View Cart
Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Pigtail - GM

Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Pigtail - GM

Item # 3025-S

lowest price pledge

Retail:$20.77

Our Price: $10.58

You Save: 49%
Accessories and Parts

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Orders above $99 qualify for Free Shipping

Shipping Weight: 0.31 lbs

Quantity: 
In Stock, Ships Today
Accessories and Parts 3025-S - Wired to Brake Controller - Tekonsha
zoom in icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
Please enter a valid email address.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

pop out icon replay 360 icon
horizontal rotate icon

Product Images

In Use/Installed


  • Brake Controller
  • Wiring Adapter
  • Wired to Brake Controller
  • Tekonsha
  • Vehicle Specific
Streamline the installation of your trailer brake controller with this custom adapter. Simply connect the wires of the harness to your brake controller and then plug the other end into the junction box beneath your vehicle's dash. Call 800-298-8924 to order Tekonsha accessories and parts part number 3025-S or order online at etrailer.com. Free expert support on all Tekonsha products. Guaranteed Lowest Price and Fastest Shipping for Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Pigtail - GM. Accessories and Parts reviews from real customers.


  • All Info
  • Reviews (5)
  • Q & A (41)
  • Photos
  • Why etrailer?

Tekonsha Accessories and Parts - 3025-S

Streamline the installation of your trailer brake controller with this custom adapter. Simply connect the wires of the harness to your brake controller and then plug the other end into the junction box beneath your vehicle's dash.


Features:

  • Pigtail wiring adapter eases installation of your electric trailer brake controller
  • Connector end plugs into the built-in port beneath the dash of your vehicle
  • Wire end connects to the wires on your brake controller with the included butt connectors
    • Compatible with time-delayed and proportional brake controllers from TrailerMate, Draw-Tite, and Tekonsha
  • Limited 1-year warranty


Installation of Tekonsha Brake Controller Adapter

To install your electric brake controller, you need to connect the wiring of the controller to your vehicle. Certain auto manufacturers offer pre-wired options, typically known as tow packages, wherein wiring is run for you from the dash to the trailer connector on the back of your vehicle. When this is done, a port is installed at your dash so that you can easily plug in a brake controller.


Installation 1Installation 2

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 hook this adapter up to your trailer brake controller, just connect the 4 wires of the harness - ground, power, brake switch, and brake power - to the corresponding wires on the brake controller. If your brake controller came with a plug built into its wiring harness, you will have to cut off the plug and connect to the wires themselves.



3025-S Tekonsha Brake Control Pigtail Wiring Adapter - Single Plug - GM

Replaces Tow Ready 20263





This Product Fits The Following Vehicles

2002 - 2002 Chevrolet Avalanche with factory 7-Way

2002 - 2002 Cadillac Escalade with factory 7-Way

2002 - 2002 Cadillac Escalade EXT with factory 7-Way

1999 - 2002 GMC Sierra with factory 7-Way

1999 - 2002 Chevrolet Silverado with factory 7-Way

2000 - 2002 Chevrolet Suburban with factory 7-Way

2001 - 2002 Chevrolet Tahoe with factory 7-Way

2000 - 2002 GMC Yukon with factory 7-Way

2000 - 2002 GMC Yukon XL with factory 7-Way

2000 - 2000 Chevrolet Tahoe with factory 7-Way - excluding Limited or Z71

2002 - 2002 Chevrolet Avalanche without factory trailer connector

2002 - 2002 Cadillac Escalade without factory trailer connector

2002 - 2002 Cadillac Escalade EXT without factory trailer connector

1999 - 2002 GMC Sierra without factory trailer connector

1999 - 2002 Chevrolet Silverado without factory trailer connector

2000 - 2002 Chevrolet Suburban without factory trailer connector

2001 - 2002 Chevrolet Tahoe without factory trailer connector

2000 - 2002 GMC Yukon without factory trailer connector

2000 - 2002 GMC Yukon XL without factory trailer connector

2000 - 2000 Chevrolet Tahoe without factory trailer connector - excluding Limited or Z71



California residents: click here



Customer Reviews

Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Pigtail - GM - 3025-S

Average Customer Rating:  5.0 out of 5 stars   (5 Customer Reviews)

Streamline the installation of your trailer brake controller with this custom adapter. Simply connect the wires of the harness to your brake controller and then plug the other end into the junction box beneath your vehicle's dash.

