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Complete CURT Class 2 1-1/4" trailer hitch and 4-flat custom wiring kit engineered for the 1991 - 1996 Buick Roadmaster Wagon. 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!
Whatever the next checkpoint is on your adventure -- whether it's getting your bike on the trail before sunrise or making it to the campground before dark -- CURT class 2 hitches let you Bring It with confidence. These receiver hitches are made to handle most light-duty towing applications and offer a custom fit for your vehicle. Typically used on full-size cars, crossovers, compact SUVs, minivans or even compact pickup trucks, a CURT class 2 trailer hitch complements the design of smaller vehicles. This particular class 2 hitch is made to be a custom hitch for certain years of the Buick Estate Wagon, LeSabre or Roadmaster, Chevy Caprice, Oldsmobile Custom Cruiser and Pontiac Parisienne (to verify vehicle compatibility, see application info). It offers a weight carrying capacity of 3,500 lbs. GTW and 350 lbs. TW. Class 2 trailer hitches can typically be used to tow a variety of lightweight trailers, such as a small utility trailer, small fishing boat trailer or popup camper (NOTE: Never exceed the lowest weight capacity of any towing component). They are also perfect for adding cargo space to your vehicle with a bike rack or cargo carrier. This class 2 hitch features a 1-1/4" receiver tube to accept a ball mount shank or other hitch-mounted accessory. For safety, it is tested in accordance with SAE J684. A custom trailer hitch design requires extra care, and as such, CURT class 2 hitches are engineered using real vehicles and hands-on research. We use high-strength steel, robotic welding and rigorous testing to produce hitches that are built to fit your lifestyle. To ensure that each hitch will be a reliable extension of your vehicle, we also finish our hitches in a co-curing of liquid A-coat and black powder coat, giving them long-lasting rust and wear resistance.
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 Telluride (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
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1 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 1991 - 1996 | Buick Roadmaster | Wagon |
The 91 - 96 Buick Roadmaster Wagon Curt 1-1/4", Class 2 Trailer Tow Hitch + 4-flat Wiring Kit 12041 (Part #CHW-221) fits 1991-1996 Buick Roadmaster models. The 1996 model year is the last year covered by this part number. For newer models, check for an updated version.
The 91 - 96 Buick Roadmaster Wagon Curt 1-1/4", Class 2 Trailer Tow Hitch + 4-flat Wiring Kit 12041 (Part #CHW-221) fits the following vehicles: 1991-1996 Buick Roadmaster. Always verify your specific year, make, and model before ordering.
Yes, the 91 - 96 Buick Roadmaster Wagon Curt 1-1/4", Class 2 Trailer Tow Hitch + 4-flat Wiring Kit 12041 (Part #CHW-221) is designed to fit the 1991-1996 Buick Roadmaster.
The 91 - 96 Buick Roadmaster Wagon Curt 1-1/4", Class 2 Trailer Tow Hitch + 4-flat Wiring Kit 12041 (Part #CHW-221) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Part number 12041 is designed for: 1991–1996 Buick Roadmaster Estate Wagon; 1977–1990 Buick Estate and Le Sabre station wagon; 1977–1996 Chevrolet Caprice wagon and Impala station wagon; 1977–1992 Oldsmobile Custom Cruiser; and 1983–1986 Pontiac Safari and Parisienne station wagons. If your vehicle is not listed, this hitch is not compatible.
The manual specifies a gross load capacity of 3,500 lbs. trailer weight and 350 lbs. tongue weight when used as a weight-carrying hitch. However, you must not exceed your vehicle manufacturer's recommended towing capacity, which may be lower. Check your vehicle's owner manual for the maximum towing limit.
The hitch weight is 80 lbs.
The hitch is designed for use with ball mount part number D-221 or 45522. Compatibility with other ball mounts is not documented in the manual.
The kit includes: 4× 3/8-16 UNC hex cap screws, grade 8, 1-1/2" long (part 10-10234); 2× 7/16-14 UNC U-bolts, 2-1/2" long (part 10-10571); 4× 3/8-16 UNC serrated flange nuts, grade 8 (part 20-00102); 4× 7/16-14 UNC serrated flange nuts, grade 8 (part 20-00103); and 4× 3/8" split-cone washers (part 30-00148).
No. You only need to remove the lower two bolts from each bumper shock mount located at the end of each frame rail. These bolts are discarded. The bumper itself remains in place.
Yes. You must drill two 1/2" diameter holes in each vehicle frame rail, for a total of four holes. The hitch frame brackets are used as a template to mark the drilling locations. These holes are permanent modifications to the vehicle frame.
Drill two 1/2" diameter holes in each frame rail. Use the holes in the hitch frame brackets as guides to mark the correct locations.
The holes in the bumper mount must accept a 3/8" diameter bolt. If the existing holes are smaller, you must enlarge them to 3/8" to fit the hitch attachment bolts.
