Hitch and Wiring Installation on 2015 Lexus RX 350 F Sport Without Tow Package
Updated 05/30/2025 | Published 08/05/2018
Products Featured in This Question
Question:
Dear etrailer, How come there isnt an installation video for 118255 on a lexus rx 350 f sport? am I missing this video somewhere? I just purchased the curt trailer hitch 13143 and the wiring harness 118255. is it that straight forward to install both? should I install the wiring harness before the hitch like one of your reviewers have recommended? thank you so much and I look forward to installing my hitch later this week. sincerely
asked by: David
Helpful Expert Reply:
Thank you for purchasing Curt hitch # C13143 and 4-pole wiring harness kit # 118255 for your 2015 Lexus RX 350 F Sport without factory tow package.
We shoot installation videos as local customers bring in their vehicles. We may not always have access to a specific vehicle (or a specific version of one, such as the F Sport) to make a video for all compatible cars but we do have a video showing hitch installation on a 2015 Lexus RX 350 and this is linked for you along with the written instructions. You can refer to the instructions for a list of tools needed and step-by-step guidance. I also linked a helpful general article on hitch installation.
Most of the installation shown in the linked video will apply to all versions of the car. The order of installation between the hitch and the wiring is simply a matter of choice.
Product Page this Question was Asked From
T-One 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
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Trailer Hitch
- Shop: Trailer Wiring
- Video: Tekonsha T-One 4-Pole Wiring Install on a 2019 Lexus RX 350 – Towing-Ready in No Time
- Shop: T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Video: Mount: Curt T-Connector Vehicle Wiring Harness for Factory Tow Package on a 2015 Lexus RX 350
- Search Results: trailer hitch
- Shop: Brake Controller
- Video: Best 2015 Lexus RX 350 Hitch Options
- Video: Installation: T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector on a 2021 Lexus RX 350
- Video: How to Set Up Your Tekonsha Prodigy RF Wireless Brake Controller on a 2006 Land Rover Range Rover
- Shop: Curt Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Shop: Tekonsha Prodigy RF Wireless Brake Controller - Trailer Mount w Remote - 1 to 3 Axles - Proportional
- Shop: Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector
- Shop: ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector and Installation Kit
- Shop: etrailer Trailer Hitch Receiver - Custom Fit - Matte Black Finish - Class III - 2"
- Shop: Floor Mats
- Video: Setting up the Universal Installation Kit for Trailer Brake Controller on a 2019 Toyota Highlander
- Video: Mount: Curt T-Connector Vehicle Wiring Harness for Factory Tow Package on a 2021 Lexus RX 350
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: 7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires
- Q&A: Correct Trailer Wiring Harness for 2015 Lexus RX350
- Q&A: Recommended Wiring Harness for 2015 Lexus RX350 Without Factory Tow Package
- Q&A: Recommended 7-Way Connector for a 2014 Lexus RX 450h
- Q&A: Is There a Trailer Hitch for a 2022 Lexus RX 350 F Sport?
- Q&A: How to Determine if 2012 Lexus RX 350 has Factory Tow Package for Wiring Harness
- Q&A: Installation of Trailer Wiring Harness on 2018 Lexus RX 350L
- Q&A: Do Self Adjusting Trailer Brake Assemblies Need to be Initially Adjusted
- Article: How to Measure for Travel Trailer and Fifth Wheel Steps
- Article: My Trailer Hitch Doesn't Fit
- Article: Trailer Lighting Requirements
on Custom Fit Vehicle Wiring
Ken
5/24/2025
I am having issue installing wiring harness from Tekonsha 118255. Hardware hitch went in great! The problem is the wiring harness. I too have 2015 Lexus RX350 Fsport. I could not find 10 pin connector passenger rear corner where there is supposed to be one. My online research for this models says there isnt one...no prep for a tow package on this trim of the RX350. What are my options? Is there a generic harness I can splice into the tail lights? Another modular harness for this model RX350. Just tried online chat with Etrailer and was told nothing available. thanks!!!