15-21 Subaru WRX STI CURT 4-flat Plug and Play Trailer WiringCURTOriginal price was $107.90. Current price is $106.47.In Stock
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2015 - 2021 Subaru WRX
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| 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 | P3,P4 |
| 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 |
|---|---|---|
| 2015 - 2021 | Subaru WRX | — |
The 15-21 Subaru WRX CURT 4-flat Plug and Play Trailer Wiring (Part #CTW2322) fits 2015-2021 Subaru WRX models. The 2021 model year is the last year covered by this part number. For newer models, check for an updated version.
The 15-21 Subaru WRX CURT 4-flat Plug and Play Trailer Wiring (Part #CTW2322) fits the following vehicles: 2015-2021 Subaru WRX. Always verify your specific year, make, and model before ordering.
Yes, the 15-21 Subaru WRX CURT 4-flat Plug and Play Trailer Wiring (Part #CTW2322) is designed to fit the 2015-2021 Subaru WRX.
The 15-21 Subaru WRX CURT 4-flat Plug and Play Trailer Wiring (Part #CTW2322) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Yes, part 56259 is designed for Subaru Impreza sedans with 2.0i engine in all trims. It is also compatible with Subaru WRX models. Verify your vehicle matches these specifications before purchasing.
Yes, the 56259 custom wiring harness is compatible with Subaru WRX models.
The signal circuits are rated for 3.0 amps per side, and the tail/running circuits are rated for 6.0 amps total. The battery connection must be fuse-protected with a 10-amp maximum fuse. Do not exceed the product rating or the tow vehicle lamp load rating, whichever is lower.
You will need: flat blade screwdriver, panel trim removal tool, wire stripper, wire crimper, ratchet, 10mm socket, and cutting tool.
Yes, you must disconnect the negative battery terminal before beginning installation. This is the first step in the installation process.
The wiring connection points are located behind the taillight housings inside the trunk. The driver side connection point (P3) is behind the driver side taillight housing, and the passenger side connection point (P4) is behind the passenger side taillight housing.
The custom wiring harness end with the yellow wire connects to the driver side taillight connectors. The harness end with the green wire connects to the passenger side taillight connectors.
Drilling may be required for the grounding point. You will need to locate an existing screw with nut in the vehicle frame near the taillight connector. If no suitable existing screw is available, you must drill a 3/32" pilot hole for the provided grounding screw. Before drilling, check for miscellaneous items that may be hidden behind or under any surface to avoid damage and personal injury.
The white wire is the ground wire. It must be secured using the ring terminal and provided screw to a suitable grounding point near the taillight connector, such as an existing screw with nut in the vehicle frame or a newly drilled 3/32" pilot hole.
The battery connection must be fuse-protected with a 10-amp maximum fuse. Exceeding this fuse rating can cause loss of warranty, overheating, and potential fire.
Locate a flat spot inside the vehicle near the taillight and adhere the black converter box using the provided double-sided tape.
When in use, route the 4-flat to the center of the vehicle and out of the trunk. When not in use, roll it up and store in a convenient, out-of-the-way location inside the trunk. Secure any loose wires with the provided cable ties.
After installation, reinstall all items removed during the install and reconnect the negative battery terminal. Install the provided 4-flat dust cover to prevent corrosion. Test the wiring harness for proper function by using a test light or connecting a properly wired trailer.
Do not exceed the product rating or the tow vehicle lamp load rating, whichever is lower. Exceeding either rating can cause loss of warranty, overheating, and potential fire. Consult your vehicle owner's manual or contact the vehicle manufacturer for your specific tow vehicle lamp load rating.
Remove the fasteners securing the rear scuff panel, then pull out on the bottom and then up to remove it. Take care not to damage the alignment tabs on the backside of the panel.
Pull back on the felt trunk liner to locate the vehicle taillight wiring harness connectors. Separate the connectors from the taillight housing, taking care not to damage the locking tabs.
Insert the custom wiring harness end (yellow wire for driver side, green wire for passenger side) between the separated vehicle taillight connectors. Make sure the connectors are fully inserted with locking tabs in place.
Yes, the 56259 is designed for Subaru Impreza sedans (2.0i all trims) and Subaru WRX models.
Flat blade screwdriver, panel trim removal tool, wire stripper, wire crimper, ratchet, 10mm socket, and cutting tool.
Yes, disconnect the negative battery terminal before starting installation.
Drilling may be required for the grounding point if an existing screw is not available. You would drill a 3/32" pilot hole for the provided grounding screw.
A 10-amp maximum fuse is required 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 tow vehicle lamp load rating, whichever is lower.
Test for proper function by using a test light or connecting a properly wired trailer.
Total for 4 items:
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