- 3025-S
by:

Great product, worked perfectly 573062



- 3025-S
by:
2001 GMC Sierra

Great service, and product worked excellent ! I work order again. 514227



- 3025-S
by:
2002 Chevrolet Avalanche

What can I say...no problems....the way everything should be. 430393



- 3025-S
by:
2001 Chevrolet Silverado

Good 367758



- 3025-S
by:

Awesome service, fast delivery. I would highly recommend etrailer. ?? 243242


5
5

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


  • Hard Wiring Tekonsha Prodigy P3 Trailer Brake Controller # 90195 in 2000 Chevrolet Silverado
  • The Prodigy P3 trailer brake controller # 90195 can be installed with a custom-fit wiring adapter # 3025-P in trucks that have a factory 7-way, or it can be wired using the included harness with 4 pigtail leads and part # 3025-S along with brake controller install kit # ETBC7 if the truck does not have a factory 7-way. It sounds like you may already have one or more of these parts. Brake controller wire colors and functions are as follows: BLACK wire (12V input power) connects through...
    view full answer...

  • Wiring a Brake Controller on a 1995 Chevrolet Silverado 2500 LS
  • Yes, you will be able to install the Draw-Tite Activator IV Brake Controller, item # 5504, on your 1995 Chevrolet 2500 Silverado LS. You will not need the Universal Brake Control Wiring Adapter 1999-02 Chevrolet, GMC, Cadillac, item # 3025-S, on the 1995 model because there is no factory port under the dash to plug the adapter in to. Chevrolet did not start putting the brake controller wiring port under the dash until 1999 so you will need to hard wire the brake controller on your 1995...
    view full answer...

  • Brake Controller Installation on a 2002 GMC Sierra Pickup, Possible Wire Colors and Functions
  • You might have a port on your truck, driver side, to the left of the emergency brake pedal in a power distribution box. If so, you can just plug in wiring adapter # 3025-S and match the colors on the other end to the brake controller. To complete installation and to activate the tow package (if it has not been done already) there are some connections that need to be made under the hood. I have included an FAQ explaining the process below. Wire colors are not an exact science, even on...
    view full answer...

  • What Position Can the Prodigy P3 Brake Controller 90195 Mount In
  • As long as the P3 part # 90195 squarely faces the rear of your vehicle it can be at any angle. I attached pictures that show how it will need to be orientated. Another option you have would be the Redarc Tow Pro Elite part # 331-EBRH-ACCV2 which basically only requires you to mount a small knob on your interior that controls the controller and the brain of it mounts out of sight. I attached a picture of what the knob looks like for you to check out as well.
    view full answer...

  • How to Wire a Brake Controller on a 1999 Chevy Suburban K1500
  • Your 1999 Chevrolet Suburban will need to be hard wired for installation of a brake controller. The Suburban did not get the wiring update that the pickup did until the 2000 model year, so the Universal Brake Control Wiring Adapter, item # 3025-S, will not work on your Suburban. You will need to splice the red wire from the back of the brake controller to the wire at the back of the brake pedal switch that carries power only when the brake pedal is pressed. You will also need to wire...
    view full answer...

  • Brake Controller Wiring Adapter for a 1999 Chevy Suburban
  • I am sorry, but the Universal Brake Control Wiring Adapter 1999-02 Chevrolet, GMC, Cadillac, item # 3025-S, is only for the 2000-2002 Chevy Suburban with a New Body Style. It does not fit the 1999 Suburban. I just checked for you, and we do not have a custom brake controller adapter for the 1999 Suburban, which leads me to believe there is not a port available for the brake controller under your dash. Some models do have the brake (blue) and hot lead (orange or red) wires already ran...
    view full answer...

  • Do the Wires on the Brake Control Wiring Adapter Match Up Color for Color with the Brake Controller
  • Yes, the wires on the adapter, item # 3025-S, will match up, color for color, with the wires on your brake controller. If you have a proportional brake controller the brakes will not energize when setting still because the controller uses the forward momentum of the vehicle to energize the brakes with the appropriate amount of power to stop the trailer. The controller will need to be adjusted, after warming the brakes up a bit by starting and stopping a few times, using the directions...
    view full answer...

