Product Details
- Brand: Tekonsha
- Model: 118824 118144
- Includes: T-One T-Connector Custom Harness, Mounting Bracket
Compatibility Chart
Description
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Trailer Wiring and Bracket For 21-24 Toyota Sienna Plug & Play 4-Flat Harness Install Notes
Installation Instructions for T-One® T-Connector for Toyota Sienna
Part Numbers:
- 118824
Tools Required:
- Trim Panel Remover
- Drill (3/32” Drill Bit)
- 1/4” Socket
- Phillips Head Screwdriver
- Test Probe
Step-by-Step Instructions:
-
Open the Rear Hatch:
- Temporarily remove the rear threshold plate, privacy screen, storage covers, and floor covering.
- Open the rear door and fold the rear seat forward.
- Remove all necessary trim panel fasteners to access the vehicle’s wiring. Set aside all items carefully.
-
Access the Driver-Side Wiring:
- Pull back the rear driver’s trim panel to access the vehicle’s harness.
-
Locate the 8-Pin Connector:
- On the driver’s side, locate the vehicle’s 8-pin connector near the floor, close to the rear seat.
- Insert the 8-Pin Tow-Plug Adapter into the connector and lock it in place.
-
Mount the Black Box:
- Mount the T-One® Connector black box on the driver’s side using the double-sided tape provided.
- Secure the remaining harness with the provided cable ties, avoiding areas that may cut or pinch the wire.
-
Ground the White Wire:
- Locate a suitable grounding point near the connector, such as the vehicle’s frame or crossmember.
- Clean the grounding area to remove dirt and rustproofing.
- Drill a 3/32” hole and secure the white wire using the provided eyelet and screw.
Caution: Verify the area behind any surface before drilling to avoid damage or injury. Do not drill into exposed surfaces.
-
Test the Installation:
- Ensure all connections are complete.
- Test the installation using a test light or trailer.
- Reset the vehicle’s electrical system by temporarily removing the key from the ignition.
-
Secure the Harness:
- Use the provided cable ties to secure the remaining T-One® T-Connector harness.
- Avoid areas that may pinch, cut, or melt the wire.
-
Reinstall Trim Panels:
- Reinstall all plastic trim panels, threshold covers, and floor coverings removed during installation.
- Ensure no wires are pinched or damaged.
-
Store the 4-Flat Connector:
- Store the 4-flat connector in the rear cargo area when not in use.
- When in use, pull the 4-flat connector through the door and close it carefully.
Warning: Be cautious not to pinch the harness in the door latch.
Safety Notes:
- Overloading circuits can cause fires. Do not exceed stated product ratings.
- Always wear safety glasses and follow all safety precautions during installation.
Manufacturer Notes:
- Refer to the vehicle owner’s manual and the instruction sheet for additional details.
- Store these instructions for future reference.
- Always follow all warnings and instructions printed on the tow vehicle’s battery.