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2020 - 2026 Buick Encore GX
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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
Electrical System Type: 3W
Output Type: 4-Way Flat
Tail Light Circuits: 7.5 Amps
Turn and Brake Circuits: 5.0 Amps
Installation Time Exact (Minutes): 0
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 Buick Encore (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 |
|---|---|---|
| 2020 - 2026 | Buick Encore GX | — |
The CURT 56456 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Buick Encore (Part #BKDK56456) fits 2020-2026 Buick Encore GX 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 56456 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Buick Encore (Part #BKDK56456) is designed to fit the 2020-2026 Buick Encore GX.
The CURT 56456 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Buick Encore (Part #BKDK56456) fits the following vehicles: 2020-2026 Buick Encore GX. Always verify your specific year, make, and model before ordering.
The CURT 56456 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Buick Encore (Part #BKDK56456) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Curt part 56456 is a wiring converter system designed for SUVs and vans. It converts the vehicle's taillight signals (left turn, right turn, brake, and tail lights) into a 4-flat trailer connector format. The system includes a powered converter box that mounts inside the vehicle and routes wiring to the rear, allowing you to connect a trailer with standard 4-flat connectors.
Curt 56456 is designed for SUVs and vans. The system requires a 12-volt negative ground electrical system. For specific vehicle compatibility, consult your vehicle's owner's manual or contact the vehicle manufacturer, as the manual does not list specific makes, models or years.
No. The converter system is designed only for 12-volt negative ground systems. It cannot be used on 24-volt systems or positive ground systems.
You will need: ratchet, 10mm socket, socket extension, T-45 Torx bit, panel trim removal tool, wire crimper, wire stripper, cutting tool, flathead screwdriver, and electrical tape. The manual notes that proper tools will improve installation quality and reduce time required.
The kit includes: a custom wiring harness with yellow and green wires, a black converter box, double-sided tape for mounting the converter, cable ties for securing wires, a 4-flat dust cover, a white ground wire with ring terminal, a fuse holder with 10-amp fuse, and a screw for grounding the white wire to the vehicle body.
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. The battery must remain disconnected until after all wiring is complete and before the fuse is installed.
Before beginning, read all instructions thoroughly. Open the vehicle tailgate and remove all trunk floor coverings. Disconnect the negative battery terminal and fasten it down and away from the battery. The manual notes that proper tools and equipment will improve installation quality. Installation difficulty is rated as Easy.
The black converter box mounts on a flat spot on the driver side of the vehicle using the provided double-sided tape. The exact location is not specified in the manual, but it should be positioned to allow the power wire to route to the battery and the signal wires to reach the taillight connectors.
The wiring harness connects at two locations: (1) Driver side: Use a panel trim removal tool to pull back the side trim panel. Locate the taillight wiring harness connectors. Separate the connectors from the taillight housing carefully without damaging the locking tabs. Insert the custom wiring harness end with the yellow wire between the separated connectors. Ensure connectors are fully inserted with locking tabs in place. (2) Passenger side: Repeat the process with the green wire. Run the green wire along the back of the vehicle from the driver side to the passenger side.
The wiring harness uses the following color code: Yellow = Left turn signal, Green = Right turn signal, Red = Brake signal, Brown = Tail/running lights. The yellow wire connects at the driver side taillight, and the green wire connects at the passenger side taillight. The black power wire connects to the vehicle battery positive terminal, and the white ground wire connects to the vehicle body.
When not in use, roll up the 4-flat connector and store it in a convenient, out-of-the-way location. When in use, route the 4-flat to the center of the vehicle. Secure any loose wires with the provided cable ties.
You may need to drill a 3/32" hole to attach the white ground wire ring terminal to the vehicle body, but only if a suitable existing hole or mounting point is not available. Use the screw provided with the kit. Before drilling, check for miscellaneous items that may be behind or under the surface to avoid personal injury or property damage.
Yes. You must remove the rear side panels and storage trays to access the taillight connectors and route the wiring. Specifically: (1) Remove two cargo tie-downs securing the rear side panels using a 10mm socket. (2) Remove the scuff panel using a panel trim removal tool by pulling straight up. (3) Remove two fasteners securing the storage trays using a T-45 Torx bit and extension. (4) Remove the storage trays. (5) Pull back the side trim panel using a panel trim removal tool to access the taillight connectors. All removed items must be reinstalled after installation is complete.