Torque the 3/8" bolts to 45 lb.-ft.
Hand-tighten the U-bolts to 55 lb.-ft of torque. Do not over-tighten. Do not use an impact wrench.
No. When you first attach the hitch assembly to the bumper shock mount holes in step 2, do not tighten the bolts. Leave them loose until after you have drilled the frame rail holes and installed the U-bolts. Then torque the 3/8" bolts to 45 lb.-ft in the final step.
1. Remove the lower two bolts from each bumper shock mount and discard them. Enlarge the holes to 3/8" if needed. 2. Attach the hitch assembly to the shock mount holes without tightening. 3. Position the forward arms of the hitch against the bottom of the frame rails. 4. Using the hitch frame brackets as a template, drill two 1/2" holes in each frame rail. 5. Insert a 7/16" U-bolt into each vehicle frame at the drilled holes and bolt the hitch arms to the frame. Hand-tighten U-bolts to 55 lb.-ft. 6. Torque the 3/8" bolts at the shock mounts to 45 lb.-ft.
Non-trailer loads can be carried, but they must be supported by auxiliary stabilizing straps. Failure to properly support non-trailer loads will void the product warranty.
Do not exceed your vehicle manufacturer's recommended towing capacity. Although the hitch is rated for 3,500 lbs. trailer weight and 350 lbs. tongue weight, your vehicle may have a lower limit. Always follow your vehicle manufacturer's specifications.
Periodically check the hitch to ensure that all fasteners are tight and that all structural components are sound. The manual does not specify a retorque interval or maintenance schedule beyond this periodic inspection.
Curt Manufacturing Inc. warrants the product to be free of defects in material and workmanship at the time of retail purchase by the original purchaser. If defective, Curt may repair or replace it at their option when returned prepaid with proof of purchase. Warranty is voided by alteration, misuse, or improper installation. Curt's liability is limited to repair or replacement and excludes incidental or consequential loss or damage.
1991–1996 Buick Roadmaster Estate Wagon; 1977–1990 Buick Estate and Le Sabre station wagon; 1977–1996 Chevrolet Caprice wagon and Impala station wagon; 1977–1992 Oldsmobile Custom Cruiser; and 1983–1986 Pontiac Safari and Parisienne station wagons.
Yes. You must drill four 1/2" holes (two per frame rail) into the vehicle frame rails using the hitch brackets as a template.
A drill with a 1/2" bit, a torque wrench capable of measuring 45 and 55 lb.-ft, and standard wrenches or sockets for 3/8" and 7/16" fasteners. Do not use an impact wrench on the U-bolts.
U-bolts: 55 lb.-ft (hand-tighten, do not use impact wrench). 3/8" bolts at shock mounts: 45 lb.-ft.
3,500 lbs. trailer weight and 350 lbs. tongue weight, but do not exceed your vehicle manufacturer's recommended towing capacity.
Yes. All non-trailer loads must be supported by auxiliary stabilizing straps, or the warranty is voided.
Part 56501 is a powered converter system for SUVs and vans that manages trailer lighting circuits. It includes a converter box, custom wiring harness with color-coded leads (green for right turn, red for brake, yellow for left turn, brown for taillight), a white ground wire with ring terminal, a black power wire, a 4-flat connector, cable ties, double-sided tape, and a ground screw. The system is designed to integrate with your vehicle's factory taillight wiring to provide trailer lighting control.
Part 56501 is designed for SUVs and vans. The manual does not list specific vehicle makes, model years, or body styles. Contact Curt Manufacturing or consult a fitment database to confirm compatibility with your exact vehicle before purchasing.
Part 56501 is designed for 12-volt negative ground electrical systems only. Do not use on positive ground or 24-volt systems.
Required tools are: ratchet, cutting tool, 10mm socket, wire crimper, socket extension, wire stripper, panel trim removal tool, electrical tape, and flathead screwdriver. Proper tools will improve installation quality and reduce time required.
The kit includes: custom wiring harness with color-coded leads (green for right turn, red for brake, yellow for left turn, brown for taillight), white ground wire with ring terminal, black power wire (12 GA), converter box, 4-flat connector with dust cover, cable ties, double-sided tape for converter mounting, ground screw, and a fuse holder with 15-amp fuse. The fuse should be installed only after all other installation steps are complete.
Yes. Disconnect the negative battery terminal in the engine compartment on the driver side before beginning installation. Fasten this wire down and away from the battery while completing the installation. Reconnect it only after all other steps are complete and the fuse has been installed.
Yes. You must remove both the driver and passenger side taillights. Open the rear hatch, loosen the taillight trim push fasteners by pulling toward the rear and middle of the vehicle, remove three taillight fasteners with a 10mm socket, and pull the taillight straight back. Separate the connectors carefully without damaging the locking tabs. Set the taillights aside in a safe place. You will reinstall them after routing the custom wiring harness.
