Ask a Question About This Product
Our in-house experts typically reply within one business day.
Our in-house experts typically reply within one business day.
Tekonsha
Verify Fitment
Select your vehicle to confirm this part fits.
2010 - 2017 Chevrolet Equinox
Confirmed to Fit
2010 - 2017 GMC Terrain
Confirmed to Fit

Always the correct part
We know our products
Quality Products
Free Shipping!

Always the correct part
We know our products
Quality Products
Free Shipping!
Tekonsha Tow Harnesses are the replacement for your factory electrical connector to the back of your vehicle. These harnesses are used to link the wiring from your vehicle to the trailer when towing. Tekonsha Tow Harnesses feature custom designs to fit each vehicle make and model based on manufacturer specifications. Plus, the Plug & Play connectors on the end of the wires make it easy to install. No cutting or splicing!
Tekonsha offers the largest, most complete line of Replacement Tow Harnesses. Hit the road with the peace of mind only Tekonsha can provide. Life's a Journey. Stop Often.
| BRAND: | TEKONSHA |
| PART NUMBER: | 118264 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 0.4 LBS |
| UNIVERSAL OR SPECIFIC FIT: | SPECIFIC |
| CIRCUIT PROTECTED: | NO |
| HARNESS TYPE: | MALE FEMALE |
| TERMINAL QUANTITY: | 4 |
| WIRE COLORS: | BROWN, GREEN, YELLOW, WHITE |
| WIRE QUANTITY: | 4 |
| WIRE GAUGE: | 18 AWG, .85 AVSS |
| POWER LEAD REQUIRED: | NO |
| HARDWARE INCLUDED: | YES |

