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2020 - 2021 Lexus RX350
Confirmed to Fit






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Always the correct part
We know our products
Quality Products
Free Shipping!
| Battery-Powered | Yes |
| Converter Type | Circuit Protected and Powered |
| Electrical System Type | 3W |
| Finish | N/A |
| Material | Blank |
| Mount Type Description | Blank |
| Output Type | 4-Way Flat |
| Side Application Type Description | Blank |
| T-Connector Location | S8 |
| Tail Light Circuits | 6.0 Amps |
| Turn and Brake Circuits | 3.0 Amps |
| Warranty | One-Year Limited Warranty |

CURT offers a variety of high-quality trailer hitches and accessories for select vehicle models. Find the perfect fit for your towing needs at TowUniverse.
CURT, a Lippert brand, offers a complete line of towing products and is the leading manufacturer of custom-fit trailer hitches. We offer the broadest selection of custom-fit hitches, and each one is designed, welded, and coated in Wisconsin.
CURT is also a leader in flat towing products, as well as 5th wheel, gooseneck, and weight distribution hitches, ball mounts, electrical components, cargo solutions, and other towing accessories.
For everything from passenger cars and vans to full-size pickups and SUVs, CURT is 'The First Name in Towing Products®.'
Experts available to answer your questions
Call 888-634-94941 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2020 - 2021 | Lexus RX350 | — |
The 20-21 Lexus RX350 CURT 4-flat Plug and Play Trailer Wiring (Part #CTW1700) fits the following vehicles: 2020-2021 Lexus RX350. Always verify your specific year, make, and model before ordering.
Yes, the 20-21 Lexus RX350 CURT 4-flat Plug and Play Trailer Wiring (Part #CTW1700) is designed to fit the 2020-2021 Lexus RX350.
The 20-21 Lexus RX350 CURT 4-flat Plug and Play Trailer Wiring (Part #CTW1700) fits 2020-2021 Lexus RX350 models. The 2021 model year is the last year covered by this part number. For newer models, check for an updated version.
The 20-21 Lexus RX350 CURT 4-flat Plug and Play Trailer Wiring (Part #CTW1700) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Yes, the Curt 56217 custom wiring connector is designed for Toyota Highlander models from 2008 onwards. Installation procedures differ between 2008–2013 models and 2014+ models, so confirm your model year before beginning installation.
The Curt 56217 has a Signal Circuits rating of 3.0 amps per side and a Tail/Running Circuits rating of 6.0 amps total. The battery connection must be protected by a 10-amp maximum fuse. Do not exceed the product rating or your tow vehicle's lamp load rating, whichever is lower.
You will need a 10mm socket, ratchet, and panel trim removal tool. A 3/32" drill bit is also required if you need to drill a pilot hole for the grounding screw (not needed if an existing screw with nut is available in the vehicle frame).
Yes, you must disconnect the negative battery terminal before beginning installation. This is the first step for both 2008–2013 and 2014+ model years. Reconnect the battery only after all installation steps are complete.
On 2008–2013 models, the vehicle 10-pin connector is located on the driver side underneath the dash, between the emergency brake pedal and the brake pedal. The connector will be similar in appearance to the 10-pin connector on the custom wiring connector.
On 2008–2013 models, the vehicle 4-pin connector is located on the driver side in the trunk area. You must open the tailgate and remove the access panels, scuff panel, trunk panels and floor trays to access it. The connector surface should be free of rust, dirt and paint before insertion.
On 2014+ models, the vehicle taillight wiring harness connectors (both 10-pin and 4-pin) are located on the back of the vehicle under the rear scuff panel. You must remove trunk floor coverings, fold down rear seats, remove the center rear storage tray cover, remove plastic push fasteners along the bottom edge of the third row of seats, and remove the driver side storage cover and tray to access them.
The black converter box is secured using the provided double-sided tape. For 2008–2013 models, locate a flat spot under the dash. For 2014+ models, locate a flat spot inside the vehicle near the taillight. Ensure the surface is clean and dry before adhering the tape.
Insert the custom wiring connector ends fully into the vehicle connectors and ensure the locking tabs are in place. The connectors will be similar in appearance to those on the custom wiring connector. Do not force them; they should seat smoothly when properly aligned.
Drilling is not always required. You must locate a suitable grounding point, which can be an existing screw with nut in the vehicle frame. If no existing screw is available, you may drill a 3/32" pilot hole for the provided grounding screw. Before drilling, check for hidden items behind or under any surface to avoid damage and personal injury.
If an existing screw with nut is not available, drill a 3/32" pilot hole for the provided grounding screw. The area should be free of rust, dirt and paint before securing the white ground wire using the ring terminal and provided screw.
The Curt 56217 requires a 10-amp ATC fuse, which must be inserted into the inline fuse holder. The battery connection must be fuse-protected with a 10-amp maximum. Exceeding this rating can cause loss of warranty, overheating and potential fire.
The manual does not specify the exact location of the towing fuse. You must consult your vehicle owner's manual for the correct position of the towing fuse before inserting the provided 10-amp short fuse.
When in use, route the 4-flat to the center of the vehicle. When not in use, roll it up and store it in a convenient, out-of-the-way location. Secure any loose wires with the provided cable ties to prevent damage and tangling.
After installation, test the wiring connector for proper function by using a test light or connecting a properly wired trailer. All steps must be followed to ensure the connector functions properly. Install the provided 4-flat dust cover to help prevent corrosion.
The maximum fuse rating is 10 amps. The battery connection must be fuse-protected, 10-amp max. Exceeding this rating can cause loss of warranty, overheating and potential fire. Do not exceed the product rating or your tow vehicle's lamp load rating, whichever is lower.
Before drilling, check for miscellaneous items that may be hidden behind or under any surface to avoid damage and personal injury. This is especially important when drilling the 3/32" pilot hole for the grounding screw.
Open the tailgate and remove the access panels, scuff panel, trunk panels and floor trays on the driver side. Set aside all items. You must also remove the center rear storage tray cover and plastic push fasteners to access the vehicle 4-pin connector.
Open the tailgate and remove all trunk floor coverings and fold down the rear seats. Remove the center rear storage tray cover. Remove the plastic push fasteners along the bottom edge of the third row of seats. On the driver side, remove the side storage cover and tray by pulling upward. Remove the 10mm nut securing the storage tray and remove the tray. The taillight wiring harness connectors are then accessible under the rear scuff panel.
Yes, the Curt 56217 is designed for Toyota Highlander models 2008 and newer. Installation steps differ between 2008–2013 and 2014+ model years.
The Curt 56217 requires a 10-amp ATC fuse in the inline fuse holder and a 10-amp maximum fuse for the battery connection. Do not exceed this rating.
Signal Circuits: 3.0 amps per side. Tail/Running Circuits: 6.0 amps total. Do not exceed the product rating or your tow vehicle's lamp load rating, whichever is lower.
Test the connector for proper function using a test light or by connecting a properly wired trailer. Install the provided 4-flat dust cover to prevent corrosion.




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