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| Finish | GLOSS BLACK POWDER COAT |
| Main Body Shape | Square |
| Material | Carbon Steel |
| Mount Type Description | Blank |
| Receiver Tube Size | 1-1/4 IN |
| Side Application Type Description | Blank |
| Tongue Weight (TW) | 350 LB |
| Warranty | Limited Lifetime Warranty (One-Year Finish, One-Year Parts) |
| Weight Carrying Capacity (WC) | 3,500 LB |
| Battery-Powered | Yes |
| Converter Type | Circuit Protected and Powered |
| Electrical System Type | 3W |
| Finish | N/A |
| Material | Blank |
| Mount Type Description | Blank |
| Output Type | 4-Way Flat |
| Side Application Type Description | Blank |
| T-Connector Location | P3,P4 |
| Tail Light Circuits | 6.0 Amps |
| Turn and Brake Circuits | 3.0 Amps |
| Warranty | One-Year Limited Warranty |
| Side Application Type Description | Blank |
| Tongue Weight (TW) | 350 LB |
| Warranty | Limited Lifetime Warranty (One-Year Finish, One-Year Parts) |
| Drop | 3-1/4 IN |
| Finish | GLOSS BLACK POWDER COAT |
| Gross Trailer Weight (GTW) | 3,500 LB |
| Material | Blank |
| Mount Type Description | Blank |
Notes:
Notes:
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 888-634-94941 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2000 - 2004 | Volvo S40 | 4th digit of VIN is 'V' |
Yes, the 00-04 Volvo S40 4th digit of VIN is 'V' 1.25 CURT Trailer Hitch + Assure Proportional Brake Controller Kit HBCW2540 (Part #HBCW2540) is designed to fit the 2000-2004 Volvo S40.
The 00-04 Volvo S40 4th digit of VIN is 'V' 1.25 CURT Trailer Hitch + Assure Proportional Brake Controller Kit HBCW2540 (Part #HBCW2540) fits 2000-2004 Volvo S40 models. The 2004 model year is the last year covered by this part number. For newer models, check for an updated version.
The 00-04 Volvo S40 4th digit of VIN is 'V' 1.25 CURT Trailer Hitch + Assure Proportional Brake Controller Kit HBCW2540 (Part #HBCW2540) fits the following vehicles: 2000-2004 Volvo S40. Always verify your specific year, make, and model before ordering.
The 00-04 Volvo S40 4th digit of VIN is 'V' 1.25 CURT Trailer Hitch + Assure Proportional Brake Controller Kit HBCW2540 (Part #HBCW2540) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
The CURT 12066 receiver hitch fits Volvo S60, V60, V70, and XC70 models from 2008 to present, in both sedan and wagon body styles. Confirm your model and year match before purchasing.
The CURT 12066 is rated for a maximum of 3,500 lbs trailer weight and 350 lbs tongue weight when used as a weight-carrying hitch. You must never exceed your vehicle manufacturer's recommended towing capacity, which may be lower.
Yes, but all non-trailer loads (wheel-less loads) applied to this hitch must be supported by CURT 18050 stabilizing straps. Failure to properly support non-trailer loads with these straps will void the product warranty.
No, drilling is not required. The hitch uses existing factory weld nut holes on the Volvo bumper beam. You may need to clean out the six weld nut holes before installation.
Yes, trimming a 2" by 2.5" notch in the lower bumper fascia is required. Using a rotary tool, carefully cut out the bottom center of the fascia to the dimensions shown in Figure 1. Trim dimensions are approximate; confirm fit before trimming. Heat shield trimming may also be required for clearance around the receiver tube.
Required tools are: T20 and T25 Torx drivers, 8mm, 10mm, 13mm, 14mm, and 17mm sockets, 6" socket extension, ratchet, torque wrench, and rotary tool. Safety glasses must be worn at all times during installation.
Two people are recommended to ease installation, particularly for removing the rear bumper fascia to prevent scratches or damage to the vehicle.
On V70 and XC70 models, the towing eye must be loosened (not fully removed) to allow bumper beam removal. On S60 and V60 models, the towing eye may require removal depending on the specific vehicle configuration. The hitch is then sandwiched between the bumper beam and towing eye during reinstallation.