  • Wiring Pattern for a 7-Way RV Trailer Connector on a 2001 Chevrolet Silverado Without Factory Wiring
  • To install a 7-Way wiring connector at the rear of your 2001 Chevrolet Silverado without a factory 7-Way or a factory 4-Way connector, I recommend using the 7-Pole and 4-Pole Trailer Connector Socket and wiring harness, # HM40975-11998. You can the wire most of the circuits needed to the wiring harness that is located above the spare tire along the driver side frame rail. The wiring above the spare has a yellow wire for the left turn and brakes, dark green wire for the right turn and...
    view full answer...

  • Troubleshooting Prodigy P2 Brake Controller Installed in a 2001 Chevrolet Suburban
  • Since the brakes work when you use the manual override, the first place that I would check is the fuses on your 2011 Chevy Suburban. I recommend starting with the fuse box under the hood and make sure that the fuse labeled CHMSL is good. CHMSL stands for Center High Mount Stop Light, the light at the top of the rear hatch of your Suburban. Since it is triggered with the brake lights this might be causing the issue you have with the Prodigy P2 brake controller. The next place to check...
    view full answer...

  • Do Wires On Brake Control Wiring # 3025-S Match Up Color To Color on a 2002 Chevrolet Avalanche
  • To connect the Universal Brake Control Wiring Adapter, part # 3025-S, you would plug one end to the brake control port underneath the dash that should be located to the left of the steering column. The wire colors for this adapter will match up color for color to the wires coming out from the brake controller. The wire functions traditionally on a brake controller are as follows: Red Wire - Stop Light Switch Blue Wire - Trailer Feed, Power To Brakes Black wire - 12 volt power White...
    view full answer...

  • Troubleshooting Trailer Brakes that Engage when Trailer is Connected to a 2002 Chevy Silverado
  • It sounds as if there is constant power being supplied to the brake feed circuit on your vehicle, since the trailer is working correctly with another vehicle. Start out by using a circuit tester, item # 40376 if needed, to test the trailer connector at the rear of the vehicle. Looking at the connector with the access door up the terminal at the 5 o-clock position will be the brake feed circuit (see link). Ground the tester and touch the probe to this terminal. If there is power on this...
    view full answer...

  • Brake Controller Install Harness Recommendation for 2000 Chevy Silverado 2500
  • The harness you need is the part # 3025-S. You will wire the harness by color to your controller and then will plug the brown connector into the junction box under the dash of your truck. I attached a help article on installing controllers in your generation truck for you to check out as well.
    view full answer...

  • How to Wire the Voyager Brake Controller to the Factory Wiring Harness on a 2001 Chevrolet Truck
  • The wires on the OEM connector that was supplied with your 2001 Chevy Silverado should be marked for function, if not, I believe I can help. Your pickup will use the Universal Brake Control Wiring Adapter, item # 3025-S, and the wires for the brake controller will be in the same location on your OEM connector. With the OEM connector positioned with the locking tab up and facing away from you, the wires you need to connect to will be as follows. The blue wire should be connected to...
    view full answer...

  • How to Wire a Dexter Axle Predator Brake Controller 58-8 on a 2001 GMC Sierra
  • The light blue wire mentioned in the video of the # HM40975-11998 7 and 4-pole trailer connector being installed on a 2002 Silverado is for a camper shell brake light, and is not for use with an electric brake controller. The electric brake wire on your 2001 GMC Sierra is run from the port below the dash into the engine compartment, but it does not continue back to the rear wiring bundle. You will need to finish the connection by running a wire from the 7-Way in the rear of the truck...
    view full answer...

  • Connection of Blue Trailer Brake Control Wire on a 2001 Chevy Silverado.
  • The blue wire is the brake feed wire for the trailer brakes. When you plug in the adapter, item # 3025-S if you need one, the wire is attached to the blue wire on the adapter which is connected to the blue wire on the brake controller. From under the hood the blue wire with the connector that needs to be cut off is ran to the 6-Way or 7-Way connector at the rear of the vehicle and attached to the brake circuit in the connector. If you use the Brake Controller 7 & 4 Way Installation...
    view full answer...

  • Installation of Brake Controller on a 2000 Chevrolet Suburban 1500 Series
  • You can install any brake controller on your 2000 Suburban, with factory 7-way connector, by using the Universal Brake Control Wiring Adapter 1999-02 Chevrolet, GMC, Cadillac, item # 3025-S. I would recommend the Tekonsha Prodigy P2, item # 90885 and adapter # 3025-P, one of our best selling brake controllers. If your 7-way connector was not factory installed then you may need the Replacement Multi-Tow 7-Way and 4-Way Trailer Connectors for Ford, GM Trucks with Factory 7 Way, item...
    view full answer...