Signal circuits (left turn and right turn) are rated at 5.0 amps per side. Tail and running light circuits are rated at 7.5 amps total. 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 battery connection must be fuse-protected with a 10-amp maximum fuse. A fuse holder with 10-amp fuse is provided in the kit. Install the fuse after all other installation steps are complete. Exceeding the 10-amp rating can cause loss of warranty, overheating, and potential fire.
The power wire must be 12 GA (gauge) or larger. Route the 12 GA wire from the vehicle battery location, taking care to avoid 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 wire from sharp edges.
Route the black 12 GA power wire from the converter to the vehicle battery location, avoiding pinch points and hot or rotating components. Connect the ring terminal of the black power wire to the positive (+) battery terminal. The connection must be fuse-protected with a 10-amp maximum fuse. Install the fuse after all other steps are complete. When passing the power wire through sheet metal, use an existing grommet, add a grommet, or use silicone to protect from sharp edges. Secure the power wire to the vehicle chassis using the provided cable ties.
Attach the ring terminal of the white ground wire to the vehicle body using the screw provided. If necessary, drill a 3/32" hole for the screw. The ground wire must be securely connected to complete the electrical circuit. Before drilling, check for miscellaneous items behind or under the surface to avoid personal injury or property damage.
Do not exceed the product rating or the tow vehicle lamp load rating, whichever is lower. The specific product rating is not stated in the manual. Consult your vehicle owner's manual or contact the vehicle manufacturer for the tow vehicle lamp load rating. Exceeding the rating can cause loss of warranty, overheating, and potential fire.
Route the 12 GA power wire to avoid 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 wire from sharp edges. Before drilling any holes, check for miscellaneous items that may be behind or under the surface to avoid personal injury or property damage. Disconnect the negative battery cable before wiring the power wire. Secure the power wire to the vehicle chassis using the provided cable ties.
After wiring the power wire 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. Reconnect the negative battery terminal after all wiring is complete and the fuse is installed. Install the provided 4-flat dust cover to help prevent corrosion.
Periodic inspection of all wires and connections should be performed to ensure there is no visible damage or loose connections. Install the provided 4-flat dust cover to help prevent corrosion when the connector is not in use.
Curt 56456 is designed for SUVs and vans with 12-volt negative ground electrical systems. For specific vehicle compatibility, check your vehicle owner's manual or contact the vehicle manufacturer.
Yes. Disconnect the negative battery terminal before installation and keep it disconnected until after all wiring is complete and the fuse is installed.
You may need to drill a 3/32" hole to mount the ground wire, but only if a suitable existing mounting point is not available. You must remove rear side panels and storage trays to access the taillight connectors.
10-amp maximum fuse. A fuse holder with 10-amp fuse is provided. Install the fuse after all other steps are complete.
12 GA (gauge) or larger. Route the power wire to avoid pinch points and hot or rotating components. Protect the wire from sharp edges when passing through sheet metal.
When separating the taillight connectors, take care not to damage the locking tabs. Use a panel trim removal tool to gently pull back the side trim panel and access the connectors. If the connectors are stuck, apply gentle, steady pressure rather than force. Do not pull on the wires themselves, as this can damage the locking tabs or connectors.
Verify the following: (1) The negative battery terminal is reconnected. (2) The 10-amp fuse is installed in the fuse holder. (3) The yellow wire is fully inserted in the driver side taillight connector with locking tabs in place. (4) The green wire is fully inserted in the passenger side taillight connector with locking tabs in place. (5) The black power wire is connected to the positive (+) battery terminal with a ring terminal. (6) The white ground wire is securely attached to the vehicle body. (7) Test with a test light, 4-flat tester, or functioning trailer to verify operation.
The converter box is mounted using the provided double-sided tape on a flat spot on the driver side of the vehicle. If the tape is not holding, ensure the mounting surface is clean and dry before applying the tape. Press firmly on the converter box for several seconds to ensure good adhesion. If the tape fails, the converter may need to be remounted on a different flat surface or secured with an alternative method not specified in this manual.
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