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Tekonsha
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2008 - 2019 Toyota Highlander
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Tekonsha T-One connector (also referred to as T-Connector) wiring harnesses are the fastest and easiest way to add an electrical connector to the back of your vehicle. These connectors are used to link the wiring from your vehicle to the trailer when towing. Tekonsha T-One connectors 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 T-One connectors. To install a Tekonsha T-One wiring harness, simply locate your vehicle's wiring harness connector typically behind the vehicle taillight - unplug the connection and insert the T-Connector into the vehicle's harness. It's that easy! So what are you waiting for? Hit the road with the peace of mind only Tekonsha can provide. Life's a Journey. Stop Often.
| BRAND: | TEKONSHA |
| PART NUMBER: | 118449 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 1 LBS |
| UNIVERSAL OR SPECIFIC FIT: | SPECIFIC |
| CIRCUIT PROTECTED: | YES |
| HARNESS TYPE: | MALE FEMALE |
| TERMINAL QUANTITY: | 4 |
| WIRE COLORS: | BROWN, GREEN, YELLOW, WHITE |
| WIRE QUANTITY: | 4 |
| WIRE GAUGE: | 16 GA. |
| POWER LEAD REQUIRED: | NO |
| ELECTRICAL SYSTEM TYPE: | 3-WIRE SYSTEM |
| 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.
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1 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2008 - 2019 | Toyota Highlander | Tow Harness T: Connector Assembly Uses all existing holes. No Drilling required Install Time is 20 minutes |
Yes, the 2008-2013 Toyota Highlander, 2014-2019 Toyota Highlander Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118449 (Part #TK118449) is designed to fit the 2008-2019 Toyota Highlander.
The 2008-2013 Toyota Highlander, 2014-2019 Toyota Highlander Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118449 (Part #TK118449) fits the following vehicles: 2008-2019 Toyota Highlander. Always verify your specific year, make, and model before ordering.
The 2008-2013 Toyota Highlander, 2014-2019 Toyota Highlander Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118449 (Part #TK118449) fits 2008-2019 Toyota Highlander models. The 2019 model year is the last year covered by this part number. For newer models, check for an updated version.
The 2008-2013 Toyota Highlander, 2014-2019 Toyota Highlander Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118449 (Part #TK118449) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Yes, the T-Connector is designed for Toyota Highlander 2008-2013 and 2014-Current models. Installation procedures differ between these model years: 2008-2013 models require accessing the 10-pin tow plug under the dash on the driver's side, while 2014-Current models have the 10-pin and 4-pin connectors located behind the rear interior trim panel. Consult your vehicle's owner's manual to confirm your model year and factory tow connector configuration.
The kit includes the T-Connector black converter box, 10-pin and 4-pin tow-plug adapters, a 10A fuse, double-sided tape for mounting the converter box, and cable ties for securing the wire harness. An additional 10 amp fuse is located on the wiring harness underneath the dash between the 10-pin tow plug and the black box. The 4-flat connector should be stored in the trunk or rear cargo area when not in use.
You will need a test-probe and a trim panel remover. The test-probe is used to verify electrical connections, and the trim panel remover is needed to safely remove interior trim panels without damage during installation.
The manual does not specify that the battery must be disconnected before installation. However, the manual does state that for the initial test after installation, you should reset the vehicle electrical system by temporarily removing the key from the ignition.
On 2008-2013 models, route the converter over to the driver's side kick panel area and mount the black box in the opening between the vehicle body and the emergency brake pedal bracket using the double-sided tape provided. Be careful to avoid areas that would cut or pinch the wire.
On 2014-Current models, locate a flat surface in an out-of-the-way place on the driver's side and mount the T-Connector's black converter box with the double-sided tape provided.
Locate the vehicle's 10-pin tow plug underneath the dash on the driver's side between the emergency brake pedal and the brake pedal. Check that the mating surfaces match, then insert the 10-pin tow plug adapter and lock it into place. Be careful not to damage the locking tabs and ensure that connectors are fully inserted with locking tabs in place.
Open the vehicle's rear tailgate and remove access panels, threshold, trunk floor panels and trays on the driver's side. Locate the vehicle's factory 4-pin tow harness connector. Check that the mating surfaces are clean and free of dirt, then insert the 4-pin tow-plug adapter and lock it into place. Be careful not to damage the locking tabs and ensure connectors are fully inserted with locking tabs in place.
Open the rear tailgate and remove access panels, threshold, trunk floor panels and trays on the driver's side. Locate the 10-pin connector behind the rear interior trim panel and insert the 10-pin tow-plug adapter, locking it into place. Then locate the 4-pin connector behind the rear interior trim panel and insert the 4-pin tow-plug adapter, locking it into place. Ensure all locking tabs are engaged.
After mounting the black box, use the cable ties provided to secure the remainder of the wire harness and prevent wires from being exposed underneath the dash area. Be careful to avoid any areas that would cut or pinch the wire.
After repositioning the trays, trunk floor panels and access panels and reattaching the threshold, proceed to Step 8: open the hood and locate the vehicle fuse panel on the driver's side. Consulting your owner's manual, locate the Towing Fuse location and insert the 10A fuse provided.
Use a 10A fuse only. Do not replace with any fuse that exceeds 10 amps. An additional 10 amp fuse is located on the wiring harness underneath the dash between the 10-pin tow plug and the black box.
Do not exceed the lower of your towing manufacturer's rating or the following limits: maximum stop/turn light is 1 per side (2.1 amps), and maximum tail lights are 5.6 amps. Overloading the circuit can cause fires. Consult your vehicle's owner's manual and instruction sheet for additional information.
All connections must be complete for the T-Connector to function properly. Test and verify 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.
Store the 4-flat connector in the trunk or rear cargo area when not in use.
Wear safety glasses and use all safety precautions during installation. Be careful not to damage the locking tabs on connectors. Avoid areas that would cut or pinch the wire harness. When removing interior panels, set aside all items carefully to avoid damaging parts. Ensure all connector surfaces are clean and free of dirt before inserting adapters.
Yes, it fits Toyota Highlander 2008-2013 and 2014-Current models. Installation steps differ by model year.
You need a test-probe and a trim panel remover.
No, the manual does not mention drilling. The black box is mounted using double-sided tape provided, and connectors are inserted into existing factory tow plugs.
Use a 10A fuse only. Do not exceed 10 amps.
Maximum stop/turn light is 1 per side (2.1 amps) and maximum tail lights are 5.6 amps. Do not exceed the lower of your towing manufacturer's rating or these limits.
Test with a test light or trailer once all connections are complete. Reset the vehicle electrical system by temporarily removing the ignition key for the initial test.
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May 22, 2023
