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2025 - 2026 Kia Sorento
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Plugs into vehicle tail light assembly to provide a 4-way flat socket
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 Kia Sorento (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 | Kia Sorento | — |
Part 56569 is a T-Connector Harness with Powered Converter Lead designed for SUVs and Vans. It provides a 4-flat trailer connector and converts vehicle taillight signals to trailer lighting signals. The system includes a lighting module (black box), wiring harnesses with color-coded leads (yellow for left turn, green for right turn, red for brake, brown for taillight), a powered converter, fuse holder, ground wire with ring terminal, power wire, cable ties, double-sided tape, and a 4-flat dust cover.
Part 56569 is designed for SUVs and Vans (designated 'S' in Curt's fitment system). The manual does not specify which individual vehicle makes, models, model years, cab styles, bed lengths, or drivetrain configurations are compatible. Contact Curt or consult a fitment database with your vehicle's year, make, model, and body style to confirm compatibility before purchase.
The product is designed for 12-volt negative ground electrical systems only. It will not function on positive ground or 24-volt systems. Verify your vehicle uses a 12-volt negative ground system before installation.
Required tools are: ratchet (1/4" or 3/8"), flat-head screwdriver, 6" extension, fish wire (or equivalent such as a cut-up wire hanger, stiff wire, rope or string), 10mm socket, wire cutters, drill, wire crimpers, 3/32" drill bit, test light, and Phillips screwdriver. The manual notes that proper tools will improve installation quality and reduce time required.
The kit includes: lighting module (black box) with epoxy side for mounting, two harnesses with mating connectors (yellow wire for driver side, green wire for passenger side), powered converter, fuse holder with 10-amp fuse, white ground wire with ring terminal, black power wire (12 GA), ground screw, double-sided tape, cable ties, 4-flat dust cover, and butt connectors. The manual does not specify the exact quantity of cable ties or butt connectors.
Yes. Step 1 requires you to disconnect the negative battery cable before beginning any wiring work. After disconnection, ensure the negative cable is isolated to prevent it from grounding to a metal item, which could damage the vehicle's electrical system. Reconnect the negative battery terminal only after all other installation steps are complete (Step 10).
The installation is rated as 'Difficult'. The difficulty level is based on time and effort involved and may vary depending on installer expertise, vehicle condition, and availability of proper tools and equipment.
1. Locate the two taillight mounting bolt covers on the driver's side. 2. Using a trim panel tool or small flat screwdriver, gently lift each cover to expose the mounting bolts. 3. Using a 10mm socket, remove both bolts. 4. Carefully remove the taillight, taking care not to break or damage mounting tabs or pins. 5. Set the taillight aside. 6. Repeat the entire process for the passenger's side taillight.
Fish wire is a tool used to push or pull an electrical wire through a blind hole (a hole you cannot see through). To use it: 1. Ensure the fish wire is long enough to stick out on the other side of the hole. 2. Insert the fish wire through the blind hole and locate it on the other side. 3. Use tape to secure the harness to the fish wire. 4. Pull the fish wire back up, bringing the harness with it. 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. Fish wire can be made from a cut-up wire hanger, stiff wire, rope, or string depending on what is needed.
1. Starting from the driver's side, use fish wire to pull the harness with the yellow wire down between the vehicle body from underneath. 2. Attach the housing with the yellow wire to the fish wire and pull up to the taillight opening. 3. Connect the mating connector into the taillight and the vehicle's taillight wiring harness. 4. Once connected, remount the taillight into the vehicle's body. 5. Mount the module with the epoxy side down. 6. Repeat this process for the passenger's side using the harness with the green wire.
Mount the lighting module on a flat, clean surface that is out of the path of spray and debris from the rear wheels and road. Attach it using the provided double-sided tape and supplier cable tie (if possible). Failure to mount the box in a protected area will void the warranty and can cause product failure, overheating, and damage.
1. Route the connector with the green wire along the bumper fascia and over to the passenger side. 2. Route the 4-flat connector to the center of the vehicle. 3. Route the black power wire from the vehicle battery as shown on the included CME-PCL-INS sheet. 4. Secure any loose wires with the provided cable ties. 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. Avoid pinch points and hot or rotating components.
