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2025 - 2026 Hyundai Tucson
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Always the correct part
We know our products
Quality Products
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Complete CURT Class 3 2" trailer hitch and 4-flat custom wiring kit engineered for the 2025 - 2026 Hyundai Tucson. Vehicle-specific fit, plug-and-play installation, all hardware and instructions included.
This custom kit fits the following vehicles:
All Hardware and Installation Instructions Included!
Whatever your task at hand -- whether it's launching that boat before daybreak, setting up your camper before the rush or getting a final load to the dump before close -- CURT class 3 trailer hitches offer the strength needed for serious towing. They make it easy to hitch up and Bring It, offering a vehicle-specific fit and the weight capacity to handle a variety of trailers. Custom class 3 hitches are the most common type of receiver hitch for pickup trucks and SUVs. Because of their weight range, they are also found on full-size cars, crossovers and minivans. Each custom-fit class 3 hitch package is made for vehicle-specific mounting. This particular kit fits certain years of the Hyundai Tucson and Kia Sportage (see application info to verify vehicle compatibility). It provides a weight carrying capacity of 3,500 lbs. GTW and 525 lbs. TW. CURT class 3 trailer hitches are typically used to attach and haul utility trailers, boat trailers, campers, snowmobile or ATV haulers and more (NOTE: Never exceed the lowest-rated towing component). Each class 3 hitch has a 2" receiver tube and is tested in accordance with SAE J684 for safety. To ensure that CURT class 3 receiver hitches have what it takes for serious trailering, they are designed using a hands-on approach and are constructed with rugged, high-strength steel and precise welding. We also protect our class 3 hitches in a co-cured finish of liquid A-coat and black powder coat for superior resistance to rust, chipping and UV damage.
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 Hyundai Tucson 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 |
|---|---|---|
| 2025 - 2026 | Hyundai Tucson | — |
The gross trailer weight (GTW) capacity is 3,500 lbs, with a tongue weight (TW) capacity of 525 lbs. Never exceed your vehicle manufacturer's recommended towing capacity.
The manual does not specify vehicle make, model or year compatibility. Contact CURT product support at 877.287.8634 or visit curtmfg.com to confirm fitment for your vehicle.
You will need a ratchet, torque wrench, 14mm socket, 17mm socket, flathead screwdriver, and wire brush. A tools reference guide is available at curtmfg.com/trailer-hitch-installation.
Yes, you must remove the underbody panel. Use a flathead screwdriver to remove four push fasteners, then use a 14mm socket to loosen three nuts. Return the panel and fasteners to the vehicle owner.
All M10 bolts must be tightened to 48 ft-lbs.
The manual notes that lowering the exhaust may be needed to ease installation, but does not state whether it is required. If you encounter interference, lower the exhaust as needed.
Yes. CURT stands behind its products with industry-leading warranties. To get copies of the product warranty, register your purchase, or provide feedback, visit warranty.curtgroup.com/surveys.
The kit includes six M10 x 1.25–35mm hex bolts (Class 10.9) and six 7/16" conical-toothed washers. These are the only fasteners supplied; the hitch bolts to existing vehicle frame weldnuts.
The conical-toothed washers must be oriented correctly under the hex bolts. Refer to the weldnut cleaning diagram on page 2, which shows the proper orientation of the conical-toothed washer between the hex bolt and the hitch side plate.
Raise the hitch into position and loosely secure it with all six M10 bolts and six conical-toothed washers first. Once the hitch is positioned correctly, tighten all M10 bolts to 48 ft-lbs.
To remove debris from weldnuts, spray lubricant or compressed air into the hole. For heavy debris, use a wire brush. Take care not to damage the threads.
Safety glasses must be worn at all times while installing this product. Never exceed your vehicle manufacturer's recommended towing capacity. Before beginning installation, read all instructions thoroughly.
Periodic inspection of the trailer hitch should be performed to ensure all mounting hardware remains tight and structural components are secure. This helps prevent damage to the product or vehicle.
The installation is rated as Easy. However, installation difficulty levels are based on time and effort involved and may vary depending on the installer's level of expertise, the condition of the vehicle, and whether proper tools and equipment are available.
Curt part 56554 is a wiring converter for SUVs and vans that integrates trailer lighting into your vehicle's existing electrical system. It connects to your vehicle's taillight and turn signal circuits and provides a 4-flat connector for trailer hookup. The converter includes a powered module that must be mounted in a protected location on the vehicle.
Curt 56554 is designed for SUVs and vans. Your vehicle must have a 12-volt negative ground electrical system. The manual does not list specific vehicle models or years. Contact Curt or a fitment database to confirm compatibility with your specific make, model and year before purchasing.
No. Curt 56554 is designed only for 12-volt negative ground systems. Do not attempt to install it on a positive ground vehicle, as this will cause improper operation and potential electrical damage.
You will need: ratchet, ratchet extension, 10mm socket, Phillips screwdriver, flat head screwdriver, trim panel tool, wire cutter, wire stripper, fish wire, and crimp tool. Proper tools will improve installation quality and reduce installation time.
The manual confirms the product includes: a custom wiring harness with brown, red, yellow, and green wires; a converter module; cable ties; 2-sided tape; a ring terminal; a screw for grounding; a 4-flat dust cover; and a fuse holder with 10-amp fuse. A separate 'Powered Converter Lead Instruction Sheet' is provided for battery connection details.
Yes. Step 1 requires you to locate the vehicle's battery in the engine compartment on the driver side and disconnect the negative battery terminal. Fasten this wire down and away from the battery while completing the installation. Do not reconnect until Step 13, after all other wiring is complete.
The installation is rated as 'Difficult'. Installation difficulty is based on time and effort involved and may vary depending on installer expertise, vehicle condition, and availability of proper tools and equipment.