  • Troubleshooting Brake Controller on 2002 GMC Sierra 2500 HD
  • First, use a circuit tester like part # 40376 on the black wire exiting the rear of the controller to verify that power is reaching it. If not, there is a 20 or 30 amp fuse in the power distribution box, located under the hood on the drivers side fender, that is most likely blown. Once the fuse is replaced, you will want to inspect the brake output circuit on the trailer connector, tracing it back to the trailer brake magnets to determine what caused the fuse to let go. Skipping this step...
    view full answer...

  • Are the Under Hood Wires Connected for Brake Controller Installation on a 2002 GMC Sierra
  • If your 2002 GMC Sierra has the factory 7-Way tow package wiring installed on it then the under hood wiring is most likely connected to the studs that are found at the power distribution box. If your truck does not have the factory 7-Way tow package wiring, then you will need to connect the wires under the hood. We have a detailed article that shows where to connect the under hood wires, see link, and explains where to attach the brake controller output wire and 12 volt power lead for...
    view full answer...

  • What are the Wiring and Color Codes for a Bully Trailer Brake Controller
  • If you have a Bully TC-301 brake controller it should have the following wiring colors and codes: Black = ground Red = 12 volt power Blue = input from stop light switch Yellow = out to trailer brakes This is different than a connector like # 3025-S. On it the colors are black for 12 volt power, white for ground, blue for output to trailer brakes, and red for input to brake controller. But on a 1996 Chevy Suburban you will need to hardwire in the controller because there is no port...
    view full answer...

  • Do Wire Colors on Hayes Brake Controller Match Wiring Harness 20263 for 2000 Chevy Silverado
  • Yes, the colors on the harness # 3025-S and those on the brake controller, HA81745, will match up. White is ground, black is 12 volt power, red is input from the brake switch, and blue is output to the trailer brakes. To complete installation, there may be some additional connections you will need to make under the hood. I have included a link to an FAQ article explaining these under hood connections. But for a Hayes controller you will want to use the matching Hayes harness for the...
    view full answer...

  • Recommended Brake Controller For Pulling a Coachman Catalina Light Trailer with a 2002 Chevy Tahoe
  • Tekonsha Voyager brake controller # 39510 would be a good choice for your 2002 Chevrolet Tahoe. Your vehicle is wired with a plug for a brake controller, so you would also need brake control wiring adapter # 3025-S to make the installation as easy as possible. The 4 wires from the wiring adapter would simply be connected, using butt connectors, to the 4 matching wires coming out the back side of the Voyager brake controller. If your Tahoe did not come with a 7-way plug from the factory,...
    view full answer...

  • What Is Each Wire on the Universal Brake Control Wiring Adapter, item # 3025-S, Used For?
  • The # 3025-S Universal wiring adapter is not the correct adapter for the 2003 Chevy Silverado 2500 HD. The connector will fit but You will need to remove the blue locking clip and switch the red wire from the top left, looking at the connector with the locking clip in the down position, to the bottom right connector terminal (opposite corner). To get the red wire out you will need to press on a very small locking tab on the connection side of the terminal. This is the only change that will...
    view full answer...

  • Can Brake Controller Wiring Harness from a 2001 Chevy Tahoe Fit a 2006 Chevy Silverado
  • The wiring harness for the 2001 Chevy Tahoe, # 3025-S, is pinned out differently than the harness needed for the 2006 Chevy Tahoe. However, you can re-pin the 3025-S. With the blue locking tab on top, the white wire goes into the top left spot, the red goes in the bottom left spot. Black goes in center right and blue in bottom right. I have included a picture that should help.
    view full answer...


Do you have a question about this Accessories and Part?




  • Why etrailer.com?

    At etrailer.com we guarantee:

  • Highest quality accessories and parts for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate accessories and part information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Satisfaction Guarantee
    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Expert Research:
Jackie C
Edited by:
Lindsey S
Expert Research:
Michael H
Expert Research:
Jameson C
Updated by:
Laura H
Written by:
Alexander C

At etrailer.com 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.


Product Experts Available Now!

Call 800-298-8924