gravel road. The plug is powered at all times. I would have thought it would shut off when the ignition was off. If your truck sits a lot and just used for the weekends, you may drain the battery. Not sure of the load, it may not matter, except the display does stay lit up. 48918

- 3015-P

by: Matt B.07/30/2014

I purchased the Prodigy P2 and the corresponding wiring adapter item number 3015-P. Installation was very straight forward and simple. Only issue was after everything was installed correctly and triple checked. The brake controller would not connect to the trailer and was throwing a "NC" error code. Trailer lights worked, proving connectivity between factory plug and trailer and also a good ground. After troubleshooting for over an hour, re-seating connections, and everything else I could think of, I left everything alone for the evening. Next day, turn the ignition switch on and the controller was working perfect...and has for over a week. No idea what the issue was/is but it hasn't arose since. 143433

- 3015-P

by: Tony F.10/09/2014

I purchased a newer truck and wanted to transfer the trailer brake controller from my old truck to this one. I installed the controller and connected; lights came on but brake would not engage. E-Trailer has always been my goto for trailer parts so I gave them a call. Mark M helped figure out I needed a different harness between the controller and the truck connection panel. I placed the order thru him and recieved it on time as usual. The part was a perfect fit for my application and it took all of 10 seconds to install; it plugged right up to existing connections. I have always recieved world class customer from E-Trailer and this occasion was no different. Great place to shop! 155323

- 3015-P

by: Joe U.07/31/2013

Easy installation on 03 avalanche. 92520


Works fine.

Joe U - 01/29/2015


- 3015-P

by: Robert03/24/2013

I purchased the item 3015-P along with the Tekonsha Prodigy P-3 trailer brake controller. The instructions were excellent as well as the etrailer online video instructions, which made the installation a breeze. I did call about a question I had about the Prodigy P-3 and my call was answered in a very helpful and very friendly mannor. Shipping was remarkably fast as is etrailer's service. And their prices are great too. I really enjoyed doing business with these folks and I will be a repeat customer. Robert M. Littleton, Colorado 72141

- 3015-P

by: Kurt09/18/2014

Excellent product! Plugs right into truck and is well assembled. My brake controller was a different brand, so I cut the Tekonsha plug off the end of this adapter and wired it straight to my controller leads. Using the wire sheath that came with it, I covered up my splice, tucked it under the dash, and it looks like a factory installation. I've wired a lot of brake controllers from the battery, through the cab, and out the back. This type of adapter is definitely the better way to go if you have the option. 151838

- 3015-P

by: Michael E.08/23/2014

Well, I haven't used the product much yet other than to take the camper out for a test drive and set the brake control. All seems well thus far. I wil say though I am very pleased with etrailor's customer service. Very good service and prompt delivery - unlike the other place I purchased my brake assemblies from. Had I known etrailor has brake assemblies prior to purchasing from that other place, I would have purchased here instead. Wish I had. I know now and will definitely recommend to others. 148187

- 3015-P

by: David M.01/21/2014

The Prodigy 2 controller is just what I expected. Installation was a quick and easy. Plug and play doesn't get much easier. I used the metal bracket on my installation due to the fact that it allowed me to use the holes previously used for the old controller. I hope to be back on the road using it for my 26' low boy equipment trailer and 38 ' fifth wheel travel trailer soon. I would give it an excellent rating but I haven't gotten to use it yet. 114335

- 3015-P

by: Tommy03/07/2013

i didnt take any pictures of the installing but didnt expect it to be as simple as it was it was quick and easy just plug it into the femal plug under the dash then into the p3 set it up and ready to go withen about 45 minutes i pul a 20 foot camping trailor with a 97 silverado classic trailor weight 8589 pounds and this p3 dois a great job going down montegle mountain and it is a steep mountain. sign tommy 69464

- 3015-P

by: Travis03/10/2013

The install was quick and easy with this cable. The cable was too short for me to reach the desired location of the controller, though, so I simply cut it and spliced on the connector pigtail that was included with the controller. I used a similar kit when I installed a brake controller on my Ford and it was long enough. On this Chevy it could have been a foot or two longer for the most flexibility. 69888

