Trailer Wiring and Bracket For 10‑22 Lexus RX350 RX450h without Factory Tow Package Plug & Play 4‑Flat Harness
Model: 118255 118144 'Includes Everything Pictured:
Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
Installation Instructions
Fits The Following Vehicles:
2010 - 2022 Lexus RX 350 without factory Tow Package
2010 - 2022 Lexus RX 450h without factory tow package
Wiring Kit Specs:
| Part Number | 118255 |
| Brand | Tekonsha |
| Warranty | 1 Year |
| Installation Instructions |  |
| Part Number | 118144 |
| Fits | 4 Flat Connectors |
| Brand | Tow Ready |
| Mounts electrical connector to attachment bracket Includes screws and nuts Attractive point-of-purchase packaging |
|
| Warranty | 1 Year |
Questions or Comments? Call 702-374-8999
Thank you for choosing Tekonsha, the most powerful name in trailer light wiring and brake control system. Our trailer wiring harness is vehicle specific, requires no splicing or cutting of the wires. Simply plug & play and your vehicle will be able to control trailers brake, turn and running lights. Trailer wiring kit comes with a 1 year warranty and everything necessary to install the trailer plug wiring. Tekonsha manufactures a wider range of different products for hooking up trailer lights to your Car Truck or SUV. T-One connectors work great with boat trailer wiring and utility trailer wiring. Typically those trailers will use the standard 4 flat plug which is what our T One connectors offer. If you have an RV Fifth Wheel or any other large type of trailer you will us a 7 pin trailer plug to control your electric trailer brakes. Tekonsha offers 7 pin trailer connector as well. Simply do a search above to see if there is a 7 wire trailer wiring available for hooking up your 7 way. If there is not you can use part number 85343 trailer wiring adapter to convert any 4-Flat into a 7-Way. In addition you will use part number 20506 which will include the rest of wiring needed for electric brake controls. You can also call us or email us any time and we will be able to provide information you need.
Partial list of fitment years:
10 11 12 13 14 15 16 17 18 19 20 21 22 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
$66 75 $74.13 10% OFF
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$74.13 $66 75
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Product Details
- Brand: Tekonsha
- Model: 118255 118144 '
- Includes: Tow Custom Harness, Mounting Bracket
Compatibility Chart
Description
Includes Everything Pictured:
Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
Installation Instructions
Fits The Following Vehicles:
2010 - 2022 Lexus RX 350 without factory Tow Package
2010 - 2022 Lexus RX 450h without factory tow package
Wiring Kit Specs:
| Part Number | 118255 |
| Brand | Tekonsha |
| Warranty | 1 Year |
| Installation Instructions | |
| Part Number | 118144 |
| Fits | 4 Flat Connectors |
| Brand | Tow Ready |
| Mounts electrical connector to attachment bracket Includes screws and nuts Attractive point-of-purchase packaging |
|
| Warranty | 1 Year |
Questions or Comments? Call 702-374-8999
Thank you for choosing Tekonsha, the most powerful name in trailer light wiring and brake control system. Our trailer wiring harness is vehicle specific, requires no splicing or cutting of the wires. Simply plug & play and your vehicle will be able to control trailers brake, turn and running lights. Trailer wiring kit comes with a 1 year warranty and everything necessary to install the trailer plug wiring. Tekonsha manufactures a wider range of different products for hooking up trailer lights to your Car Truck or SUV. T-One connectors work great with boat trailer wiring and utility trailer wiring. Typically those trailers will use the standard 4 flat plug which is what our T One connectors offer. If you have an RV Fifth Wheel or any other large type of trailer you will us a 7 pin trailer plug to control your electric trailer brakes. Tekonsha offers 7 pin trailer connector as well. Simply do a search above to see if there is a 7 wire trailer wiring available for hooking up your 7 way. If there is not you can use part number 85343 trailer wiring adapter to convert any 4-Flat into a 7-Way. In addition you will use part number 20506 which will include the rest of wiring needed for electric brake controls. You can also call us or email us any time and we will be able to provide information you need.
Partial list of fitment years:
10 11 12 13 14 15 16 17 18 19 20 21 22 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
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Trailer Wiring and Bracket For 10-22 Lexus RX350 RX450h without Factory Tow Package Plug & Play 4-Flat Harness Install Notes
Installation Instructions for T-Connector Adapter for Lexus RX 350 and Lexus RX 450h
Part Numbers:
- 118255
Tools Required:
- Test Probe
Step-by-Step Instructions:
-
Open the Rear Hatch:
- Temporarily remove the rear threshold plate.
- On the passenger side, remove the floor covers and storage tray.
-
Partially Remove Interior Trim Panels:
- On the passenger side, partially remove the rear interior trim panel.
- Remove the necessary trim panel fasteners and carefully set aside all removed items to avoid damage.
-
Locate the Vehicle’s 10-Pin Connector:
- Behind the rear interior trim panel, locate the vehicle’s 10-pin connector.
- Ensure the mating surfaces of the vehicle harness connectors match the 10-pin tow plug adapter ends.
-
Connect the 10-Pin Tow Plug Adapter:
- Insert the 10-pin tow plug adapter into the mating connector and lock it into place.
- Ensure the connectors are fully inserted with locking tabs secure.
-
Locate the Vehicle’s Factory Tow Harness Connector:
- Behind the bumper, locate the factory tow harness connector.
- This connector will mate with the tow plug.
-
Connect the Tow Plug:
- Remove the protective cap from the factory tow harness connector.
- Clean the mating surfaces if necessary.
- Insert the tow plug into the connector and ensure it is fully inserted with locking tabs secure.
Warning:
- All connections must be complete for the T-Connector to function properly.
- Test the installation with a test light or trailer to ensure functionality.
- Reset the vehicle’s electrical system by temporarily removing the key from the ignition.
-
Secure Loose Wires:
- Secure all loose wires and mount the Trailer Tow Harness in an accessible location using a bracket or electrical box (not included).
- Reinstall the plastic trim panels, threshold, storage covers, and floor covering, ensuring no wires are pinched or cut during reassembly.
Warning:
- Overloading circuits can cause fires.
- Do not exceed the towing manufacturer’s ratings or the following specifications:
- Max. stop/turn light: 1 per side (2.1 amps)
- Max. tail lights: (5.6 amps)
Safety Notes:
- Follow all warnings and instructions carefully.
- Wear safety glasses and use safety precautions during installation.
Additional Notes:
- Refer to the vehicle owner’s manual for additional information.
Warranty and Technical Support:
- For complete warranty instructions, please download the full installation PDF.
- For technical support, visit www.trailerjacks.com or call 877-869-6690.
Attention: This is a summary of the installation procedure. For complete instructions, including diagrams and detailed information, please download the full installation PDF.
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