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Plugs into existing OEM vehicle socket to provide a 4-way flat socket
Installation Point(s): S8
| Battery-Powered | Yes |
| Electrical Package Type | Packaged |
| Electrical System Type | 3W |
| Electrical Component Location | Vehicle / Trailer |
| Converter Type | Circuit Protected, Powered, Potted |
| Material | THERMOPLASTIC RUBBER |
| T-Connector Location | S8 |
| Tail Light Circuits | 6.0 Amps |
| Turn and Brake Circuits | 3.0 Amps |
| Warranty | One-Year Limited Warranty |
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 Murano (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®.'
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1 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2025 - 2026 | Nissan Murano | Installation time: 30-60 minutes |
The CURT 56556 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Nissan Murano (Part #BKDK56556) fits 2025-2026 Nissan Murano models. The 2026 model year is the last year covered by this part number. For newer models, check for an updated version.
Yes, the CURT 56556 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Nissan Murano (Part #BKDK56556) is designed to fit the 2025-2026 Nissan Murano.
The CURT 56556 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Nissan Murano (Part #BKDK56556) fits the following vehicles: 2025-2026 Nissan Murano. Always verify your specific year, make, and model before ordering.
The CURT 56556 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Nissan Murano (Part #BKDK56556) Typical installation time is 30-60 minutes. Basic hand tools are typically all you need.
Part 56556 is a lighting module with a 4-flat connector made by Curt Manufacturing for SUVs and vans. It provides trailer lighting control by connecting to your vehicle's electrical system and routing a 4-flat connector to the rear cargo area for trailer hookup. The module handles signal circuits (3.0 amps per side) and tail/running circuits (6.0 amps total).
Part 56556 is designed for SUVs and vans. The manual does not specify which makes, models, or model years are compatible. Contact Curt Manufacturing or check the product fitment database to confirm compatibility with your specific vehicle.
You will need: ratchet (1/4" or 3/8"), 10mm socket, 6" extension, 10mm wrench, test light, and Phillips screwdriver. The manual also recommends an abrasive pad or paper to clean rust and paint from the grounding area.
The kit includes: a lighting module, a gray 6-pin connector, a white ground wire with ring terminal, a ground screw, double-sided tape, cable ties, and a gray 6-pin dummy plug. The dummy plug should be stored in the glove box when not in use.
Yes. You must disconnect the negative battery cable before beginning installation. Ensure the disconnected cable is isolated to prevent it from touching a metal surface, which could damage the vehicle's electrical system. Reconnect the battery only after all other installation steps are complete (Step 7).
Open the hood and disconnect the negative battery cable. Open the vehicle's rear hatch and remove all trunk floor coverings. Check for miscellaneous items hidden behind or under surfaces before drilling to avoid damage or injury. The manual rates installation difficulty as 'Easy'.
The gray 6-pin connector is located on the driver side of the lower cargo area. The manual indicates the wiring location as 'S8' (under rear floor panel) for this product, though the exact location may vary by vehicle. Refer to the Wiring Location Guide diagram in the manual for your specific vehicle type.
Locate the gray 6-pin dummy plug on the driver side of the lower cargo area and remove it. Connect the gray 6-pin connector from the lighting module in its place. Ensure the connector is fully seated and be careful not to damage the locking tabs. Store the removed dummy plug in the glove box for future use.
Drilling may be required for the ground wire. You must locate a grounding point such as an existing screw or bolt in the vehicle frame. If no suitable existing fastener is available, drill a 3/32" pilot hole. Before drilling, check for hidden items behind or under surfaces to avoid damage or injury.
Drill a 3/32" pilot hole if no existing fastener is available for grounding. The area should be free from rust, dirt, and paint. Use an abrasive pad or paper to remove rust and paint before securing the white ground wire with the ring terminal.
Mount the lighting module on a flat surface either behind the threshold or in the lower driver side trim panel area, in an out-of-the-way location. You can use the provided double-sided tape or zip ties to secure it. Ensure it does not interfere with vehicle operation or cargo.
Route the 4-way flat harness to the center of the rear cargo area. When in use, keep it routed to the center. When not in use, roll it up and store it in a convenient, out-of-the-way location inside the rear cargo area. Secure any loose wires with the provided cable ties. Avoid pinching the harness between floor coverings and the rear hatch.
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 max fuse. Do not exceed the product rating or the tow vehicle lamp load rating, whichever is lower.
The battery connection must be fuse-protected with a 10-amp max fuse. Exceeding this rating can cause loss of warranty, overheating, and potential fire.
Disconnect the negative battery cable and isolate it to prevent contact with metal surfaces, which could damage the vehicle's electrical system or cause electrical shock. Do not lay tools across the positive battery terminal (typically red). Check for hidden items before drilling. Ensure the 10-amp fuse is installed to prevent overheating and fire. Wear appropriate protective equipment when working with tools and electrical connections.
After installation, verify that the harness is functioning by attaching the 4-flat connector to any trailer with functioning lights, or use a 4-flat tester, test light, or multimeter. Reconnect the negative battery cable before testing. Ensure all connections are secure and there is no visible damage.
Perform periodic inspection of all wires and connections to ensure there is no visible damage or loose connections. Check the 4-flat connector and harness routing regularly, especially if the vehicle is used frequently for towing. Ensure cable ties are secure and the harness is not pinched or damaged.
Do not lay tools across the positive battery terminal. Do not ground the negative cable to metal items. Ensure the 10-amp fuse is installed. Check for hidden items before drilling. Do not exceed the product rating or vehicle lamp load rating.
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