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CURT
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2015 - 2020 Acura TLX
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Always the correct part
We know our products
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Vehicle battery connection required
Includes fuse holder, battery connection wiring and other necessary wiring components
Includes fuse holder, battery connection wiring and other necessary wiring components
Warranty: One-Year Limited Warranty
Finish: Blank
Electrical System Type: 3W
Tail Light Circuits: 6.0 Amps
Turn and Brake Circuits: 3.0 Amps
Installation Difficulty: Easy
Installation Time Exact (Minutes): 45
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 TLX (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.

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 888-634-9494One-year limited
1 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2015 - 2020 | Acura TLX | — |
Yes, the CURT Custom Wiring Harness, 4-Way Flat Output, Select Acura TLX (Part #BKDK56525) is designed to fit the 2015-2020 Acura TLX.
The CURT Custom Wiring Harness, 4-Way Flat Output, Select Acura TLX (Part #BKDK56525) fits the following vehicles: 2015-2020 Acura TLX. Always verify your specific year, make, and model before ordering.
The CURT Custom Wiring Harness, 4-Way Flat Output, Select Acura TLX (Part #BKDK56525) fits 2015-2020 Acura TLX models. The 2020 model year is the last year covered by this part number. For newer models, check for an updated version.
The CURT Custom Wiring Harness, 4-Way Flat Output, Select Acura TLX (Part #BKDK56525) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
The Curt 56525 is a powered converter system designed to convert trailer lighting signals for passenger cars with 12-volt negative ground electrical systems. It allows you to connect a trailer to your vehicle's electrical system by routing signals from the vehicle's taillights through the converter to a 4-flat trailer connector.
The Curt 56525 is designed for passenger cars with 12-volt negative ground electrical systems. The manual does not specify which vehicle models are compatible. Contact Curt Manufacturing or consult a fitment database with your vehicle's year, make, and model to confirm compatibility before purchasing.
No. The converter system is designed only for 12-volt negative ground systems. Do not use it on vehicles with positive ground or other electrical configurations.
Required tools are: ratchet, crimp tool, socket (8mm), wire cutter, socket extension, wire stripper, panel trim removal tool, small flathead screwdriver, and cutting tool. Proper tools will improve installation quality and reduce installation time.
The manual shows a hardware photo but does not itemize individual components. Included items referenced in the instructions are: custom wiring harness with brown, red, yellow, and green wires; black converter box; double-sided tape for mounting; provided sealant for grommet; cable ties; ground screw; ring terminal; 4-flat dust cover; and a 10-amp fuse holder. Consult the product packaging or contact Curt Manufacturing for a complete parts list.
Yes. Step 1 requires you to disconnect the negative battery terminal before beginning installation. Fasten this wire down and away from the battery during the installation process. Reconnect it only after all other steps are complete and the fuse is installed.
The manual rates installation difficulty as 'Easy'. However, installation difficulty levels are based on time and effort involved and may vary depending on installer expertise, vehicle condition, and availability of proper tools and equipment.
Open the vehicle trunk. Use a flathead screwdriver to remove the taillight fastener trim cover. Use an 8mm socket to remove the taillight fasteners (2 screws). Pull the taillight straight out from the side of the vehicle. Separate the connectors carefully, taking care not to damage the locking tabs. Repeat on the other side. Set the taillights aside in a safe place.
Lifting the floorboard exposes the tray above the spare tire, providing access to the trunk interior. Removing the threshold in the rear of the inner trunk (using a trim tool) and loosening the two push fasteners on each side allows you to pull back the felt trunk liner, which is necessary to access the grommet behind the taillight and route the converter wiring.
Locate the grommet behind the taillight where the vehicle's taillight wiring passes from inside the cabin to the taillight. Remove the grommet and cut a slit large enough to route the new custom wiring end through. Route the custom wiring end with the brown and red wires out through the grommet opening and through the slit in the grommet. Insert the custom wiring end with brown and red wires between the separated taillight connectors, ensuring the connectors are fully inserted with locking tabs in place. Reseat the grommet and use the provided sealant to seal the cut in the grommet and around all wires.
The wiring harness includes four signal wires: brown (taillight), red (brake), yellow (left turn), and green (right turn). Additionally, there is a black power wire (connects to positive battery terminal) and a white ground wire (connects to vehicle body ground). These colours are standard trailer lighting signal conventions.
