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2021 - 2025 Toyota Sienna
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Original price was $87.50. Current price is $86.19.
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: | 118824 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 0.75 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 |
|---|---|---|
| 2021 - 2025 | Toyota Sienna | Tow Harness T: Connector Assembly Drilling Required Install Time is 30 minutes |
The 2021-2023 Toyota Sienna Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118824 (Part #TK118824) fits 2021-2025 Toyota Sienna models. The 2025 model year is the last year covered by this part number. For newer models, check for an updated version.
Yes, the 2021-2023 Toyota Sienna Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118824 (Part #TK118824) is designed to fit the 2021-2025 Toyota Sienna.
The 2021-2023 Toyota Sienna Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118824 (Part #TK118824) fits the following vehicles: 2021-2025 Toyota Sienna. Always verify your specific year, make, and model before ordering.
The 2021-2023 Toyota Sienna Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118824 (Part #TK118824) Drilling is required for installation. Basic hand tools are typically all you need.
Yes, the T-One® T-Connector is designed for the Toyota Sienna. The 8-pin vehicle connector is located on the driver's side near the floor of the vehicle, close to the rear seat.
You will need: trim panel remover, drill with 3/32" bit, 1/4" socket, Phillips head screwdriver, and test probe. Double-sided tape, cable ties, eyelet, and screw are provided with the product.
Yes. You must open the rear hatch, temporarily remove the rear threshold plate, privacy screen, storage covers, and floor covering. Open the rear door, fold the rear seat forward, and pull back the rear driver's trim panel to access the vehicle's harness and the 8-pin connector.
Yes. You must drill a 3/32" hole to secure the white ground wire using the eyelet and screw provided. The hole must be drilled in a suitable grounding point on the vehicle's frame or crossmember. Do not drill into the vehicle floor or bed, and verify what is behind any surface before drilling.
Always wear safety glasses and use all safety precautions during installation. Do not exceed the product's amperage rating or the towing manufacturer's rating stated in your vehicle's owner's manual. Verify all connections are complete before testing. Reset the vehicle electrical system by temporarily removing the ignition key for the initial test.
After installation, reset the vehicle electrical system by temporarily removing the ignition key. Then test and verify the installation using a test light or trailer. All connections must be complete for the T-One® T-Connector to function properly.
The T-One® T-Connector is a towing harness adapter that connects your vehicle's electrical system to a trailer. It includes an 8-pin tow-plug adapter that connects to your vehicle's factory connector, a black box module that houses the wiring, and a 4-flat connector for the trailer. The product allows you to safely power trailer lights and accessories.
The 8-pin connector is located on the driver's side of the vehicle, near the floor, close to the rear seat. You will need to pull back the rear driver's trim panel to access it.
Locate the vehicle's 8-pin connector on the driver's side near the floor, close to the rear seat. Insert the 8-pin tow-plug adapter into the connector and lock it into place. The adapter is keyed to fit only one way.
Mount the T-One® black box module on the driver's side using the double-sided tape provided. Choose a flat surface in an out-of-the-way location to prevent damage or rattling. Secure the remainder of the harness with the cable ties provided, being careful to avoid areas that would cut, pinch, or melt the wire.
Locate a suitable grounding point near the connector, such as the vehicle's frame or crossmember. Do not drill into the vehicle floor or bed. Clean dirt and rustproofing from the area, drill a 3/32" hole, and secure the white wire using the eyelet and screw provided.
Drill a 3/32" hole for the ground wire. This hole is used to secure the white wire using the eyelet and screw provided with the product.
Drill the ground wire hole in a suitable grounding point near the connector, such as the vehicle's frame or crossmember. Do not drill into the vehicle floor or bed. Before drilling, verify what is behind the surface to avoid damage to the vehicle or personal injury, and do not drill into any exposed surfaces.
Secure the T-One® harness with the cable ties provided to prevent damage or rattling. Be careful to avoid any areas that would cut, pinch, or melt the wire. When reinstalling trim panels, be careful not to pinch or cut the wires. Store the 4-flat connector in the rear cargo area when not in use; when in use, pull it through the door and close the door carefully to avoid pinching the harness in the door latch.
Store the 4-flat connector in the rear cargo area when not in use. When you need to use it, pull the 4-flat connector through the door and close the door. Be careful not to pinch the harness in the door latch.
Yes. After the T-One® T-Connector is installed and secured, reinstall the plastic trim panels, threshold, storage covers, floor covering, and other items removed during installation. Be careful not to pinch or cut the wires when reinstalling these components.
Do not exceed the lower of the towing manufacturer's rating (including the rating in your vehicle's owner's manual) or the specific amperage rating stated on the product. Overloading circuits can cause fires.
All connections must be complete for the T-One® T-Connector to function properly. Incomplete connections may prevent the trailer lights and accessories from working correctly and could create electrical hazards.
For the initial test, reset the vehicle's electrical system by temporarily removing the ignition key from the ignition. This clears any electrical faults and allows the system to recognize the new T-Connector.
Open the rear hatch and temporarily remove: the rear threshold plate, privacy screen, storage covers, and floor covering. Open the rear door and fold the rear seat forward. Several trim panel fasteners will need to be removed to access the panels. Set aside all items carefully to avoid damage, and be ready to reinstall them after installation.
Set aside all items removed during installation, being careful not to damage them. Keep track of all fasteners and components so you can reinstall them properly after the T-One® T-Connector installation is complete.
First, verify that all connections are complete. Reset the vehicle's electrical system by temporarily removing the ignition key from the ignition. Then test and verify the installation using a test light or trailer. If the connector still does not work, check that the 8-pin tow-plug adapter is fully locked into the vehicle's 8-pin connector, and ensure the ground wire is securely fastened to the frame or crossmember.
Secure the harness with the cable ties provided, being careful to avoid any areas that would cut, pinch, or melt the wire. When reinstalling trim panels and interior components, be careful not to pinch or cut the wires. When storing the 4-flat connector in the rear cargo area or pulling it through the door, be careful not to pinch the harness in the door latch.
Total for 4 items:
$162.14$163.45
Ann
Ordered online. Shipment arrived on time and with all the correct parts. Great customer service and friendly staff. Also, pricing was great!
May 22, 2023
You save $1.31
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