Wiring Harness for 2021 Lexus GX460
Updated 07/02/2026 | Published 06/28/2026
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Question:
Hello - Im looking for a wiring harness for a 2021 Lexus GX460. I need a four pin harness to connect to brake lights on a hitch mounted rack. Ill be buying the hitch from you, but each time I search for a harness I either come up empty or am told it is not compatible with this vehicle. Thanks
asked by: Andrew N
Expert Reply:
Hey Andrew!
I totally understand your confusion and frustration there. I confirmed through Curt that Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector # C55384 is confirmed to fit all trim levels of the 2021 Lexus GX460, but it's implying that your vehicle comes with a factory 4-flat connector, so you'll want to confirm that you don't already have one installed. It's not uncommon for our neighbors to call us and tell us that they found the connector hidden under the vehicle or behind their bumper.
If your GX460 does not have the round factory connection shown on the # C55384, then you can use the Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector # C59236. This kit is a splice in kit, so you'll have to wire directly to your vehicle's tail lights. The kit comes with quick splice connectors for a quick install, but it's highly recommended to use Deka Heat Shrink Butt Connector - 16-14 Gauge - Nylon Insulation - Blue - Qty 5 # DW05744-5 for a more secure connection.
You can pair this directly with Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" # C13043 to have the full towing package. What kind of accessory are you planning on using these parts for? Are you doing preventative maintenance or a full replacement?
Product Page this Question was Asked From
Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- No Converter
- Factory Tow Package
- 4 Flat
- Plug and Lead
- Plug-In
- CURT
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