The kit includes 6 M10x1.5 hex head cap screws (HHCS) at 45mm length, class 10.9 (part 10-10414), 6 conical tooth washers 7/16" (part 30-00163), 2 round hole spacers 0.375" x 1.25" x 2.00" (part CM-SP56), and 2 flat 0.375" spacers (part 12066-SP).
All M10 fasteners must be torqued to 45 lb-ft. This includes the hitch mounting bolts and the towing eye bolts on V70 and XC70 models.
Use the supplied spacer plates if the mounting surface on the Volvo has raised edges around the perimeter and center holes. The Volvo S60 has spot welded plates with this configuration. The spacers are installed between the hitch and bumper beam to ensure proper alignment.
1. Remove rear bumper fascia and disconnect backup sensor if present. 2. Loosen towing eye (V70/XC70 only). 3. Remove bumper beam. 4. Place hitch into bumper beam aligning holes. 5. Raise hitch and bumper beam into position using supplied spacers if needed. 6. Hand tighten M10 bolts and conical washers. 7. Reinstall towing eye if applicable and hand tighten. 8. Torque all M10 fasteners to 45 lb-ft. 9. Retighten towing eye from inside vehicle (V70/XC70 only). 10. Replace appearance panel bolts (V70/XC70 only). 11. Trim fascia using rotary tool and reinstall.
After installation, ensure the fascia sits flat along the rear shelf of the trunk. Periodically check that all fasteners are tight and all structural components are sound. This should be done regularly throughout the life of the hitch.
Periodically check the receiver hitch to ensure all fasteners are tight and all structural components are sound. The manual does not specify an exact interval, but regular inspection is recommended to maintain safety and warranty compliance.
Safety glasses must be worn at all times during installation. Two people are recommended to remove the fascia to prevent scratches or damage. Use proper tools to improve installation quality and reduce time required.
CURT Manufacturing warrants this 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 the product 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.
Yes, the CURT 12066 fits all Volvo S60, V60, V70, and XC70 models from 2008 to present in sedan and wagon styles.
No drilling required. Fascia trimming (2" x 2.5" notch) is required using a rotary tool.
T20 and T25 Torx drivers, 8/10/13/14/17mm sockets, 6" extension, ratchet, torque wrench, rotary tool, and safety glasses.
Two people are recommended, especially for removing the rear bumper fascia.
All M10 fasteners must be torqued to 45 lb-ft.
Yes, but non-trailer loads must be supported by CURT 18050 stabilizing straps or warranty is voided.
Ensure fascia sits flat on rear trunk shelf. Periodically check that all fasteners are tight and structural components are sound.
The kit includes: one 30 amp auto-resetting circuit breaker, two #10 ring terminals, two 3/8" ring terminals, two 1/2" ring terminals, three 12-10 gauge butt connectors, 10 feet of 10 ga black/white duplex wire, 20 feet of 10 ga blue cross-linked wire, and eight 8.5" cable ties.
Yes, but with a critical difference: these vehicles require the stop signal wire to be spliced to the light green wire on the turn signal harness connector under the dash, not to the brake pedal switch. Do NOT connect to the red wire with green stripe, as serious damage may occur. All other vehicles connect to the brake pedal switch instead.
You will need: a test light, wire stripper/cutter, crimp tool, and 3/8" box end wrench. The test light is used to identify the cold (switched) side of the brake pedal switch.
Yes. The manual cautions to disconnect the tow vehicle's negative battery cable before installation. Reconnect it only in the final step after all wiring is complete.
Mount the 30 amp circuit breaker near the tow vehicle's positive battery terminal. This keeps the power wire run as short as possible and protects the circuit.
Use 10 gauge (10 ga) black wire from the duplex wire included in the kit. Strip 3/8" of insulation from each end. Crimp a #10 ring terminal to the end that attaches to the circuit breaker stud labeled 'BAT', and a 3/8" or 1/2" ring terminal (sized to fit your battery terminal) to the end that attaches to the positive battery terminal.