Locate a flat spot on the driver side behind the felt liner in the trunk. Adhere the black converter box using the provided double-sided tape.
Locate a grounding point in the body of the vehicle behind the taillight, such as an existing screw or bolt in the frame. If no existing point is available, drill a 3/32" pilot hole. The area should be free from rust, dirt, and paint (use an abrasive pad or paper to remove rust and paint). Secure the white ground wire with the ring terminal on the existing fastener or with the provided ground screw. Before drilling, check for miscellaneous items that may be hidden behind or under any surface to avoid damage and personal injury.
Route the black power wire from the vehicle battery as shown on the provided 'Powered Converter Lead Instruction Sheet' on the last page of the manual. The power wire must be 12 GA or larger. Route it to the vehicle battery location, taking care to avoid pinch points and hot or rotating components. When passing the power wire through sheet metal, use an existing grommet, add a grommet, or use silicone to protect the power wire from sharp edges. Secure the power wire to the vehicle chassis using the provided cable ties. Use a ring terminal for the battery connection. Do not connect the battery until all other steps are complete.
When in use, route the 4-flat with the center of the vehicle and out of the hatch to the trailer, staying clear of the hatch's latching mechanism. When not in use, roll up and store in a convenient, out-of-the-way location. Secure any loose wires with the provided cable ties. Install the provided 4-flat dust cover to help prevent corrosion.
Drilling may be required. If a suitable existing ground point (screw or bolt in the vehicle frame) is not available behind the taillight, you must drill a 3/32" pilot hole for the ground wire connection. Before drilling, check for miscellaneous items that may be hidden behind or under any surface to avoid damage and personal injury. The area should be free from rust, dirt, and paint.
Yes. You must cut a slit in the grommet behind the taillight large enough to route the new custom wiring end (brown and red wires) through. After routing the wires, reseat the grommet and use the provided sealant to seal the cut in the grommet and around all wires.
Signal circuits are rated at 3.0 amps per side.
Tail and running circuits are rated at 6.0 amps total.
The battery connection must be fuse-protected with a 10-amp maximum fuse. Exceeding this rating can cause loss of warranty, overheating, and potential fire. Install the fuse after all other installation steps are complete.
The power wire must be 12 GA (12 gauge) or larger.
If drilling is necessary, the pilot hole size is 3/32".
If using the converter as a powered module for a two-wire system, the red brake wire must be grounded.
Do not lay tools across the positive battery terminal (typically noted with red covers or a red '+' symbol), as this can cause a ground short, resulting in sparks and/or electrical shocks. Disconnect the negative battery terminal before beginning installation and fasten this wire down and away from the battery. Do not reconnect the battery until all other installation steps are complete and the fuse is installed.
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 ground wire connection.
Do not exceed the product rating or tow vehicle lamp load rating, whichever is lower. Consult your vehicle owner's manual or contact the vehicle manufacturer for more information about your vehicle's lamp load rating.
Once the 12-volt power wire is connected to the harness, verify that the harness is functioning by attaching the battery and testing with a test light, 4-flat tester, or a functioning trailer. This should be done before considering the installation complete.
Periodic inspection of all wires and connections should be performed to ensure there is no visible damage or loose connections. This helps maintain proper function and prevent electrical issues.
The battery connection must use a 10-amp maximum fuse. Exceeding this can cause loss of warranty, overheating, and potential fire.
First, verify that the harness is functioning by testing with a test light, 4-flat tester, or a functioning trailer. Check that: 1) The negative battery terminal is properly reconnected. 2) The 10-amp fuse is installed in the fuse holder. 3) All wire connections are fully inserted with locking tabs in place. 4) The white ground wire is securely attached to a clean, rust-free ground point. 5) The black power wire is properly connected to the positive battery terminal with a ring terminal. 6) All signal wires (brown, red, yellow, green) are properly routed and connected. Perform periodic inspection of all wires and connections to ensure there is no visible damage or loose connections.
Exceeding the 10-amp maximum fuse rating can cause loss of warranty, overheating, and potential fire. Ensure the fuse holder is installed with a 10-amp fuse maximum. Do not exceed the product rating or the tow vehicle lamp load rating, whichever is lower. Do not lay tools across the positive battery terminal, as this can cause a ground short resulting in sparks.
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