For 2004‑2008 Acura TL Trailer Wiring 4 Way Fits All Models Curt 56231
Model: 56231-CW21This Wiring 4-Flat Fits The Following Vehicles:
2004 - 2008 Acura TL All Models
This Wiring 4-Flat Includes the Following Parts:
- Custom Wiring Harness, 4-Way Flat Output (Plug & Play)
- Installation instructions, schematics, diagrams, and hardware (if required).
List of Fitment Years:
2004, 2005, 2006, 2007, 2008
CURT 56231 Vehicle-Side Custom 4-Pin Trailer Wiring Harness
Manufactured by: Curt
If your vehicle is not equipped with wiring for towing a trailer, CURT custom wiring is the ideal solution A custom wiring harness -- also called a T-connector -- is a simple, plug-and-play electrical device that plugs into your automotive electric system and provides a standard, universal trailer wiring connection This is done using two or more vehicle-specific, OEM-compatible connectors to plug into the taillight assembly, eliminating the need for cutting, splicing and soldering during installation.
Custom wiring harnesses are made vehicle-specific, and while they are not available for all vehicles, they do offer one of the fastest, easiest and most secure ways to wire a vehicle for towing This particular plug-in harness provides a 4-way flat connector socket and is designed to be a custom wiring harness to fit certain years of the Acura TL (to verify your vehicle compatibility, see application info) It comes with all necessary wiring components to establish a reliable trailer wiring connection, as well as a dust cover to keep the connector clean when not in use.
You have a picture in mind of your next destination -- maybe it's the boat landing at your favorite fishing spot, maybe it's a campsite that overlooks one of nature's masterpieces, or maybe it's the next big jobsite However, turning that picture into a reality takes more than just daydreaming It takes a solid connection and the right amount of power.
CURT custom wiring is made with some of the most sophisticated technology in the industry and is designed to install with ease, giving you a long-lasting electrical connection for your towing hitch setup..
Features:
- Plugs into vehicle tail light assembly to provide a 4-way flat socket
- Simple plug-and-play design eliminates the need for cutting or splicing
- 4-way flat output connects tail lights, brake lights and turn signals
- Equipped with tail light converter for vehicle-trailer compatibility
- Constructed with SMT circuitry for better performance and durability
- Dust cover included to keep connector clean when not in use
- Backed by a limited one-year warranty
Hitches Near Me: We operate out of several warehouses across the country, ensuring faster delivery to your location.
$51 73 $63.95 19% OFF
- Best Price on Web Guarantee
- Fastest Shipping
- FREE Shipping
- Pre-Order
We match lower prices from major authorized retailers for brand-new products in original packaging, provided the item is in stock. The competing seller must be an authorized, professional retail business; offers from
individuals, auctions, peer-to-peer sites, or unauthorized sellers don’t qualify. Used, refurbished, or open-box items are excluded.
Please see our full terms for details.
Verify Fitment
$63.95 $51 73
Learn more
Questions? Call our Auto Experts at (877) 869-6690
Get it now, pay later
Select installments at checkout to split your purchase into 4 interest-free payments of $12.75 every 2 weeks.
- No fees, ever.
- No impact on your credit score.
Payment options are offered by Affirm and are subject to an eligibility check and might not be available in all states. CA Residents: Loans by Affirm Loan Services, LLC are made or arranged pursuant to a California Finance Lender license.
Installments in partnership with
.
Affirm and its offerings are supported in English only. Translations are not provided by Affirm.
Product Details
- Brand: Curt
- Model: 56231-CW21
- Includes: Custom Wiring Harness
Compatibility Chart
Get Expert Help
For 2004-2008 Acura TL Trailer Wiring 4 Way Fits All Models Curt 56231 Install Notes
Installation Instructions for Acura TL
Part Number:
- 56231
Tools Required:
- Panel trim removal tool
- Flat blade screwdriver
Wiring Access Locations:
- P3: Behind driver side taillight housing, inside trunk
- P4: Behind passenger side taillight housing, inside trunk
Step-by-Step Instructions:
-
Access the Vehicle's Wiring Harness Connectors:
- Open the trunk and remove all floor coverings.
- Remove the fasteners securing the rear scuff panel.
- Pull out the bottom of the scuff panel and then lift it up to remove.
- On both sides of the trunk, remove the push fasteners and screw-in fasteners securing the felt liner.
- Pull back the felt liner to expose the vehicle's taillight wiring harness connectors located behind the taillights at positions P3 and P4.
-
Disconnect the Negative Battery Terminal:
- Locate the vehicle battery on the driver's side under the hood.
- Disconnect the negative battery terminal to ensure safety during installation.
-
Separate the Taillight Connectors:
- Starting on the driver side, separate the vehicle's taillight wiring harness connectors from the taillight housing.
- Take care not to damage the locking tabs during disconnection.
-
Install the T-Connector on the Driver Side:
- Insert the T-connector end with the yellow wire between the separated two-pin connectors.
- Insert the T-connector end with the brown wire between the separated three-pin connectors.