Tekonsha is a leading manufacturer of electronic trailer brake controllers, pioneering the category in the 1970s. The lineup spans proportional units such as the Prodigy P3 and Prodigy iD, time-delayed controllers, the wireless Prodigy RF, plus vehicle-specific wiring harnesses, adapters and trailer brake components engineered for smooth, predictable stopping at any speed.
Tekonsha Engineering Company began in 1964 building RV steps and mirrors. Within a few years it had found its real calling, and by the 1970s Tekonsha was pioneering the manufacture of electronic trailer brake controllers, the product category that still defines the brand. More than half a century later it remains the reference name in trailer braking and is part of the Horizon Global group alongside Reese, Draw-Tite, Fulton, Bulldog and Wesbar.
A brake controller is the component that tells a trailer's electric brakes how hard to work and when, and getting that right is the difference between a controlled stop and a shove from behind. Tekonsha builds both major types. Proportional controllers use an internal accelerometer to sense how quickly the tow vehicle is slowing and apply trailer braking to match, so light braking stays light and hard braking is immediate. Time-delayed controllers ramp to a preset output over a fixed interval, a simpler and more economical approach that suits occasional towing.
The current brake controller range covers most of that ground. The Prodigy iD pairs with a phone through Tekonsha's EDGE technology for setup and monitoring, the P3 offers storable settings for multiple trailers and a trilingual colour LED display, the Prodigy P2 adds a dimmable display and boost mode for heavier loads, and the Voyager keeps operation simple and dependable. The Prodigy RF mounts to the trailer itself and controls wirelessly, which suits rental fleets and drivers who swap tow vehicles.
Installation is supported by vehicle-specific brake control harnesses that plug into a factory connector rather than requiring cut-and-splice wiring, along with mounting brackets and adapters. Matched controller bundles pair a unit with the correct harness. Products are tested to meet and often exceed published industry standards.
Experts available to answer your questions
Call 888-634-94941 Year
2 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2010 - 2017 | Chevrolet Equinox | Tow Harness Wiring Package Uses all existing holes. No Drilling required Install Time is 15 minutes |
| 2010 - 2017 | GMC Terrain | Tow Harness Wiring Package Uses all existing holes. No Drilling required Install Time is 15 minutes |
The Tekonsha Tow Harness, 4-Way Flat TK118264 (Part #TK118264) fits the following vehicles: 2010-2017 Chevrolet Equinox; 2010-2017 GMC Terrain. Always verify your specific year, make, and model before ordering.
The Tekonsha Tow Harness, 4-Way Flat TK118264 (Part #TK118264) fits 2010-2017 Chevrolet Equinox models. The 2017 model year is the last year covered by this part number. For newer models, check for an updated version.
Yes, the Tekonsha Tow Harness, 4-Way Flat TK118264 (Part #TK118264) is designed to fit the 2010-2017 Chevrolet Equinox.
The Tekonsha Tow Harness, 4-Way Flat TK118264 (Part #TK118264) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Yes, the T-Connector (part 118264-037) is designed for Chevrolet Equinox and GMC Terrain vehicles. Some vehicles may require your local GM dealer to activate the towplug option before installation. Test the tow plug for power before beginning installation to confirm the option is active.
You will need a Trim Panel Remover and a Test-probe. The Trim Panel Remover is used to carefully remove interior trim panels without damaging clips. The Test-probe is used to verify power at the tow plug before installation and to test the installation afterward.
The manual does not specify whether the battery must be disconnected. However, it does instruct you to reset the vehicle electrical system by temporarily removing the key from the ignition for the initial test after installation. Consult your vehicle's owner's manual or a GM dealer if you are uncertain about battery disconnection.
The grey 4-pin housing is taped to the taillight harness on the driver's side of the vehicle. You will locate it after opening the rear tailgate and removing the access panels, threshold, trunk floor panels and trays on the driver's side.
Insert the T-Connector harness into the vehicle's Tow-Plug harness and lock it into place. Be careful not to damage the locking tabs and ensure that the connectors are fully inserted with locking tabs in place. All connector surfaces should be clean and free of dirt before connecting.
Route the 4-flat connector through the driver's side trim panel into the side storage compartment and store it there when not in use. This protects the connector from damage and keeps it organized.
Secure the remainder of the T-Connector harness with the cable ties provided to prevent damage or rattling. Be careful to avoid any areas that would pinch, cut or melt the wire. Route the harness carefully through the trim panels to avoid sharp edges and hot surfaces.
On the driver's side, you must remove access panels, threshold, trunk floor panels and trays. You will also need to partially remove the lower interior trim panels on the driver's side only. Several trim panel fasteners will need to be removed. Be careful not to damage clips or parts during removal, and set all removed items aside carefully.
The maximum stop/turn light rating is 1 per side at 7.5 amps. Do not exceed this rating or the lower of your towing manufacturer's rating, whichever is lower. Overloading the circuit can cause fires.
The maximum tail light rating is 7.5 amps. Do not exceed this rating or the lower of your towing manufacturer's rating, whichever is lower. Overloading the circuit can cause fires.
Test and verify the installation with a test light or trailer once installed. For the initial test, reset the vehicle electrical system by temporarily removing the key from the ignition. All connections must be complete for the T-Connector to function properly. Use a test-probe or test light to verify power at the connector.
Yes. The manual states: 'Test the tow plug for power before installation.' This confirms that the towplug option is active on your vehicle. Some vehicles may require your local GM dealer to activate the towplug option before you begin installation.
Yes. All connector surfaces should be clean and free of dirt before you insert the T-Connector harness into the vehicle's Tow-Plug harness. Clean connections ensure proper electrical contact and function.
Yes. After securing the T-Connector harness with cable ties, reposition the access panels, trays and truck floor panels and reattach the threshold. This restores the interior to its original condition and protects the harness.
The T-Connector fits Chevrolet Equinox and GMC Terrain. Some vehicles may require your local GM dealer to activate the towplug option.
You need a Trim Panel Remover and a Test-probe. Cable ties are provided with the product.
No. The T-Connector connects to the existing factory tow plug harness. No drilling, cutting, welding or permanent modifications are required.
Maximum stop/turn light: 1 per side (7.5 amps). Maximum tail lights: 7.5 amps. Do not exceed the lower of these ratings or your towing manufacturer's rating.
First, verify that all connections are complete and fully inserted with locking tabs in place. Check that connector surfaces are clean and free of dirt. If connections are secure and clean, the towplug option may not be activated on your vehicle. Contact your local GM dealer to confirm the towplug option has been activated. Once activated, reset the vehicle electrical system by temporarily removing the key from the ignition and test again.
Ensure the T-Connector harness is fully inserted into the vehicle's Tow-Plug harness with locking tabs in place. Verify that the remainder of the harness is secured with the provided cable ties to prevent movement and rattling. Check that cable ties are tight and that the harness is not moving within the trim panels. If rattling persists, the connection may not be fully seated; disconnect and reconnect, ensuring full insertion.

Quick Ship
In stock and ready to ship — order now!
FREE ShippingFREE SHIPPING
Estimated delivery Wed, Sep 16 - Sat, Sep 19
Order before 2 PM EST Monday–Friday for same-day processing
Guaranteed safe & secure checkout
George
The staff was able to quickly assist me with locating the correct product I needed. Shipping was really fast. Item arrived in 2 days. Will be using TowUniverse again!!
May 22, 2023