Feed the 10 ga duplex wire from the brake controller in the cockpit through the firewall into the engine compartment toward the battery. Cut to length as needed. At the battery end, crimp a 3/8" or 1/2" ring terminal to the white wire and a #10 ring terminal to the black wire. Attach the black wire to the circuit breaker stud labeled 'AUX' and tighten the nut with a 3/8" box end wrench.
When passing the duplex wire through the firewall into the engine compartment, use an existing grommet, add a new grommet, or fill the hole with silicone rubber to insulate and protect the wire. The same protection applies when passing the blue cross-linked wire through any sheet metal at the rear of the vehicle.
In the cockpit, attach the black duplex wire to the brake controller's battery wire (typically black) and the white duplex wire to the brake controller's ground wire (typically white). Use either one of the supplied yellow butt connectors or solder the leads together and insulate with heat shrink tubing.
Locate the brake pedal switch on the back side of the vehicle's brake pedal. Use a test light or volt meter to identify the 'cold' or switched side—this terminal will only show power when the brake pedal is depressed. Attach the stop signal wire (typically red) from the brake controller to the cold side of the switch using a wire tap.
Locate the semi-circle turn signal harness connector on the steering column under the dash. It has two rows of wires: a row of four and a row of seven. Attach the stop signal wire (typically red) from the brake controller to the light green wire using a wire tap. Do NOT connect to the red wire with green stripe, as serious damage may occur.
Feed the 10 ga blue cross-linked wire from the brake controller to the trailer connector at the rear of the vehicle, taking up any slack in the wire. When passing through any sheet metal, use an existing grommet, add a new grommet, or fill the hole with silicone rubber to protect the wire.
Attach the blue cross-linked wire to the brake controller's electric brake wire (typically blue) using one of the supplied yellow butt connectors or by soldering and insulating with heat shrink tubing. At the rear of the vehicle, trim any loose blue wire and attach it to the trailer connector's electric brake terminal. Refer to the trailer connector's wiring diagram for the correct terminal location.
Secure any loose wires with the cable ties provided. Connect the black power wire from the circuit breaker to the positive side of the battery. Connect the white ground wire from the brake controller to the negative side of the battery. Finally, reconnect the tow vehicle's negative battery cable to the battery.
The circuit breaker is 30 amps and auto-resetting. It must be mounted near the positive battery terminal and connected directly to the positive battery terminal via the included black 10 gauge wire.
Use a 3/8" box end wrench to tighten the nuts on the circuit breaker studs labeled 'BAT' and 'AUX'.
The kit includes 10 feet of 10 gauge black/white duplex wire for the battery and brake controller connections, and 20 feet of 10 gauge blue cross-linked wire for the electric brake signal to the trailer connector.
Black wire connects to the positive battery and circuit breaker. White wire connects to the brake controller ground and negative battery. Red wire is the stop signal wire from the brake controller. Blue wire is the electric brake signal wire. The manual notes these are 'typically' these colours but recommends confirming with your brake controller documentation.
Yes. You can solder the leads together and insulate with heat shrink tubing as an alternative to using the supplied yellow butt connectors. This applies to connections between the duplex wire and the brake controller wires, and between the blue cross-linked wire and the brake controller.
The black power wire must connect directly to the positive battery terminal via the 30 amp circuit breaker. Connecting to the fuse panel or any other accessory wiring may damage vehicle wiring and cause trailer brake failure. The circuit breaker protects the circuit and must be the only protection between the battery and the brake control system.
Do NOT connect the stop signal wire to the red wire with green stripe on the turn signal harness. Serious damage may occur. Connect only to the light green wire. Also, do not connect to the brake pedal switch on these vehicles; use the turn signal harness instead.
The kit is universal but requires an existing trailer connector and brake controller. 1989-1991 Ford E & F-Series with ABS use a different stop signal connection (turn signal harness instead of brake pedal switch). Consult your brake controller documentation for compatibility.
No drilling is required. The kit connects to existing components: the battery, brake controller, brake pedal switch (or turn signal harness on 1989-1991 Ford E & F-Series with ABS), and trailer connector.
Do NOT connect the stop signal wire to the red wire with green stripe on the turn signal harness—serious damage may occur. Connect to the light green wire instead, and do not use the brake pedal switch.