- Ensure all connectors are fully inserted with locking tabs in place.
-
Establish a Ground Connection:
- Locate a suitable grounding point near the connector, such as an existing screw with a nut in the vehicle's frame.
- If no suitable grounding point is available, drill a 3/32" pilot hole for the provided screw.
- Ensure the area is free of rust, dirt, and paint.
- Secure the white ground wire using the ring terminal and provided screw.
Warning: Check for miscellaneous items that may be hidden behind or under any surface before drilling to avoid damage and/or personal injury.
-
Route the T-Connector to the Passenger Side:
- Route the T-connector end with the green wire to the passenger side behind the removed scuff panel.
- Repeat the connection process on the passenger side using the T-connector end with the green wire.
-
Mount the Converter Box:
- Locate a flat spot inside the vehicle near the taillight.
- Adhere the black converter box using the provided double-sided tape.
-
Position the 4-Flat Connector:
- When in use, route the 4-flat connector to the center of the vehicle.
- When not in use, roll up and store it in a convenient, out-of-the-way location.
- Secure any loose wires with the provided cable ties.
-
Reassemble the Vehicle Components:
- Reinstall all items removed during installation.
- Reconnect the negative battery terminal.
- Install the provided 4-flat dust cover to help prevent corrosion.
Safety Notes:
- Ensure all connectors are fully inserted with locking tabs to prevent disconnection.
- Secure loose wires to avoid contact with moving parts or hot surfaces.
- Avoid routing wires through areas that may cut or pinch them.
Warning: Do not exceed the product rating or the tow vehicle's lamp load rating, whichever is lower. Exceeding these ratings can cause loss of warranty, overheating, and potential fire.
Note: For more information, refer to the vehicle owner's manual or contact the vehicle manufacturer.
Installation Instructions for Acura TL
Part Number:
- 56231
Tools Required:
- Panel trim removal tool
- Flat blade screwdriver
Wiring Access Locations:
- P3: Behind driver side taillight housing, inside trunk
- P4: Behind passenger side taillight housing, inside trunk
Step-by-Step Instructions:
-
Access the Vehicle's Wiring Harness Connectors:
- Open the trunk and remove all floor coverings.
- Remove the fasteners securing the rear scuff panel.
- Pull out the bottom of the scuff panel and then lift it up to remove.
- On both sides of the trunk, remove the push fasteners and screw-in fasteners securing the felt liner.
- Pull back the felt liner to expose the vehicle's taillight wiring harness connectors located behind the taillights at positions P3 and P4.
-
Disconnect the Negative Battery Terminal:
- Locate the vehicle battery on the driver's side under the hood.
- Disconnect the negative battery terminal to ensure safety during installation.
-
Separate the Taillight Connectors:
- Starting on the driver side, separate the vehicle's taillight wiring harness connectors from the taillight housing.
- Take care not to damage the locking tabs during disconnection.
-
Install the T-Connector on the Driver Side:
- Insert the T-connector end with the yellow wire between the separated two-pin connectors.
- Insert the T-connector end with the brown wire between the separated three-pin connectors.
- Ensure all connectors are fully inserted with locking tabs in place.
-
Establish a Ground Connection:
- Locate a suitable grounding point near the connector, such as an existing screw with a nut in the vehicle's frame.
- If no suitable grounding point is available, drill a 3/32" pilot hole for the provided screw.
- Ensure the area is free of rust, dirt, and paint.
- Secure the white ground wire using the ring terminal and provided screw.
Warning: Check for miscellaneous items that may be hidden behind or under any surface before drilling to avoid damage and/or personal injury.
-
Route the T-Connector to the Passenger Side:
- Route the T-connector end with the green wire to the passenger side behind the removed scuff panel.
- Repeat the connection process on the passenger side using the T-connector end with the green wire.
-
Mount the Converter Box:
- Locate a flat spot inside the vehicle near the taillight.
- Adhere the black converter box using the provided double-sided tape.
-
Position the 4-Flat Connector:
- When in use, route the 4-flat connector to the center of the vehicle.
- When not in use, roll up and store it in a convenient, out-of-the-way location.
- Secure any loose wires with the provided cable ties.
-
Reassemble the Vehicle Components:
- Reinstall all items removed during installation.
- Reconnect the negative battery terminal.
- Install the provided 4-flat dust cover to help prevent corrosion.
Safety Notes:
- Ensure all connectors are fully inserted with locking tabs to prevent disconnection.
- Secure loose wires to avoid contact with moving parts or hot surfaces.
- Avoid routing wires through areas that may cut or pinch them.
Warning: Do not exceed the product rating or the tow vehicle's lamp load rating, whichever is lower. Exceeding these ratings can cause loss of warranty, overheating, and potential fire.
Note: For more information, refer to the vehicle owner's manual or contact the vehicle manufacturer.
Warranty:
For complete warranty information, please download the full installation PDF.
Technical Support:
For technical support and assistance, our team of experts is available to help. You can reach our tech support by visiting www.trailerjacks.com or calling 877-869-6690.
