Location Of Curt Wiring Harness Connections For a 2021 Lexus RX 350L Without Tow Package
Updated 07/07/2025 | Published 08/06/2021
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Question:
Where is the 4-pin connectors located on a 2021 Lexus RX350L? I believe I have found the 10-pin connector on the rear driver side as shown in the picture. I cant find any 4-pin connector though. Neither the 10 or 4 pin connectors are under the cargo tray along the back end of the vehicle like they are shown in Highlander installation videos/instructions. The 2021 RX350L has air ducts routed in that area and there are no connectors on the wire harness under the those ducts. Please help find the 4-pin and verify thats the correct 10-pin. Thanks
asked by: Mike
Expert Reply:
For the Curt T-Connector Vehicle Wiring Harness # C56217 on your 2021 Lexus RX 350L the connectors will be located in a different spot. The 10 pin connector should be located on the passenger side just below the taillight.
The 4 pin connector will be underneath the drivers side bumper cover. It may require you to use the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package # 56083 to make that connection. The video that I linked below will help you find the 4-pin connector.
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Product Page this Question was Asked From
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- Powered Converter
- No Tow Package
- 4 Flat
- Plug and Lead
- Plug-In
- Hidden
- CURT
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Johnny S.
7/2/2025
I'm having trouble finding the 4 pin connector on my 2021 RX350L with the tow package. I found the 10 pin but not the 4 ?? HELP!!