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2023 - 2025 Nissan ARIYA
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Always the correct part
We know our products
Quality 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 Per Circuit
Turn and Brake Circuits: 3.0 Amps
Installation Difficulty: Professional
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 Nissan Ariya (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
1 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2023 - 2025 | Nissan ARIYA | — |
The CURT Custom Wiring Harness, 4-Way Flat Output, Select Nissan Ariya 56511 (Part #BKDK56511) fits 2023-2025 Nissan ARIYA models. The 2025 model year is the last year covered by this part number. For newer models, check for an updated version.
Yes, the CURT Custom Wiring Harness, 4-Way Flat Output, Select Nissan Ariya 56511 (Part #BKDK56511) is designed to fit the 2023-2025 Nissan ARIYA.
The CURT Custom Wiring Harness, 4-Way Flat Output, Select Nissan Ariya 56511 (Part #BKDK56511) fits the following vehicles: 2023-2025 Nissan ARIYA. Always verify your specific year, make, and model before ordering.
The CURT Custom Wiring Harness, 4-Way Flat Output, Select Nissan Ariya 56511 (Part #BKDK56511) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Part 56511 is designed for passenger cars with factory taillight connectors located behind the driver and passenger side taillight housings outside the trunk (P1 and P2 locations). Before purchasing, verify your vehicle has accessible taillight connectors at these locations. If your vehicle's taillight connectors are located inside the trunk (P3/P4) or behind the bumper (P5/P6/P7), this product may not be compatible. Consult the vehicle manufacturer or a Curt representative to confirm fitment for your specific vehicle.
The product has the following electrical ratings: signal circuits (turn signals) are rated at 3.0 amps per side, and tail/running circuits are rated at 6.0 amps total. The battery connection must be fuse-protected with a 10-amp maximum fuse. Do not exceed the product rating or your tow vehicle's lamp load rating, whichever is lower.
Required tools are: ratchet, 10mm socket, socket extension, wire cutter, wire stripper, wire crimp tool, panel trim removal tool, and electrical tape. The manual notes that proper tools will improve installation quality and reduce time required. You will also need a fish wire or equivalent (such as a cut-up wire hanger, stiff wire, rope, or string) to route the harness through blind holes in the vehicle.
Yes. You must disconnect the negative battery terminal before beginning installation. Locate the battery under the hood on the passenger side, disconnect the negative terminal, and fasten this wire down and away from the battery. Reconnect the negative battery terminal only after all other installation steps are complete and the fuse has been installed.
Open the hatch and locate the taillight trim covers. Use a panel trim tool to loosen the trim cover. Using a 10mm socket, remove the two taillight fasteners. Remove the taillight by pulling out at an angle to the rear and side of the vehicle. Repeat this process on the other side. Do not disconnect the connector at the taillight itself; instead, locate the other connector just below the taillight connector and separate it from the taillight housing, taking care not to damage the locking tabs.
Fish wiring is a method to push or pull an electrical wire through a blind hole. Insert a fish wire (which can be a cut-up wire hanger, stiff wire, rope, or string) through the blind hole and locate it on the other side. Use tape to secure the harness to the fish wire and pull back up. If the fish wire or harness gets hung up, you may need to push back down, wiggle it around, or twist the wire to loosen it. Ensure the fish wire is long enough to stick out on the other side before inserting it.
Starting below the bumper, remove nine push fasteners securing the rear bumper trim. At the opening on the side of the driver-side bumper cover, route the fish wire down the bumper cover and locate it under the bumper cover at the rear of the vehicle. Locate the harness with the yellow wire and pull it up to the driver-side factory taillight harness, then attach the mating connectors. Route the green wire along the rear bumper to the passenger side and repeat the process with the green wire on the passenger side.
Locate a grounding point such as an existing screw or bolt in the vehicle frame. If no suitable existing fastener is available, you may drill a 3/32" pilot hole. The area must 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.
Locate a flat, clean surface that is out of the path of spray and debris from the rear wheels and road. Adhere the black converter box using the provided double-sided tape. Mounting the box in a protected area is critical; failure to do so can cause loss of warranty, product failure, overheating, and potential fire.
Use 12 GA wire or larger to route from the vehicle battery to the converter. The battery connection must be fuse-protected with a 10-amp maximum fuse. Install the fuse after all other installation steps are complete. Use a ring terminal for the battery connection. When passing the power wire through sheet metal, use an existing grommet, add a grommet, or use silicone to protect the wire from sharp edges.
The converter harness uses the following wire colors: green for right turn signal, red for brake, yellow for left turn signal, and brown for taillight. These wires connect to the factory taillight connectors at the P1 and P2 locations.
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.
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. The manual emphasizes that all steps must be followed to ensure the product will function properly.
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 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 converter system is designed to be used only on 12-volt negative ground electrical systems. Verify your vehicle has this type of electrical system before installation.
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. When routing the power wire to the battery, take care to avoid pinch points and hot or rotating components. Disconnect the negative battery cable before wiring the power wire.
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.
The 56511 is designed for passenger cars with factory taillight connectors at P1 and P2 locations (behind driver and passenger side taillight housings, outside the trunk). Verify your vehicle has connectors at these locations before purchasing.
You need a ratchet, 10mm socket, socket extension, wire cutter, wire stripper, wire crimp tool, panel trim removal tool, electrical tape, and a fish wire (or equivalent like a wire hanger). Cable ties and double-sided tape are provided.
Yes, disconnect the negative battery terminal before starting installation. Reconnect it only after all other steps are complete and the fuse is installed.
Drilling is required only if no existing screw or bolt is available for the ground wire connection. If needed, drill a 3/32" pilot hole in a clean, rust-free area. Always check for hidden items before drilling.
Signal circuits: 3.0 amps per side. Tail/running circuits: 6.0 amps total. Battery connection must use a 10-amp maximum fuse. Do not exceed the product rating or your vehicle's lamp load rating.
Use 12 GA wire or larger from the vehicle battery to the converter. The connection must be fuse-protected with a 10-amp maximum fuse, installed after all other steps are complete.
The 56511 is designed for 12-volt negative ground electrical systems only. Verify your vehicle has this system before installation.
After connecting the 12-volt power wire, test the harness with a test light, 4-flat tester, or a functioning trailer to verify proper operation.
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