- 3015-P

by: Juan02/18/2015

Got it on time as Karen had promised yesterday when I ordered it, installed it in less than a few minutes and works great, Karen was courteous and very knowledgeable about the product and to complete the great experience she followed up on the delivery and sent me here for more info on what I bought. Karen you should get a raise. What a great customer service. Thank you 175208

- 3015-P

by: Prodigy P2 brake control02/19/2014

I ordered this product on a Saturday and received it on a Tuesday. Monday was a holiday,so really surprised to get it so fast,since I had only paid for the standard shipping.The web site is really good, especially with the video that showed me how easy it is to install. I have installed it,but I have not had much time to use it yet,but I am sure it will be good. 116917

- 3015-P

by: George M.09/13/2013

Ordered a Tekonsha to General Motors Wiring Adaptor and from the beginning of the product search on the etrailer website to receiving the part, this was an excellent experience. The website is very easy to navigate and the technical advice outstanding. The price was also great and I received the part in just a few days. Great place to shop for trailer stuff. 99874

- 3015-P

by: Rick01/31/2011

The 3015-P is a simple plug and play wiring completely eliminated the need for cutting and soldering or crimping wires...I was able to install the brake controller in less than 15 minutes. I recommend the purchase of a wiring harness with any brake controller. The 3015-P is a quality product and well worth the money. Thanks Rick 6459

- 3015-P

by: Reed A.05/21/2012

Wiring harness and brake controller are working great and install was a breeze. The only thing that would have helped would be to include a install diagram for the wiring harness as to the location of plug in on my 04 Chevy Tahoe. I had to look it up on you tube. Overall fast shipping, great tracking of shipping, and great product! Thanks. 41184

- 3015-P

by: JJones03/27/2014

The plug-in GM wiring adapter worked great on my 2005 Chevy Suburban Z71. Although my truck came with a brake controller wiring adapter, the idea of plug and play without additional work was a good idea. The unit supplied was the perfect length and has a mesh braid encompassing the wires. It was well worth the little extra cost. 122485

- 3015-P

by: John S.07/21/2011

Plugged right in to the socket and into the controller. Unfortunately the socket is in a very inconvenient location for a large person to get to. If the instructions suggested using a mirror and light it would have gone faster. The tow vehicle socket is located where you can see it or reach it, but not both at the same time 19818

- 3015-P

by: Doug D.08/29/2013

My product arrived as scheduled and I was notified throughout the process of what was going on. The only thing that could have made the buying experience more enjoyable was if my items were free. I will definitely go to etrailer in the future for all my trailering needs. No more ebay for trailer stuff. 97545

- 3015-P

by: Marcus L.01/25/2012

I was amazed at how easy the wiring harness and controller installed on my 2007 Chevrolet Silverado LT. I just had to remove the cover to the left of the brake pedal and plug it in, then to the controller. I tied up the wiring harness and I was done. Now waiting to adjust my controller to my vehicle. 30319

- 3015-P

by: jeff s01/16/2014

Wow this worked great. Got . The 3015 p w out ring harness and the Tekonsha p3 controller in the mail ran out to my 03 escalade and as easy as plugging in a lamp everything worked great. I cannot sat enough about trailers service. I ordered on a Sunday night and it was at my door on weds. 113936

- 3015-P

by: Craig03/30/2013

The Brake controller was easy to install and worked great. It made a big difference in slowing down my 7800 lbs. trail trailer. Thank you for such a quick dilivery and updates on tracking my items. I will do business with you all again and will recommend you to my friends. Thank you, Craig. 73422

- 3015-P

by: Tommy D.08/13/2014

Great products, I bought a Hitch, very easy to install myself. forget about wiring, called back, talked to very knowledgeable person. very good video. no problems, Im a customer for life. Thanks , Tommy Dillard Five Star Automotive Athens, Ga. 146628

- 3015-P

by: Steve T.09/07/2013

Easy to install, bought the direct plug in cable, couldn't get any easier than this! 98778

- 3015-P

by: Erik02/07/2013

Very fast delivery. I ordered it Sunday morning and I received it Wed. Great technical help from Mark on the phone prior to ordering. Should be an easy installation with the helpful videos and instructions. As in the past, I am very satisfied with their products and services. 65290