The manual uses a fish wire technique. First, route a fish wire down between the bumper cover in the further rear opening and the vehicle body on both sides. Then, locate the housing with the green wire on the custom harness, attach it to the fish wire from under the vehicle bumper, and pull the harness up to the taillight cavity. Attach the custom harness to the vehicle factory wiring and to the taillight. Repeat this process for the yellow wire housing, routing it above the bumper and securing with zip ties as needed.
Fish wire is a method to push or pull an electrical wire through a blind hole. Make sure the wire is long enough to stick out on the other side. Insert the fish wire through the blind hole and locate it on the other side. Use tape to secure the harness to the fish wire and pull back up. 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 a cut-up wire hanger, stiff wire, rope, or string depending on what is needed.
Locate a flat, clean surface 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. Failure to mount the box in a protected area can cause loss of warranty, product failure, overheating, and potential fire.
You may or may not need to drill. First, locate a grounding point such as an existing screw or bolt in the vehicle frame. If an existing fastener is available, use it. If not, drill a 3/32-inch 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 remove rust and paint. Secure the white ground wire with the ring terminal on the existing fastener or with the provided ground screw.
If you need to drill a ground hole, the pilot hole size is 3/32 inch. Ensure the area is free from rust, dirt, and paint before drilling, and check for hidden items behind or under any surface to avoid damage and injury.
The custom wiring harness uses the following color code: green for right turn signal, red for brake, yellow for left turn signal, and brown for taillight. These colors correspond to standard trailer lighting circuits and connect to your vehicle's factory taillight wiring.
Route the black power wire (12 GA or larger) from the vehicle battery to the converter as shown on the Powered Converter Lead Instruction Sheet. Route the 12 GA wire to 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. Secure the power wire to the vehicle chassis using the provided cable ties. Connect the ring terminal of the black power wire to the positive (+) battery terminal. Do not install the fuse until all other steps are complete.
The battery connection must be fuse-protected with a 15-amp maximum fuse. The kit includes a fuse holder with a 15-amp fuse. Install the fuse only after all other installation steps are complete. Exceeding the 15-amp rating can cause loss of warranty, overheating, and potential fire.
Signal circuits (right turn, left turn) are rated at 3.0 amps per side. Tail and running light circuits are rated at 6.0 amps total. Do not exceed the product rating or the tow vehicle lamp load rating, whichever is lower.
The 4-flat connector is the trailer lighting interface included with the kit. When in use, route the 4-flat with the center of the vehicle and out of the hatch to the trailer, staying clear of the hatch latching mechanism. When not in use, roll it up and store in a convenient, out-of-the-way location. A dust cover is provided to help prevent corrosion when the connector is not in use.
Follow these safety precautions: (1) Disconnect the negative battery terminal before beginning installation. (2) Do not lay tools across the positive battery terminal (typically red or marked with '+') as this can cause a ground short, sparks, and electrical shock. (3) Check for miscellaneous items hidden behind or under any surface before drilling to avoid damage and personal injury. (4) When routing the power wire, avoid pinch points and hot or rotating components. (5) Use a grommet or silicone when passing the power wire through sheet metal to protect it from sharp edges. (6) Mount the converter box in a protected area away from spray and debris from the rear wheels and road. (7) Install the fuse only after all other steps are complete.
After connecting the 12-volt 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. This confirms that all circuits (right turn, left turn, brake, and taillight) are working correctly before final use.
After installation is complete: (1) Verify the harness is functioning using a test light, 4-flat tester, or functioning trailer. (2) Reconnect the negative battery terminal if it was disconnected at the beginning. (3) Reinstall all items removed during installation, including the taillights. (4) Secure any loose wires with the provided cable ties. (5) Install the provided 4-flat dust cover to help prevent corrosion. (6) Store the 4-flat connector in a convenient, out-of-the-way location when not in use.
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 prevents electrical issues over time.
Install the provided 4-flat dust cover to help prevent corrosion. When the connector is not in use, roll it up and store in a convenient, out-of-the-way location with the dust cover in place.
Part 56501 is designed for SUVs and vans. Confirm compatibility with your specific vehicle make and model year before purchasing by contacting Curt Manufacturing or checking a fitment database.
Yes. Disconnect the negative battery terminal before beginning installation and reconnect it only after all other steps are complete and the fuse has been installed.
Drilling is required only for the ground connection if an existing frame bolt or screw is not available. If drilling is needed, the pilot hole size is 3/32 inch. Always check for hidden items before drilling to avoid damage and injury.
Disconnect the negative battery before starting. Do not lay tools across the positive battery terminal (risk of short and sparks). Check for hidden items before drilling. Mount the converter box in a protected area away from spray and debris. Install the fuse only after all other steps are complete.
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