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Complete CURT Class 1 1-1/4" trailer hitch and 4-flat custom wiring kit engineered for the 2024 - 2026 Hyundai Sonata Excluding N Line. 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!
However you define adventure -- whether it's climbing onto the back of a mountain bike, hunting from the top of a tree stand or camping with the family a long way from nowhere -- CURT class 1 hitches provide a light-duty towing receiver to help you Bring It. Each is made to fit a specific vehicle, providing easier installation, a better fit and optimal towing capacity. Custom class 1 trailer hitches are available for a variety of smaller vehicle types, including the compact car, crossover, minivan and small SUV. This particular class 1 hitch is designed to be a custom hitch for certain years of the Hyundai Sonata (to verify vehicle compatibility, see the CURT application guide at curtmfg.com). Tested in accordance with SAE J684, it offers a weight carrying capacity of 2,000 lbs. GTW and 200 lbs. TW. It is equipped with 1-1/4" receiver tube opening to accept a ball mount shank or other hitch mount. This class 1 hitch also comes with all necessary mounting hardware. With its lightweight design and smaller receiver tube size, a class 1 hitch is especially useful for adding cargo space with a hitch-mounted bike rack or cargo carrier. They can also typically be used to tow small trailers such as a utility trailer, kayak trailer or teardrop camper (never exceed the lowest weight capacity of any towing component; i.e. the vehicle, hitch, trailer, etc). Though CURT class 1 trailer hitches are only intended for light-duty towing, we apply the same principles of quality as we do to the rest of our rear mount hitches. Each class 1 hitch is made with hands-on engineering, high-strength steel and precise welding. We use a co-cured finish of liquid A-coat, inside and out, and durable black powder coat to provide a lasting defense against rust, chips and UV rays.
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 Sonata (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 888-634-94941 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2024 - 2026 | Hyundai Sonata | Excluding N Line |
The manual does not specify the vehicle make, model, or year. Contact CURT Product Support at 877.287.8634 or visit curtmfg.com for fitment confirmation before purchase.
The CURT 11673 has a gross trailer weight (GTW) capacity of 2,000 lbs and a tongue weight (TW) capacity of 200 lbs. Never exceed your vehicle manufacturer's recommended towing capacity.
You will need: ratchet, 3/4" socket, 6" socket extension, 10mm socket, 12mm socket, torque wrench, four 1/2" fishwire tools (included), and flathead screwdriver. A 5/8" open-end wrench and pry bar are optional for exhaust hanger removal if you do not have exhaust hanger removal pliers.
The manual rates installation difficulty as 'Easy' based on time and effort involved, but difficulty may vary depending on installer expertise, vehicle condition, and proper tools. The manual does not state whether professional installation is required or recommended.
Three components must be removed: (1) driver-side trim panel (secured by two 10mm flange nuts and three pop rivets); (2) exhaust hangers; and (3) passenger-side heat shield (secured by three 10mm flange nuts). The trim panel and heat shield hardware should be returned to the owner. The exhaust must be supported before removing its flange nuts.
Yes. You must support the exhaust before removing the two 12mm flange nuts on the passenger side (Step 2). After hitch installation, the exhaust is raised back into position and the flange nuts and rubber isolators are reinstalled (Step 6).
The fishwire tool (four included) is used to guide hardware through the frame rail without losing bolts or spacers inside the rail. Insert the coiled end of the fishwire through the hitch mounting hole and out the access hole. Pass the coiled end through the square-hole spacer and thread the carriage bolt into the coil. Kink the wire to keep the spacer separate from the bolt. Pull the fishwire, spacer, and bolt through the frame and out the mounting hole. Use the fishwire to guide the hitch during mounting. Remove the fishwire before final tightening.
If exhaust hanger removal pliers are not available, use a 5/8" open-end wrench and pry bar. Slide the wrench up to the rubber isolator, cradling the hanger rod. Place the flat edge of the pry bar between the wrench and the hanger stop or hanger rod. Rotate the pry bar toward the wrench to remove the rubber isolator. Using lubricant or soapy water on the hanger rod and rubber isolator helps removal.
The kit includes: (1) four square-hole spacers (1/4" × 1" × 3"), (2) four carriage bolts (1/2"-13 × 1-1/2", grade 8), (3) four flange nuts (1/2"-13), and (4) four fishwire tools (1/2"). Additional conical-toothed washers and hex nuts are required for final assembly but are not listed in the parts list; confirm these are included or obtain separately.
