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

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 2

The manufacturers and installers (like us) have the luxury of lifts to install trailer hitches and other things but they are not required. It makes it easier for sure especially when making an installation video! You could install Curt trailer hitch…

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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 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 6

If your 2017 Lexus RX 350 didn't come with the factory tow package then an additional harness with a powered converter is needed to actually activate the plug that you used to install the Tekonsha T-One Vehicle Wiring Harness #118252. This…

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Answer 7

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 8

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 9

Yes, we do. To add a hitch to your 2024 Toyota Grand Highlander, I recommend the Curt Trailer Hitch item #C26VV. This hitch is custom fit and bolts to your Toyota with included hardware. This is a class III hitch with a 2" receiver. It has a…

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Answer 10

To add a hitch to your 2024 Toyota RAV4, I recommend the etrailer item #e23ZR. This hitch is custom fit and bolts to your Toyota with included hardware. This is a class III hitch with a 2" receiver. It has a 4,000 lbs towing capacity, and a 600…

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Answer 11

Yep, so long as your 2024 Subaru Crosstrek Wilderness is not a hybrid both the Curt and etrailer hitches will fit: - Curt Trailer Hitch Receiver #C13382 - etrailer Trailer Hitch Receiver #e98912 The only difference besides price is the finish; the…

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Answer 12

As far as wiring for the 2024 Toyota Grand Highlander, we do have the Curt #C59236 available which is more of a universal hardwire harness. Unfortunately there are not any plug-and-play options that have been confirmed to fit as of yet (October 4,…

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