Wiring Harness for 2024 Lexus RX 350

Updated 07/15/2025 | Published 07/11/2025

Question:

HI, I would like to install the harness for my Lexus RX 350 but the dealer claimed that my vehicle was not equipped towing package. Do you have any suggestion?Thank you. Phil

asked by: Philip P

Expert Reply:

Hey Phil! You do not need a factory tow package to install a wiring harness on your 2024 Lexus RX 350. You can use the T-One Vehicle Wiring Harness # TK92KR. This plugs into the connection points in the rear cargo area and then a hot lead will run up to your battery. Once installed you will have a 4-way to power your trailer's signal lights.

Do you already have a hitch on your vehicle?

expert reply by: Robin H

T-One Vehicle Wiring Harness
(click to enlarge)

Phil

7/14/2025

Hi Robin, Yes, I had a hitch on my Rx 350, and it's 2023. Does it still work? and do you have any instruction to install the harness on You Tube? Thank you so much, Phil

Robin H.

7/15/2025

@Phil the same hitch from the 2023 will carry over. We have not had a chance to install this on that vehicle yet so we don't have a video. The instructions from Tekonsha are pretty good so I'm sure you can manage using those.

Helpful Links

instructions.aspx?pn=tk92kr