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Original price was $147.95. Current price is $117.99.You save $29.96 (20%)
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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: 2W
Output Type: 4-Way Flat
Tail Light Circuits: 6.0 Amps
Turn and Brake Circuits: 3.0 Amps
Installation Difficulty: Professional
Installation Time Exact (Minutes): 45
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 Regal TourX (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 888-634-9494Rediscover "Us" Time | Tested. Proven. Safe. Towing Products
2 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2018 - 2020 | Buick Regal Sportback | Installation Time: 30-60 minutes |
| 2018 - 2020 | Buick Regal TourX | Installation Time: 30-60 minutes |
Yes, the CURT Custom Wiring Harness, 4-Way Flat Output, Select Buick Regal TourX Trailer Connector Kit (Part #BKDK56389) is designed to fit the 2018-2020 Buick Regal Sportback.
The CURT Custom Wiring Harness, 4-Way Flat Output, Select Buick Regal TourX Trailer Connector Kit (Part #BKDK56389) fits the following vehicles: 2018-2020 Buick Regal Sportback; 2018-2020 Buick Regal TourX. Always verify your specific year, make, and model before ordering.
The CURT Custom Wiring Harness, 4-Way Flat Output, Select Buick Regal TourX Trailer Connector Kit (Part #BKDK56389) fits 2018-2020 Buick Regal Sportback models. The 2020 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 Buick Regal TourX Trailer Connector Kit (Part #BKDK56389) Typical installation time is 30-60 minutes. Basic hand tools are typically all you need.
Yes, the Curt 56389 is designed for the Buick Regal TourX passenger car. The harness connects behind the driver and passenger side taillight housings, outside the trunk.
The harness is rated for 3.0 amps per side on signal circuits and 6.0 amps total on tail/running circuits. Do not exceed these ratings or the tow vehicle lamp load rating, whichever is lower. Exceeding the rating can cause loss of warranty, overheating and potential fire.
The battery connection must be fuse-protected with a 10-amp maximum fuse. Exceeding this specification can cause loss of warranty, overheating and potential fire.
Required tools are: 10mm socket, socket extension, ratchet, trim panel removal tool, Phillips screwdriver, side cutter, wire crimper, wire stripper, and fish wire.
The manual does not specify whether the battery must be disconnected. Contact the vehicle manufacturer or Curt Manufacturing for this safety requirement.
Open the vehicle hatch. Remove the two fasteners securing the taillight in place using a 10mm socket. Gently pull the taillight rearward, taking care not to damage the alignment tabs. The vehicle taillight wiring harness connectors will be visible on the backside of the taillight housing. Separate these connectors from the taillight, taking care not to damage the locking tabs.
Route the custom wiring harness with the yellow wire from underneath the vehicle along the rear bumper and up behind the fender to the opening underneath the removed driver side taillight. Insert the harness end with the yellow wire between the separated connectors, ensuring the connectors are fully inserted with locking tabs in place. Repeat this process on the passenger side, routing the harness end with the green wire along the rear bumper.
Locate a suitable grounding point near the connector, such as an existing screw with nut in the vehicle frame. If no existing screw is available, drill a 3/32" pilot hole for the provided screw. The area must be free of rust, dirt and paint. Secure the white ground wire using the ring terminal and provided screw.
Drilling may be required. If a suitable existing screw with nut is not available in the vehicle frame near the taillight connector, you must drill a 3/32" pilot hole for 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.
Locate a flat, clean surface along the vehicle rear bumper that is out of the path of spray and debris from the rear wheels and road. Adhere the black converter box using the provided double-sided tape and cable ties. Failure to mount the box in a protected area can cause loss of warranty, product failure, overheating and potential fire.
Route the black power wire from the vehicle battery as shown on the included CME-PCL-INS sheet. Refer to that sheet for specific routing instructions.
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 it to the center of the vehicle. Secure any loose wires with the provided cable ties.
Test for proper function by using a test light or connecting a properly wired trailer. All steps must be followed to ensure the wiring harness functions properly.
Reinstall all items removed during installation. Install the provided 4-flat dust cover to help prevent corrosion. Test the harness for proper function using a test light or a properly wired trailer.
The Curt 56389 is designed for the Buick Regal TourX passenger car.
You need a 10mm socket, socket extension, ratchet, trim panel removal tool, Phillips screwdriver, side cutter, wire crimper, wire stripper, and fish wire.
The battery connection must be fuse-protected with a 10-amp maximum fuse.
Drilling may be required if no existing screw with nut is available in the vehicle frame. If needed, drill a 3/32" pilot hole for the provided ground screw.
Mount the black converter box on a flat, clean surface along the rear bumper, away from spray and debris from the rear wheels and road, using the provided double-sided tape and cable ties.
Test for proper function using a test light or by connecting a properly wired trailer.
Total for 4 items:
$193.94$223.90
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