Recommended Wiring Harness for a 2013 Lexus RX 350
Updated 12/08/2025 | Published 11/13/2025
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Question:
I have a 2013 Lexus RX 350 all-wheel drive. Can you tell me what I need to install on this car so I can have a trailer light plug? If you have an install video as well that would help. Thank you. Jim
asked by: Jim J
Expert Reply:
Hey Jim, thanks for the information. However, I can not do anything with that VIN number so I went ahead and deleted it.
There's two options for trailer wiring that fit the 2013 Lexus RX 350. The Curt T-Connector Vehicle Wiring Harness item # 56083 is designed for the models that have the factory tow package. If you have the tow package there's going to be a plastic plug underneath the right rear of your SUV by the bumper. I linked a video below that shows this location at the 30 second mark. The Curt item # 56083 is going to plug directly into it and provide you with a 4-way connector.
If you do not have the factory tow package you'll need the Curt T-Connector Vehicle Wiring Harness item # C36PQ.
Does your 2013 Lexus RX 350 have the factory tow package?
You can add this information and any other questions you have where it says Add Comment and I'll be happy to answer them.
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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
- CURT
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Jerred H.
12/8/2025
Hey Jim, what did you find out about your Lexus—does it have the factory tow package or not? Knowing that will help confirm whether the Curt or the ZCI wiring harness worked best for your setup. Your update could make it easier for others adding trailer wiring to their RX 350.