Wiring Harness Installation for 2017 Lexus RX450H Without Towing Package
Updated 07/16/2019 | Published 07/14/2019
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Question:
Hi, I ordered a tow hitch package for my 2017 Lexus RX450H that was NOT equipped with the tow package. After looking at your site, I called and was helped in ordering the right kit. The hitch went on with a snap, including connecting the harness that is located under the bumper. After reading the reviews here, I know I have the correct parts, but I cannot find the wiring in my Lexus to plug the # 118255 kit into. I am looking in the passenger side, rear compartment as described. I removed the floor covering that exposes the spare tire, and the plastic container, so that I can see the wiring that goes to the rear lights. I just dont want to keep disassembling the car if perhaps there is some other issue. Ive attached photos. Do all 2017 RX450H have this plug and located in the same place? Can you advise me, please. Thanks,
asked by: Anthony C
Expert Reply:
There there are two things that will help you find the install connectors on your vehicle to install this harness # 118255.
1. The T-One Vehicle ModuLite portion with the in-line fuse holder connects through the rear cargo area on the passenger side. It connects to the 10-pin plug included in your Lexus. The attached diagram should help in locating the access point and where the connection will be made.
2. The 4-way tow harness plug connects to the the trailer connection installs at the rear of your Lexus 450h under the driver side near the bumper. Using Dielectric Grease # 11755 will help to reduce potential for corrosion and maintain a good connection. Once connected there it can be routed over to the trailer hitch and secured with a mounting bracket Mounting Bracket 4-Pole Flat Item # 18144. The below video is a helpful resource to get you started.
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