Remove the two 10mm bolts holding the driver side taillight in place (Step 2). Then pull the taillight outward from the side of the vehicle (Step 3). Separate the connector from the taillight housing, taking care not to damage the locking tabs. Set the taillight aside. Repeat these steps on the passenger side.
Fish wire is a tool used to push or pull electrical wire through blind holes in the vehicle body. Insert the fish wire 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 gets hung up, you may need to push back down, wiggle it, or twist it to loosen it. Fish wire can be a cut-up wire hanger, stiff wire, rope or string depending on what is needed.
In Step 4, fishwire down between the vehicle body to underneath the vehicle starting from the driver side. Attach the housing with the brown wire to the fish wire and pull up to the taillight opening. Before fishwiring, ensure the connector contains both brown and red wires. Locate the vehicle taillight wiring connectors (similar to those on the custom harness). Connect the custom harness end with the brown wire, attaching the connectors between the taillight harness and the factory connectors that were separated in Step 3. Reinstall the taillight into the mount.
In Step 5, from underneath the vehicle, locate the turn function connector housings in the rear bumper cover on each side. Disconnect the black connector housing on both the right and left sides of the bumper cover. Note that connectors can be difficult to access, and removal of other components may be required for ease of installation.
In Step 6, on the driver side, locate the vehicle turn signal wiring connector. The connectors will be similar to those on the custom harness. Locate the custom harness end with the yellow wire and attach the connectors between the custom harness and the factory connectors that were separated in Step 5.
In Step 7, route the green wire to the bumper and down to the passenger side. Secure any loose wires with the provided cable ties.
In Step 8, on the passenger side, locate the vehicle turn signal wiring connector. The connectors will be similar to those on the custom harness. Locate the custom harness end with the green wire and attach the connectors between the custom harness and the factory connectors that were separated in Step 5.
In Step 9, locate a suitable grounding point near the connector, such as an existing screw with nut in the vehicle frame, or drill a 3/32" pilot hole for the provided screw. The area should be free of rust, dirt and paint. Secure the white ground wire using the ring terminal and provided screw. Before drilling, check for miscellaneous items that may be hidden behind or under any surface to avoid damage and personal injury.
In Step 10, locate a flat clean surface that is out of the path of spray and debris from the rear wheels and road. Always mount the module with the epoxy side down to prevent excessive water buildup and debris collection. Use the supplied 2-sided tape and/or zip ties to secure it to the vehicle. Failure to mount in a protected area can cause loss of warranty, product failure, overheating and potential damage.
In Step 12, route the 4-flat to the center of the vehicle. Secure any loose wires with the provided cable ties.
In Step 13, reconnect the negative battery terminal. Install the provided 4-flat dust cover to help prevent corrosion. Reinstall all removed items in the reverse order of disassembly to complete the installation. Once the custom harness is installed, verify that it is functioning by attaching the 4-flat to any trailer with functioning lights or use a 4-flat tester, test light, or multimeter.
The harness includes four wires: Brown (taillight/running lights), Red (brake), Yellow (left turn signal), and Green (right turn signal).
Signal circuits (left and right turn): 3.0 amps per side. Tail/running circuits: 6.0 amps total. Do not exceed the product rating or the tow vehicle lamp load rating, whichever is lower.
Use 12 GA (12 gauge) wire or larger to route from the vehicle battery to the converter. Route the 12 GA wire to the vehicle battery location, taking care to avoid any pinch points and hot or rotating components.
The battery connection must be fuse-protected with a 10-amp maximum fuse. Install the fuse after all other steps are complete. Exceeding the product rating can cause loss of warranty, overheating and potential fire.
Route the black power wire to the positive battery (+) terminal using 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 power wire from sharp edges. Secure the power wire to the vehicle chassis using the provided cable ties. The battery connection must be fuse-protected with a 10-amp maximum fuse, installed after all other steps are complete.
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 leading to sparks and/or electrical shocks. When disconnecting the negative battery terminal in Step 1, fasten this wire down and away from the battery to prevent accidental grounding. Grounding of the negative cable to a metal item could cause damage to the vehicle's electrical system. Disconnect the negative battery cable before wiring the power wire.
Before drilling to create a 3/32" pilot hole for the ground wire screw, 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 through sheet metal or vehicle body panels.
Once the custom harness is installed, verify that it is functioning by attaching the 4-flat connector to any trailer with functioning lights, or use one of the following: 4-flat tester, test light, or multimeter.
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.
Curt 56554 is designed for SUVs and vans with 12-volt negative ground electrical systems. Confirm your specific vehicle model and year compatibility with Curt or a fitment database before purchasing.
Yes, you must disconnect the negative battery terminal before beginning installation and reconnect it only after all wiring is complete.
Drilling may be required. You may need to drill a 3/32" pilot hole for the ground wire screw if a suitable existing screw with nut is not available in the vehicle frame. Before drilling, check for hidden items behind or under surfaces to avoid damage.
The battery connection must be fuse-protected with a 10-amp maximum fuse. Install the fuse after all other steps are complete.
Use 12 GA (12 gauge) wire or larger to route from the vehicle battery to the converter.
Do not lay tools across the positive battery terminal, as this can cause a ground short leading to sparks and electrical shocks. The battery connection must be fuse-protected with a 10-amp maximum fuse to prevent overheating and potential fire.
If the fish wire gets hung up on something, you may need to push back down, wiggle it around, or twist the wire to loosen it from what it is caught on. Ensure the fish wire is long enough to stick out on the other side before pulling.
The turn function connector housings in the rear bumper cover can be difficult to access. Removal of other components may be required for ease of installation. Assess what components are blocking access and remove them as needed to reach the black connector housings on both sides of the bumper cover.
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