All 1/2" hardware (carriage bolts) must be torqued to 110 ft-lbs using a torque wrench (Step 6). This is performed after the conical-toothed washers and hex nuts are installed and the hitch is raised into final position.
The tooth side of the washer must face toward the trailer hitch. Install the conical-toothed washers and hex nuts onto the carriage bolts before final torquing.
1. Remove driver-side trim panel (10mm flange nuts and pop rivets). 2. Remove exhaust hangers and lower exhaust (support it first). 3. Remove passenger-side heat shield (10mm flange nuts). 4. On driver side, use fishwire to insert square-hole spacers and carriage bolts through the frame access hole; repeat on passenger side. 5. Raise hitch into position, align holes on both frame rails, remove fishwire, install conical-toothed washers (tooth side toward hitch) and hex nuts. 6. Torque all 1/2" hardware to 110 ft-lbs. 7. Raise exhaust back into position and reinstall flange nuts and rubber isolators.
Safety glasses must be worn at all times during installation. Support the exhaust before removing its flange nuts to prevent it from falling. Use proper tools and follow all torque specifications to prevent damage to the product or vehicle. Never exceed your vehicle manufacturer's recommended towing capacity when using the installed hitch.
Periodic inspection of the trailer hitch should be performed to ensure all mounting hardware remains tight and structural components are secure. The manual does not specify the inspection interval; contact CURT Product Support at 877.287.8634 for recommended maintenance schedules.
Visit www.curtmfg.com for a full-color copy of the instruction manual, helpful videos, guides, and additional resources. You can also contact CURT Product Support at 877.287.8634 for assistance.
Visit warranty.curtgroup.com/surveys to register your purchase, get copies of product warranties, or provide feedback. CURT stands behind its products with industry-leading warranties.
The manual does not mention drilling. The hitch uses existing frame rail holes and access holes for mounting. Confirm with CURT Product Support at 877.287.8634 if drilling is required for your specific vehicle.
The manual does not state whether factory fasteners are reused. The trim panel and heat shield hardware removed during installation are returned to the owner. The exhaust hanger rubber isolators are reinstalled. Contact CURT Product Support at 877.287.8634 for clarification on reuse of factory fasteners.
The Curt 56529 is a powered converter system that integrates trailer lighting into your SUV or van's factory taillight wiring. It converts your vehicle's taillight signals (left turn, right turn, brake, and tail lights) to a 4-flat trailer connector. The system includes a converter box, wiring harness with color-coded leads (green for right turn, red for brake, yellow for left turn, brown for tail lights), and a 4-flat dust cover.
The Curt 56529 is designed for SUVs and Vans (designated as 'S' in the manual). The manual does not specify individual vehicle makes, models, or years. Consult the product fitment database or contact Curt Manufacturing to confirm compatibility with your specific vehicle.
Yes. The converter system is designed exclusively for 12-volt negative ground systems. If your vehicle uses a different electrical system, this product is not compatible.
The following tools are required: panel trim removal tool, crimping tool, wire cutter, cutting tool, wire stripper, and fishwire. Proper tools will improve installation quality and reduce installation time.
The kit includes: a black converter box, wiring harness with color-coded leads (green, red, yellow, brown), white ground wire with ring terminal, black power wire, a ground screw, double-sided tape for mounting the converter box, cable ties for securing wires, a 4-flat dust cover, and a fuse holder with 10-amp fuse (to be installed after all other steps are complete).
Yes. You must disconnect the negative battery terminal before beginning installation. Be sure to fasten this wire down and away from the battery when completing the installation process. The battery must be reconnected only after all other steps are complete and before the fuse is installed.
You must remove the cargo netting and floor board to expose the spare tire. Then locate the two threaded cargo net hooks on the threshold at the rear of the trunk and remove them. Pull the threshold at the bottom towards the front of the vehicle and lift up to release it. Repeat on the other side. Once both sides are loose, lift the threshold straight up and set it aside.