- 3015-P

by: Ken E.02/06/2015

This harness fit great. Made the installation quick and easy. I mounted the brake controller mounted under the dash right below the radio. The harness was just the right length to get to this point. The assistance from Wayne was great. The instruction from etrailer worked perfectly. 172740

- 3015-P

by: Robert Young03/08/2012

Product is excellent and exactly what was expected. I wasn't too sure what harness was needed to fit my truck, and a quick phone call to an actual person (thank you Rose G.) got me just what I needed. Products and prices are great, service and shipment, even better.. Thanks again. 33256

- 3015-P

by: Frank S.02/19/2015

I recieved my order promptly and as promised. However I have not had the opportunity to install the brake controller as of yet. Based on the very detailed instructions it should be fairly easy to install and set up. I am very impressed by the service I received from etrailer 175295

- 3015-P

by: Harold L.05/22/2014

Customer service rep/salesman Tommy was very helpful when I ordered a wire harness for my trailer brake controller. The item was mailed to me in a very timely manner and was packaged very well .I would recommend for there excellent service and very good products. 131929

- 3015-P

by: scott07/09/2011

This was a simple plug and play so I didn't have to splice wires and figure out if red goes to yellow etc.. Made life much simpler and would buy another if i needed it. Mounting bracket was simple to install so now I can swap my brake controller between 2 vehicles with ease. 18992

- 3015-P

by: Andy11/25/2014

Great job helping me pinpoint which part I need. Quick shipping reasonable, reasonable prices and great tech videos to assist with install. Installed all products easily and had the trailer up and running same day. Looking forward to my first "TOW" this weekend!! 162440

- 3015-P

by: Roman02/12/2013

Item as described .install was very easy (plug and play )took about 15 min .shipping was super fast .my shipment was upgraded for express shipping FREE OF CHARGE .very nice people to work with .I haven't hooked it to trailer yet to see how it works but ill update my review 65889

- 3015-P

by: Max H.05/11/2011

Excellent quality and ease of installation! The wire plugged into the GMC's fuse block and controller and worked the first time. Easiest installation I have ever undertaken... and the local trailer store wanted $120 just to do the install with me providing the parts. 13437

- 3015-P

by: Ricky S03/02/2014

Ricky was very helpful. Understood my previous order vs. what I wanted to replace my new order with. It was shipped on time and the order was accurate. Ricky was very pleasant, professionally and knowledgeable. Excellent customer experience. Jim Glockner 118171

- 3015-P

by: Derek03/12/2013

The harness was plug and play. It could not have been any simpler. The etrailer staff provided me with the correct information and emailed me the link to purchase it and answered all my questions. Also super fast shipping and great customer device as always. 70120

- 3015-P

by: Jeff B05/14/2012

This wiring adapter is well built,it has good connections on the wiring and good connectors on the ends.The length gives you room to move it where you want it without having to wrap it up to get rid of alot of excess wiring.I wouldn't change anything about it. 40470

- 3015-P

by: fred s.07/04/2013

I purchased the prodigy 3 and harness. Awesome customer support and fast shipping, etrailer is a great company to do business with. Oh and the prodigy p3 is the best controller out there works flawlessly. Installation and setup was a breeze. Thx etrailer!!! 87706

- 3015-P

by: Tom03/19/2014

plug & play 5 min to install. Great service and on time. 121325

- 3015-P

by: Jim W.09/05/2013

This wiring adapter made a difficult job of splicing wires and running wires from one end of my GM truck to the other very simple. Instead you just plug one into your underdash fuse panel and the other end into the Tekonsha brake controller. Job done. 98420

- 3015-P

by: Bradley G.04/22/2014

This is a time and life saver for those of us who hate wiring. If you have a vehicle that comes with a tow package this just clips in and away you go. They also have a very easy to follow wiring diagram if you do not have a tow package vehicle, nice. 126418

- 3015-P

by: Shaun O07/11/2014

Very easy to install in my 05 Chevy Silverado, 5 minutes! I have the tow package which made using the wiring harness extremely simple. Product arrived as described and all videos and install directions were spot on! Thank you! 140871

- 3015-P

by: James09/13/2009

easy to install & works great! I had misplaced the wiring harness that came with my 2007 Silverado Classic pickup and so I purchased this unit when I got ready to install a brake controller. It was very easy to install and works perfectly. 2382

