Finding 10 Pin Connector on 2018 Lexus RX 450h L to Install Trailer Wiring

Question

Question:

I have a 2018 Lexus Rx 450HL and I cant locate the 10 pin plug. Do you have photos or a more detailed diagram of its location please? BTW your tow hitch 13394 is a confirmed fit to my car. Thanks

asked by: Paul S

0

Expert Reply:

Finding the 10-pin connector to install the Tekonsha trailer wiring harness part # 118525 that you mentioned on a 2018 Lexus RX 450h L is sometimes a bit challenging but we've had some customers come back and give us tips on where to find it.

One customer said:

"It is tucked up under the rear deck plate under the passenger taillight side. I used a mirror and flashlight to find it but realized that one I knew where it was I could feel it and pull it down just enough to plug the converter box into."

I also attached a picture of the install instructions that point out where the connector is too.

expert reply by: Jameson C

0

click to enlarge

Paul S.

3/8/2020

One customer said:It is tucked up under the rear deck plate under the passenger taillight side. I used a mirror and flashlight to find it but realized that one I knew where it was I could feel it and pull it down just enough to plug the converter box into.Did anyone ever locate the person that said this?? Tekonsha dont even list the Lexus 450 HL. This is driving me crazy!!

Reply

Chris R.

3/10/2020

That description was part of a submitted customer review on the Tekonsha Harness # 118255 for your Lexus 450h. If you take a look at the product page (linked below) and click on the "Reviews" tab there are a few more that try to explain the plug location and some include pictures. This should hopefully help but if not let me know and we will go from there!

Helpful Links

Custom-Fit-Vehicle-Wiring/Tekonsha/118255.html

Reply

Alex_m

6/20/2020

@PaulS on my 2018 RX 350L I found 10-pin connector on the DRIVER side of the quarter panel. With blank male connector attached. In trunk area(Driver Side). 1- Remove small cover piece. 2- Remove stored cargo cover. 3- Pull up/out plastic spacer from quarter panel. I'm sure that while hitch is different for L models, wiring is not. Sadly I can't attach my pictures in reply. Tested and found LEFT TURN, RIGHT TURN, BRAKES, TAIL also GROUND and constant BATTERY + but they are using very small wires with small amperage so Tekonsha 118225 will take care of that. The only thing I wasn't able to find is a 4-pin grey connector to attach a trailer harness. I'm thinking to splice trailer harnes into Tekonsha 118255.

Reply

Answer 1

Judging by the picture you sent in it looks like you are trying to use the wrong connector to install the #118255 in your 2019 Lexus RX 350. I attached a picture to this page as well that shows your connector pictured very close to where the #118255…

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Answer 2

The T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part #118255 is designed for a 2017 Lexus RX 350 without a tow package. Since the vehicle does not have a tow package there should be a 10-pin connector located behind the rear…

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Answer 3

First, the trailer wiring harness #56083 is only a fit if your 2015 Lexus RX 350 came with the factory tow package. If it did not then that could be why it isn't working. Or, if it does have the factory tow package, it could be a missing fuse or…

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Answer 4

If you are sure your 2018 Lexus RX 350L does not have the factory tow package then your only option is to hardwire a 4-way to your vehicle with a universal kit, the Vehicle Wiring Harness #C59236.

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Answer 5

I'm assuming that you're needing to know so you can choose the correct wiring harness, correct? You could call your Lexus dealer and give them your VIN, and they should be able to tell you how your RX350 is equipped. Or, you could remove the…

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Answer 6

From your description, it sounds like your 2016 Lexus RX 450h F-Sport does not have the factory tow package and you are looking for a wiring harness that will work, and we do have that, with the correct part being from Tekonsha: - T-One Vehicle…

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Answer 7

I have taken a look at the Draw-Tite Max-Frame Trailer Hitch Receiver item #75540. This hitch is confirmed to fit your 2022 Lexus RX 350 and it does require some minor trimming of the lower portion of the rear trim. I have linked a couple of pictures…

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Answer 8

Yes we do have the instructions for the T-One Vehicle Wiring Harness #118255 for your 2018 Lexus RX 450h L. I am linking the written instructions for you to check out as well as pictures of the instructions that you can reference. Since you're…

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Answer 9

Sounds like your 2011 Lexus RX450H does not have the tow package so there is a missing harness needed to activate the 4-way wiring. Because of that you would want the Tow Ready Wiring harness part #118255 that you referenced as it comes with the…

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Answer 10

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.…

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Answer 11

Yes, for your 2016 Lexus RX 350 that does not have the factory tow package the correct trailer wiring kit you need is the part #118255.

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Answer 12

For your 2022 Lexus RX 350 the Curt T-Connector Vehicle Wiring Harness #56083 will connect to the factory tow package with no other parts required. This will give you a 4-way flat trailer connector on your Lexus. Currently the T-One Vehicle Wiring…

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Finding 10 Pin Connector on 2018 Lexus RX 450h L to Install Trailer Wiring

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