Connecting to the fuse panel or accessory wiring may damage vehicle wiring and cause trailer brake failure. The 30 amp circuit breaker must be the only protection between the battery and the brake control system.
The Curt 56224 is designed for Volvo S60, S60 long wheel base, and S60 (including S60L) with T5 trims only (4-cylinder turbo engines). If your vehicle matches these specifications, it will fit. For other engine types or model years not listed, contact the vehicle manufacturer or Curt for confirmation.
The Curt 56224 has a Signal Circuits rating of 3.0 amps per side and a Tail/Running Circuits rating of 6.0 amps total. The battery connection must be fuse-protected with a 10-amp maximum fuse. Do not exceed the product rating or your tow vehicle's lamp load rating, whichever is lower, as exceeding it can cause loss of warranty, overheating and potential fire.
You will need a panel trim removal tool and a 10mm socket. The manual also indicates that you may need to drill a 3/32" pilot hole for a ground screw if a suitable existing screw is not available near the taillight connector.
Yes. Step 2 of the installation requires you to locate the vehicle's battery on the driver side under the hood and disconnect the negative battery terminal before proceeding with any other steps.
The vehicle's wiring harness connectors are located in the trunk behind the taillight housings. The driver-side connector is at position P3 (behind driver side taillight housing, inside of trunk) and the passenger-side connector is at position P4 (behind passenger side taillight housing, inside of trunk). You will need to remove the trunk floor coverings and rear scuff panel to access them.
Pull back the felt trunk liner behind each taillight to locate the vehicle's taillight wiring harness connectors. Separate the connectors carefully, taking care not to damage the locking tabs. Insert the T-connector end (yellow wire on driver side, green wire on passenger side) between the separated connectors. Make sure the connectors are fully inserted with locking tabs in place.
Locate a suitable grounding point near the connector, such as an existing screw with nut in the vehicle's frame. If no suitable point exists, 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. 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. Step 8 instructs you to locate a suitable existing grounding point (such as an existing screw with nut in the vehicle's frame). If no suitable point is available, you must drill a 3/32" pilot hole for the provided ground screw. Before drilling, check for miscellaneous items hidden behind or under any surface to avoid damage and personal injury.
When in use, route the 4-flat to the center of the vehicle. When not in use, roll it up and store in a convenient, out-of-the-way location. Secure any loose wires with the provided cable ties. Install the provided 4-flat dust cover to help prevent corrosion.
Locate a flat spot inside the vehicle near the taillight and adhere the black converter box using the double-sided tape provided.
After reinstalling all items removed during installation and reconnecting the negative battery terminal, 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.
First, remove the 10mm bolts and cargo tie downs located on each side of the rear scuff panel. Then remove the scuff panel by pulling out on the bottom and then up.
The battery connection must be fuse-protected with a 10-amp maximum. Exceeding this rating can cause loss of warranty, overheating and potential fire. Do not exceed the product rating or your tow vehicle's lamp load rating, whichever is lower.
The Curt 56224 fits Volvo S60, S60 long wheel base, and S60 (including S60L) with T5 trims only (4-cylinder turbo engines).
You need a panel trim removal tool and a 10mm socket. A drill may be required if no suitable ground point exists.
Yes, disconnect the negative battery terminal before beginning installation.
Signal Circuits: 3.0 amps per side. Tail/Running Circuits: 6.0 amps total. Battery connection must use a 10-amp maximum fuse.
The battery connection must be fuse-protected with a 10-amp maximum. Exceeding this can cause loss of warranty, overheating and potential fire.
The 4-way flat electrical adapter converts a vehicle's 4-way flat trailer connector to other trailer connector types (6-way round, 7-way RV blade, or dual 4-way flat). This allows you to tow trailers with different connector styles. Single-output models (57184, 57183, 57185, 57626, 57676) convert to one connector type; dual-output models (57604, 57624, 57672, 57674, 57102) provide two different connector outputs simultaneously.
Yes. Your vehicle must be equipped with a 4-way flat trailer connector. If your vehicle does not have one, you will need to install a custom wiring harness or other 4-way flat trailer connector before installing this adapter.