- 3015-P

by: Jenny10/19/2013

Got my controller put in today, fits perfect in my 2006 Silvarado, very happy with the way Etrailer is so concerned about making their customers happy!!!! I will always order any of my trailering needs from these guys!!!! 104361

- 3015-P

by: Bart weekes01/12/2011

Spend the extra money No hard wireing. Just find the plug in the truck and plug in it. Took two minutes to install the controller with this wire. Awsome. Saved time and head aches. Would do it again with out a doubt. 5377

- 3015-P

by: DLR10/23/2012

It took me about 5 minutes to plug in, drill holes and attach. Very easy with the adapter for tow package vehicles. Light came on for the controller as stated in instructions. For a women, I love the easy install!!! 57971

- 3015-P

by: Delbert D.12/07/2013

I have not installed this cable and Tekonsha Prodigy P2 yet due to the very bad weather lately, but with the very good installation instructions it should be simple and straight forward. The cable is of top quality. 109504

Show More Reviews

Ask the Experts about this Tekonsha Accessories and Parts
Do you have a question about this Accessories and Parts?

  • Installing a Brake Controller on a 2006 Chevy Silverado 1500 with Tow Package, Is it Pre Wired
  • As long as your 2006 Chevrolet Silverado 1500, has the factory 7-Way tow package wiring at the rear of the vehicle all you will need is the Draw-Tite Brake Controller with Wiring for the 2006 Chevrolet Silverado, item # 5100-3015-P, which includes the # 5100 brake controller and the # 3015-P wiring harness needed to install the brake controller on your truck. The # 3015-P adapter will plug into a port in the power distribution box under the dash on your truck. If you do not have a factory...
    view full answer...

  • Is an Electric-Over-Hydraulic Actuator Adapter Needed for a 2005 Chevrolet Silverado Duramax
  • I believe you are looking for an electronic brake controller to tow a trailer with electric-over-hydraulic brakes with your 2005 Chevy Silverado. If this is the case, then I recommend taking a look at the Tekonsha Prodigy P3, # 90195. The Prodigy brake controllers have been around for a long time due to their reliability and effectiveness. The P3 is the newest model that comes with many features like memory settings, diagnostic alerts, customizable display and many more. I have attached...
    view full answer...

  • Fuse Location to Power an Electric Trailer Brake Controller on a 2005 Chevy Silverado
  • The Tekonsha Voyager Brake Controller with GM Wiring Harness, # 39510 and # 3015-P, itself does not have a fuse. Since it is connected to the truck via the factory port under the dash, the fuse for the brake controller 12 volt power is located in the power distribution box under the hood. We actually have an FAQ article that explains the installation of a brake controller Chevy and GMC trucks that includes your 2005 Silverado. It covers the connections that need to be made under the hood...
    view full answer...

  • Trailer Brake Controller Wiring Harness for a 2014 Chevy Silverado 1500
  • If you are looking for a brake controller wiring harness like # 3015-P you selected then you will need # 3016 for your 2014 Chevy Silverado 1500. I have included a link to the installation instructions for you to view. If you do not already have a compatible brake controller I recommend the Tekonsha P2, # 90885. This is one of our most popular controllers because it is easy to set up, easy to use, and its reliable. If you are talking about a trailer wiring harness the only options...
    view full answer...

  • Location of Electric Trailer Brake Controller Wiring Harness on a 2010 Chevy Suburban
  • Mid-way through the 2007 model year, GM quit using brake controller ports. They now use a loose bundle of 4 or 5 wires underneath the dash; red, dark blue, light blue, white, and sometimes orange/brown. I have included links to a help page and a video of a brake controller install on a 2008 GMC Sierra. It should be pretty similar to your 2010 Suburban. The wire bundle usually has a white tag on it. If you have a Tekonsha brake controller with the quick connector, you would just use part...
    view full answer...

  • How To Install a Brake Controller in a 2011 Chevrolet Silverado
  • In 2007, Chevrolet stopped offering plug-in connectors for brake controllers on their full size trucks with tow packages. Instead, you will have four or five blunt-cut wires bundled underneath your dash. The wire colors should be red with a black tracer, white, light blue with a white tracer, dark blue. You may also have an orange wire for a center high mount stop lamp function, but this would not be used for a brake controller installation. I would recommend the Prodigy P2 brake controller,...
    view full answer...

