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CURT
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Select your vehicle to confirm this part fits.
2022 - 2026 Volkswagen Golf R
Confirmed to Fit
2022 - 2026 Volkswagen GTI
Confirmed to Fit




Always the correct part
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Always the correct part
We know our products
Quality Products
Free Shipping!
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
Finish: Blank
Electrical System Type: PWM-STT
Output Type: 4-Way Flat
Tail Light Circuits: 7.5 Amps
Turn and Brake Circuits: 5.0 Amps
Installation Difficulty: Advanced
Installation Time Exact (Minutes): 60
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 Volkswagen Golf R and GTI (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
2 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2022 - 2026 | Volkswagen Golf R | — |
| 2022 - 2026 | Volkswagen GTI | — |
Yes, the CURT Custom Wiring Harness, 4-Way Flat Output, Select Volkswagen Golf R, GTI (Part #BKDK56527) is designed to fit the 2022-2026 Volkswagen Golf R.
The CURT Custom Wiring Harness, 4-Way Flat Output, Select Volkswagen Golf R, GTI (Part #BKDK56527) fits the following vehicles: 2022-2026 Volkswagen Golf R; 2022-2026 Volkswagen GTI. Always verify your specific year, make, and model before ordering.
The CURT Custom Wiring Harness, 4-Way Flat Output, Select Volkswagen Golf R, GTI (Part #BKDK56527) fits 2022-2026 Volkswagen Golf R models. The 2026 model year is the last year covered by this part number. For newer models, check for an updated version.
The CURT Custom Wiring Harness, 4-Way Flat Output, Select Volkswagen Golf R, GTI (Part #BKDK56527) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
The Curt 56527 is designed for passenger cars with 12-volt negative ground electrical systems. The manual does not list specific vehicle models or years. Verify your vehicle has a 12-volt negative ground system before purchasing. Contact Curt Manufacturing or consult your vehicle owner's manual to confirm compatibility with your specific make and model.
The Curt 56527 is a trailer wiring converter that converts your vehicle's taillight signals to a 4-flat trailer connector. It connects to your vehicle's taillights (green wire for right turn, yellow wire for left turn, red wire for brake, brown wire for taillight) and routes them through a converter box mounted on the vehicle frame, with power supplied from the vehicle battery through a 12 GA wire and 15-amp fuse.
Required tools are: ratchet, crimping tool, socket with T-25 Torx bit, cutting tool, small flathead screwdriver, panel trim removal tool, wire cutter, and fishwire (which can be made from a cut-up wire hanger, stiff wire, rope or string). You will also need an abrasive pad or paper to remove rust and paint from the grounding point.
Yes. Step 1 requires you to locate the vehicle battery on the driver side under the hood and disconnect the negative battery terminal. Fasten this wire down and away from the battery during installation. The negative battery cable must remain disconnected until you are ready to wire the power lead, and you must reconnect it only after all other steps are complete and before installing the 15-amp fuse.
Open the trunk and locate the taillight trim covers. Use a small flathead screwdriver to remove the trim covers, exposing the taillight housing. Use a T-25 Torx bit to remove the two screw fasteners. Remove the taillight by pulling straight back from the vehicle. Disconnect the connectors carefully, taking care not to damage the locking tabs. Repeat this process on both the driver and passenger sides.
Fishwire is a technique to push or pull electrical wire through a blind hole or confined space. Make sure the fishwire is long enough to stick out on the other side. Insert it through the blind hole and locate it on the other side. Use tape to secure the harness to the fishwire and pull back up. If the fishwire gets hung up, you may need to push back down, wiggle it around, or twist the wire to loosen it. Fishwire can be made from a cut-up wire hanger, stiff wire, rope or string.
Starting at the passenger side taillight, route the fishwire down between the vehicle body and bumper. Locate the green wire (right turn signal) and attach it to the fishwire, then pull it up to the taillight and install. Route the yellow wire (left turn signal) to the driver side along the rear bumper. Repeat the fishwire process on the driver side with the yellow wire. Secure any loose wires with provided cable ties, but leave them loose enough for later adjustment.
Locate a flat spot on the passenger side of the vehicle between the vehicle body and the bumper. Adhere the black converter box using the provided double-sided tape or cable ties.
Locate a grounding point such as an existing screw or bolt in the vehicle frame. If no suitable point exists, drill a 3/32" pilot hole. The area must be free from rust, dirt, and paint—use an abrasive pad or paper to clean it. 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.
Drilling may be required for the ground wire connection. If no existing screw or bolt is available on the vehicle frame to attach the white ground wire ring terminal, you must 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 must be cleaned of rust, dirt, and paint using an abrasive pad or paper.
The power wire must be 12 GA (12 gauge) or larger. The battery connection must be protected by a 15-amp maximum fuse. The fuse should be installed after all other installation steps are complete. Exceeding the 15-amp rating can cause loss of warranty, overheating and potential fire.
The converter uses the following wire colors: green for right turn signal, red for brake, yellow for left turn signal, and brown for taillight. The white wire is the ground wire. The black wire connects to the positive battery terminal. These colors are routed from the taillights through the converter box to the 4-flat trailer connector.
Route a 12 GA wire or larger from the vehicle battery to the converter, 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. Connect the black power wire to the positive battery terminal using a ring terminal. Secure the power wire to the vehicle chassis using the provided cable ties. Install the 15-amp fuse in the fuse holder after all other steps are complete. The negative battery cable must be disconnected before wiring the power wire and reconnected only after the fuse is installed.
Signal circuits (turn signals) 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.
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. Do not exceed the product rating or tow vehicle lamp load rating. Before drilling, check for miscellaneous items that may be hidden behind or under any surface to avoid damage and personal injury. Route the 12 GA power wire to the battery avoiding 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 it from sharp edges. Disconnect the negative battery cable before wiring the power wire.
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. Reinstall all items removed during installation. If the negative battery terminal was disconnected at the beginning, reconnect it. 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. When not in use, roll up and store the 4-flat connector in a convenient, out-of-the-way location. Secure any loose wires with provided cable ties. Install the provided 4-flat dust cover to help prevent corrosion.
The 4-flat connector routes from the center of the vehicle (next to the receiver hitch) out of the hatch to the trailer. When in use, route the 4-flat with the center of the vehicle and out of the hatch, staying clear of the hatch's latching mechanism. When not in use, roll up and store in a convenient, out-of-the-way location. Secure any loose wires with provided cable ties.
If using the Curt 56527 converter as a powered module for a two-wire system, the red brake wire must be grounded. This is a specific configuration noted in the Powered Converter Lead Instruction Sheet. Consult the manual or contact Curt Manufacturing for detailed instructions on two-wire system setup.
The Curt 56527 is designed for passenger cars with 12-volt negative ground electrical systems. Verify your vehicle meets these requirements before purchasing. Contact Curt Manufacturing or your vehicle manufacturer to confirm compatibility with your specific make and model.
The battery connection must be protected by a 15-amp maximum fuse. Install the fuse after all other installation steps are complete. Exceeding 15 amps can cause loss of warranty, overheating and potential fire.
The power wire must be 12 GA (12 gauge) or larger. Route it from the vehicle battery to the converter, avoiding pinch points and hot or rotating components. Protect it with a grommet or silicone when passing through sheet metal.
Do not lay tools across the positive battery terminal (risk of short and sparks). Do not exceed the 15-amp fuse rating. Before drilling, check for hidden items to avoid damage and injury. Disconnect the negative battery cable before wiring the power lead. Route the power wire away from pinch points and hot or rotating components.
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