Both convert a 4-way flat connector to a 7-way RV blade. The difference is that 57185 includes a mounting bracket, while 57184 does not.
Both convert a 4-way flat connector to a 6-way round. The difference is that 57626 includes a mounting bracket, while 57183 does not.
Curt offers three dual-output models that provide both a 4-way flat and a 7-way RV blade output: part numbers 57672, 57674, and 57102. All three include a mounting bracket.
Curt offers two dual-output models that provide both a 4-way flat and a 6-way round output: part numbers 57604 and 57624. Both include a mounting bracket.
You will need: a 1/8" drill bit, drill, Phillips screwdriver, wire stripper, cutting tool, terminal crimpers, and a test light. The manual also lists three self-tapping screws (#10 - 1/2") as required, though these are not included with the product.
No. The three self-tapping screws (#10 - 1/2") used to attach the mounting bracket are not included and must be purchased separately.
Mount the combination harness in a location on the tow vehicle that is within reach of the trailer's wiring harness and near the center of the vehicle. The mounting bracket (if included) should be attached to the vehicle's bumper or other suitable surface.
Yes. You must drill two 1/8" holes: one for the grounding point and one (or more) for the mounting bracket. Before drilling, you must check for brake lines, fuel lines, wiring and other components that may be hidden behind or under the surface to avoid damage.
No. You must never attach the mounting bracket directly to the hitch by cutting, welding or drilling into the hitch. Mount it to the vehicle's bumper or other suitable surface instead.
The adapter uses four wires: Yellow (auxiliary or back-up lights), Blue (electric brakes), Black (positive power with appropriate inline fuse), and White (ground). All wires except black and white must be connected using 12 gauge (minimum) wire and butt connectors to the appropriate vehicle functions.
The white wire is the ground connection. It must be attached with a ring terminal to a 1/8" hole drilled in a suitable grounding point on the vehicle using a #10 - 1/2" self-tapping screw. This ground connection is required for the harness to work properly. The white wire on the vehicle's 4-way flat connector does not support the ground (-) functions of the combination harness.
Yes. The black wire (positive power) must be connected with an appropriate inline fuse. The manual does not specify the fuse amperage rating.
Use 12 gauge (minimum) wire for all connections. The manual specifies this minimum gauge for the remaining wires (yellow, blue, and black) when connecting to appropriate vehicle functions.
Failing to properly ground the product can cause loss of warranty, overheating and potential fire. The white wire must be securely attached to a clean grounding point using a #10 - 1/2" self-tapping screw in a 1/8" hole. The area must be clean of dirt, debris or undercoating.
Before drilling, you must check for brake lines, fuel lines, wiring and any other components that may be hidden behind or under the surface. Drilling into these components can cause damage and personal injury.
Do not exceed the product rating or the tow vehicle lamp load rating, whichever is lower. Exceeding either rating can cause damage or unsafe operation.
Confirm proper function with a test light or by using a properly functioning trailer. This verifies that all connections are working correctly before towing.
Secure any loose wires using cable ties or equivalent product to prevent them from moving, catching on components, or becoming damaged.
Your vehicle must have a 4-way flat trailer connector. If it does not, you will need to install a custom wiring harness or other 4-way flat connector first. Check the part number table to confirm the adapter converts to the connector type you need.
You must purchase three #10 - 1/2" self-tapping screws for the mounting bracket. You will also need an appropriate inline fuse for the black (positive power) wire; the manual does not specify the amperage.
Yes, you must drill two 1/8" holes: one for grounding and one for the mounting bracket. Before drilling, check for brake lines, fuel lines and wiring behind the surface. Never drill into the hitch.
Yellow = auxiliary/back-up lights; Blue = electric brakes; Black = positive power (needs inline fuse); White = ground (must be properly grounded or warranty is void and fire risk exists). Use 12 gauge minimum wire and butt connectors.
Proper grounding of the white wire is critical. Failing to ground it properly can cause loss of warranty, overheating and fire. The grounding point must be clean of dirt, debris and undercoating.
Test with a test light or by using a properly functioning trailer to confirm all connections work. Secure loose wires with cable ties.
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