1. Remove the removable access panel in the trunk felt liner on the driver side to reveal the taillight connectors. Repeat on the passenger side. 2. Locate the vehicle's taillight wiring connectors. 3. Separate the connectors from the taillight housing, taking care not to damage the locking tabs. 4. Insert the custom wiring end with the yellow wire between the separated connectors on the driver side. Make sure the connectors are fully inserted with locking tabs in place. 5. Route the harness down between the driver side of the vehicle and the felt liner. Route the green wire along the rear of the vehicle to the passenger side, sliding it between the felt liner. 6. Install the green wire between the separated passenger-side taillight connectors. 7. Secure any loose wires with the provided cable ties.
Pull back the felt liner on the driver side and adhere the black converter box to the vehicle using the provided double-sided tape. You may need to remove the threaded cargo hook to make room. The converter box should be mounted in a location where it is secure and protected from moisture and damage.
You may need to drill a hole depending on available grounding points. First, locate an existing screw or bolt in the vehicle frame to use as a grounding point. If no suitable existing fastener is available, 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 its ring terminal to 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.
If you need to drill a grounding point, the pilot hole size is 3/32". The area must be free from rust, dirt, and paint before drilling.
The color-coded wires on the converter system represent the following trailer lighting functions: Green = Right turn signal; Red = Brake light; Yellow = Left turn signal; Brown = Tail/Running lights. These colors match the standard 4-flat trailer connector configuration.
Route the 12-gauge black power wire from the vehicle battery to the converter, taking care to avoid any 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. The power wire must be connected to the positive battery terminal using a ring terminal. A fuse holder with a 10-amp fuse must be installed in the power circuit, but the fuse should be installed only after all other steps are complete.
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. The fuse should be installed after all other installation steps are complete.
The converter system has the following electrical ratings: 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.
Follow these safety precautions: (1) Do not lay tools across the positive battery terminal (typically marked with red covers or a red '+' symbol), as this can cause a ground short resulting in sparks and/or electrical shocks. (2) Before drilling, check for miscellaneous items that may be hidden behind or under any surface to avoid damage and personal injury. (3) When routing the power wire, avoid pinch points and hot or rotating components. (4) 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. (5) Do not exceed the product rating or tow vehicle lamp load rating, whichever is lower.
When in use, route the 4-flat connector through the center of the vehicle and out of the hatch, staying clear of the hatch's latching mechanism. When not in use, roll up the connector and store it in a convenient, out-of-the-way location. 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. This test should be performed before the installation is considered complete.
After installation is complete and the system has been tested: (1) Reinstall all items removed during installation, including the trunk threshold, cargo netting, and floor board. (2) If the negative battery terminal was disconnected at the beginning, reconnect it. (3) Install the provided 4-flat dust cover to help prevent corrosion. (4) Secure any loose wires with the provided cable ties.
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 Curt 56529 is designed for SUVs and Vans. Confirm your specific vehicle make, model, and year using the Curt fitment database or contact Curt Manufacturing.
You need: panel trim removal tool, crimping tool, wire cutter, cutting tool, wire stripper, and fishwire.
Yes, you must disconnect the negative battery terminal before beginning installation and reconnect it only after all other steps are complete.
Drilling may be required only if no existing screw or bolt is available for the ground connection. If needed, drill a 3/32" pilot hole in a rust-free, clean area of the vehicle frame.
The battery connection must use a 10-amp maximum fuse. Exceeding this rating can cause loss of warranty, overheating, and potential fire.
Use 12-gauge wire or larger for the power connection from the battery to the converter.
Verify the following: (1) Confirm that the 12-volt power wire is properly connected to the positive battery terminal using the ring terminal. (2) Check that the negative battery terminal is reconnected. (3) Verify that the 10-amp fuse is installed in the fuse holder. (4) Ensure that the white ground wire is securely attached to a clean, rust-free grounding point on the vehicle frame. (5) Check that all taillight connector connections are fully inserted with locking tabs in place. (6) Inspect all wires for visible damage or loose connections. (7) Test the system using a test light, 4-flat tester, or functioning trailer.
Sparks or electrical shocks can occur if tools are laid across the positive battery terminal (typically marked with red covers or a red '+' symbol), causing a ground short. To prevent this, keep tools away from the positive battery terminal during installation. Always disconnect the negative battery terminal before beginning work, and do not reconnect it until all other installation steps are complete.
Overheating and fire risk can result from exceeding the product rating or using a fuse larger than 10 amps. 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. Additionally, do not exceed the product's electrical ratings: 3.0 amps per side for signal circuits and 6.0 amps total for tail/running circuits. Do not exceed the tow vehicle lamp load rating either.
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