  • Trailer Brake Controller Recommendation for a 2003 GMC Yukon XL and 2012 Crossroads Sunset Trailer
  • For your 2003 GMC Yukon XL, I recommend the Tekonsha P2, # 90885. It is one of our most popular controllers because it is easy to set up and use and it offers diagnostics. The P3, # 90195, is a great controller but is geared more towards individual with brake controller experience. It has a lot of diagnostics and features, though and would work well. Both controllers are compatible with electric trailer brake systems as well as electric over hydraulic systems. For your Yukon XL, you...
    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...
    view full answer...

  • Location of Brake Controller Port on a 2003 Chevrolet Silverado 2500 HD
  • If your 2003 Chevrolet Silverado 2500 HD has the factory installed hitch and a 7-Way connector, then all of the wires for the brake controller have been run. The factory brake controller port is located in the black box underneath the dash on the drivers side, to the left of the brake pedal. Usually a brake control adapter will be included in the junction box. If an adapter is not in the junction box you can use the Draw-Tite Universal Brake Control Wiring Adapter, part # 20264, for...
    view full answer...

  • Weight Distribution for 5000 lb Travel Trailer Towed by 2004 GMC Sierra
  • When choosing a weight distribution system, ideally the tongue weight of the trailer will fall right in the middle of the effective range of the system. Make sure that the tongue weight figure you use includes the fully loaded and ready to tow tongue weight of the trailer. The weight of anything stowed behind the rear axle of the tow vehicle also needs to be included in the tongue weight figure. If the 405 lb TW figure you mentioned represents the dry tongue weight that does not include...
    view full answer...

  • Where is the Brake Controller Port Located on a 2005 GMC Yukon Denali
  • The brake controller port on your 2005 GMC Yukon Denali will be located in the black junction box, which is under the dashboard and to the left of your steering column, right above the carpet. The plug in point will be the second port from the left, on the top row. I have included a link to instructions for a brake control wiring adapter # 3015-P that plugs in at this same point, if needed. If you do not already have a brake controller, I would recommend the Prodigy # 90185,...
    view full answer...

  • Electric Trailer Brake Controller Recommendation for 2007 Chevrolet Silverado 2500
  • The Tekonsha Prodigy P2, part # 90885, would be an excellent choice for your 2007 Silverado. Chevy produced two body styles that model year, the classic and the new body style. If you have the classic model, you would need to use a wiring adapter, part # 3015-P. The adapter would wire directly to your controller, and then plug into the port located under the dash behind the emergency brake pedal. If your Silverado is the New Body Style, the controller would directly wire into the...
    view full answer...

  • Brake Control Wiring on a 2004 Chevrolet Silverado
  • To install a controller on your Silverado, you will need to choose a controller and the appropriate brake controller wiring adapter. I recommend the Tekonsha Prodigy P2 # 90885 and Wiring Adapter, # 3015-P. The P2 is a great unit for the price, and is very easy to install and set up. One end of the adapter harness plugs into the rear of the controller, the other end will plug into the connector located in the junction box behind the emergency brake pedal in your Silverado. I will link you...
    view full answer...

  • Electric Trailer Brake Controller Recommendation for a 2010 Chevy Silverado
  • The 2010 Chevy Silverado has tow package wiring already routed under the dash, but no port to plug into so you will need to hardwire the brake controller to the factory wiring. The wiring harness on the truck is located below the steering column and to the left of the brake pedal. The bundle of wires will be held together with a white tag that lists the function of each wire. The brake controller only uses 4 of these wires as indicated below. Any additional wires will not be needed and...
    view full answer...

  • Brake Controller Wiring for a 2006 Chevy Silverado Pickup
  • If your 2006 Chevrolet has the factory installed 7-way you will need an adapter to install the brake controller. The Tekonsha Voyager brake controller has the wires hard wired into the unit so the Tekonsha Wire Replacement for GM Vehicles, 2003 - 2006, part number 3015-p, would not be the easiest way to install the Voyager. An easier route would be to purchase the Universal Brake Control Wiring Adapter 2003 - 06 Chevrolet, GMC, Cadillac, part number 20264, and then wire it to the Voyager...
    view full answer...