Drilling may be required for the ground wire connection. In Step 7, you must locate a grounding point such as an existing screw or bolt in the vehicle frame. If no suitable existing fastener is available, you will need to drill a 3/32" pilot hole. 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; use an abrasive pad or paper to clean it.
A 3/32" drill bit is required if you need to drill a pilot hole for the ground wire connection. This hole is used to secure the white ground wire with the ring terminal using the provided ground screw.
Signal circuits (left and right turn): 3 amps per side. Tail/Running circuits: 6 amps total. The battery connection must be fuse-protected with a 10-amp maximum fuse. Do not exceed the product rating or the tow vehicle lamp load rating, whichever is lower. Exceeding the product rating can cause loss of warranty, overheating, and potential fire.
The power wire is 12 GA (12 gauge) or larger. Route this wire from the vehicle battery to the converter, taking care to avoid pinch points and hot or rotating components.
The harness wires are color-coded as follows: Yellow = Left turn signal, Green = Right turn signal, Red = Brake light, Brown = Taillight. These colors correspond to standard trailer lighting functions and connect to the vehicle's taillight wiring harness.
1. Disconnect the negative battery cable before wiring the power wire. 2. Route the 12 GA black power wire to the positive battery terminal (+), taking care to avoid pinch points and hot or rotating components. 3. Attach the ring terminal of the black power wire to the positive battery terminal. 4. Attach the white ground wire with ring terminal to the vehicle body using the provided screw or by drilling a 3/32" pilot hole if necessary. 5. Install the fuse holder with a 10-amp fuse only after all other steps are complete. 6. Reconnect the negative battery terminal.
Install the 10-amp fuse in the fuse holder only after all other installation steps are complete. This is a critical safety step to protect the battery connection. The fuse must be 10-amp maximum; exceeding this rating can cause loss of warranty, overheating, and potential fire.
1. Do not lay tools across the positive battery terminal (typically marked with red covers or a red '+' symbol); this can cause a short, sparks, and electrical shock. 2. After disconnecting the negative battery cable, ensure it is isolated to prevent grounding to a metal item, which could damage the vehicle's electrical system. 3. Before drilling, check for miscellaneous items hidden behind or under any surface to avoid damage and personal injury. 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. Route the power wire to avoid pinch points and hot or rotating components. 6. Do not exceed the product rating or tow vehicle lamp load rating. 7. Install the fuse only after all other steps are complete.
After installation is complete, verify that the harness is functioning by using one of the following methods: 1. Use a test light to check each circuit. 2. Use a 4-way tester to verify all signals. 3. Use a multimeter to test continuity and voltage. 4. Attach the 4-way flat connector to any trailer with functioning lights and verify that all lights operate correctly. The manual requires testing to confirm proper function before considering the installation complete.
1. Reconnect the negative battery terminal. 2. Install the provided 4-flat dust cover to help prevent corrosion. 3. Reinstall all removed items (such as taillights and trim covers) in the reverse order of disassembly. 4. Test the harness for proper function using a test light, 4-way tester, multimeter, or by connecting a properly wired trailer. 5. Perform periodic inspection of all wires and connections to ensure there is no visible damage or loose connections.
Periodic inspection of all wires and connections should be performed to ensure there is no visible damage or loose connections. The manual does not specify the frequency of inspection or any other maintenance tasks. For detailed maintenance guidance, consult your vehicle owner's manual or contact the vehicle manufacturer.
Part 56569 is designed for SUVs and Vans. Confirm compatibility with your specific vehicle year, make, model, and body style using a fitment database or by contacting Curt before purchase.
Yes, you must disconnect the negative battery cable before beginning installation and reconnect it only after all other steps are complete.
Drilling may be required for the ground wire connection. If no existing fastener is available on the vehicle frame, you will need to drill a 3/32" pilot hole. Always check for hidden items before drilling.
The battery connection must be protected by a 10-amp maximum fuse. Install the fuse only after all other installation steps are complete.
Yellow = Left turn, Green = Right turn, Red = Brake, Brown = Taillight. The power wire is black (12 GA) and the ground wire is white.
If the fish wire or harness gets hung up during routing, try the following: 1. Push the fish wire back down. 2. Wiggle the wire around to loosen it from what it is caught on. 3. Twist the wire to help free it. The manual notes that this is a common occurrence and may require patience and manipulation to resolve.
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