  • Brake Controller Power Wire Not Receiving Power On 2010 GMC Sierra With All Fuses and Connections
  • It sounds like you still need to make a few connections under the hood of your 2010 GMC Sierra. You will need to locate 2 wires, both wires are red/black with eyelets on the end. One wire is located between the fuse box and driver side fender, the other should be located under the brake master cylinder. On the driver side, remove the fuse box cover, there will be 2 threaded studs that are different sizes, the wires which have different sized eyelets will connect to the corresponding studs...
    view full answer...

  • Voyager Brake Control Wiring Diagram for Installation in a 2005 Chevrolet 1500 Silverado
  • The connections you will need to make to install your Voyager brake controller are listed below. If your Voyager has a connector attached to the wires at the back you can use the Pigtail Wiring Harness, # 7894, to connect to the wires on the connector supplied by GM that is similar to the # 20264 connector we carry. If you wanted a complete harness without splicing you could use the plug-in wiring adapter, # 3015-P. I have added a photo of the connector for the 2005 Chevrolet Silverado...
    view full answer...

  • Brake Controller and Wiring Installation Instructions for a 2007 Toyota FJ Cruiser
  • Installation of a brake controller on your 2007 FJ Cruiser will require hard wiring with a Brake Controller 7 & 4 Way Installation Kit, item # ETBC7. We have detailed instructions, see link, and a video installation, see links, of this kit and a brake controller being installed on a 2008 FJ Cruiser for you to review. If your FJ does not have a 4-Way trailer connector installed you will also need to install a T-One Vehicle Wiring Harness with 4 Pole Trailer Connector, item # 118405, prior...
    view full answer...

  • Is a Brake Controller Needed on a 2010 GMC Yukon Denali Towing a 6,000 Pound Camper
  • Some trucks now come equipped with factory brake controllers. Ford has been doing it since 2005 and GM started in 2006 or 2007. Your Yukon Denali may have come with an integrated brake controller. I would check with GMC to see if your Denali was built with an integrated brake controller. You should be able to call in with the VIN. If your Denali does not have an integrated brake controller, I would certainly add one if the camper is equipped with brakes. It will save wear and tear on...
    view full answer...

  • Installing an Electric Trailer Brake Controller on a 2010 Chevy Traverse with Tow Package
  • The connector you need for a 2010 Chevy Traverse with Towing package is part # 3026-P. I have added a link to it below. I am looking at the instructions and it appears you will need a small flat head screw driver to gently pry the plastic push-rivets out to release the panel. I have added a link to the instructions below so you can see where the connector is located.
    view full answer...

  • Brake Controller Harness for a 2003 Chevy Silverado
  • It sounds as if you might have the wrong wiring adapter. The wiring adapter for the 2002 and 2003 Silverado will fit either vehicle, but the order in which the pins are wired is different. Therefore if you have the incorrect one, it will still plug in, but will not work correctly. For the 2003, you would need part # 3015-P, not the 3025-P which is for the 2002. This can easily be verified by using a circuit tester like part # 3808 on the red wire exiting the rear of the controller. If...
    view full answer...

  • Trailer Brake Controller Recommendation for a 2005 GMC Sierra 2500HD
  • When choosing between a time delay and proportional brake controller I will always go with proportional. The reason is that a proportional brake controller will actuate the trailer brakes in proportion to how much the vehicle is braking. This is the safest braking situation. It will also reduce wear and tear on the vehicle and trailer brakes. I have included a link to our brake controller FAQ article for you to view. For your 2005 GMC Sierra, I recommend the Tekonsha P2 # 90885 and...
    view full answer...

  • Trailer Brake Controller Recommendation and Install Method for a 2008 GMC c5500 Topkick
  • From what I was able to find, the 2008 GMC Topkick 5500 does not have a port to plug in a brake controller wiring harness. A brake controller will have to be hardwired into the vehicle using a 4 and 7 Way Installation Kit, # ETBC7. Usually, this would require the installation of a 4-Way wiring harness first that would then plug into the back of the ETBC7. However, there is not a 4-Way harness available for the Topkick, so you will need to clip off the 4-Way plug on the ETBC7 and hardwire...
    view full answer...

  • What Do the PL and SH Error codes on the Tekonsha P2 Trailer Brake Controller Mean
  • The PL error code on the Tekonsha P2, # 90885, indicates that there was a power interruption when stepping on the brakes. The SH error code indicates that there is a short circuit at idle. Both of these problems could be caused by a bad ground connection. If you have hardwired the controller to the vehicle, make sure that the ground is connected to the negative battery terminal. The white wire is the ground. Black is for 12 volt power. You will need to test the wiring with a circuit...
    view full answer...

  • Which Brake Controller and Parts are Need for a 2006 GMC Yukon Denali XL
  • Since your Yukon is already wired with a 7-Way from the factory, all you will need is the brake controller and harness. Brake controllers are universal so any brake controller will work, so long as you have the right harness. The Prodigy P2 # 90885 has replaced the Prodigy # 90185, and is our best selling brake controller. The correct wiring adapter for your Yukon is # 3015-P. I have linked to a video of the Prodigy and # 3015-P harness being installed on a 2004 Chevy Suburban. Different...
    view full answer...

  • Brake Controller Recommendation for a 2005 Chevy Silverado 1500 with Factory Tow Package
  • If the trailer you plan to tow has electric brakes and you want them to work, you will need a brake controller for your 2005 Chevy Silverado. The wiring harness you found is possibly for a brake controller. If it is, it will plug into a port underneath the dash. To the left of the brake pedal in the corner under the dash is an electrical junction box with a black cover. Remove the cover. There should be an empty port on the top row, second from the left. Check the harness you found to...
    view full answer...

  • Brake Controller Wiring Harness for 2008 Chevrolet Silverado Pickup
  • On your 2008 Silverado there is not a wire connector to plug in a brake controller wiring harness but there is a bundle of wires under the dash with a white tag on it to help you identify the wires for the brake controller. This bundle will contain a thick blue wire also. Once you have the wire bundle located you will have to hard wire the brake controller to these wires. The thick blue wire on the truck goes to the blue wire on the brake controller, the light blue wire with the white stripe...
    view full answer...

  • Finding the Stop Light Switch Wire for Installing a Brake Controller on a 1995 Chevy C/K Pickup
  • You will need to use a circuit tester, like part # 3808, to test the wires under your dash. That is where your stoplight switch is located. We have a video of a 1993 Chevy Suburban being fitted with a brake controller. Start at the 7:20 time mark on the video and you can see where our installer locates the wire. You should find the wire in a similar location, but use a circuit tester to verify.
    view full answer...

  • Troubleshooting Turn Signals, Brake Lights Not Working with Running Lights On on a 2006 Silverado
  • It sounds as if you have a classic ground issue. When the vehicle running lights are on, and the brakes and or turn signals are activated, the amperage draw is the greatest and the faulty ground shows up. I would start with checking all of the ground connections on the trailer. Check the ground connection at the coupler and make sure it is attached to a rust, corrosion and paint free part of the trailer frame. Next, check all of the trailer lights. Most trailer lights are grounded through...
    view full answer...

  • Brake Controller Wiring Adapter for 2003 GMC Sierra
  • To install the Tekonsha Prodigy P2 Brake Controller # 90885 in your 2003 GMC Sierra 2500 series, you would use the Wiring Adapter, part # 3015-P. This adapter features a connector on each end, one side plugs in under the dash, the other end would plug into your Prodigy P2 brake controller, with no cutting or splicing required. The adapter would plug into the wiring block located behind the emergency brake pedal. The black cover on the junction box would be removed, and the adapter plugged...
    view full answer...

Info for this part was:

Photos by:
Theodore B

Photos by:
Jackie C

Expert Research:
Michael L

Video Edited:
Zack K

Expert Research:
Sarah L

Written by:
Lindsey S

Expert Research:
Robert G

Expert Research:
Patrick B

Expert Research:
Michael H

Expert Research:
Jeff D

Expert Research:
Reno H

Expert Research:
Jameson C

Video Edited:
Joshua S

Test Fit:
Nicholas E

Expert Research:
John H

Video Edited:
Andrew L

Expert Research:
Adam R

Expert Research:
Jeffrey L

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.

Stay Connected

Subscribe to email newsletter


privacy - we don't send unsolicited email reviews

All images, layout and content copyright