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1990 - 1996 Infiniti Q45
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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) | 200 LB |
| Warranty | Limited Lifetime Warranty (One-Year Finish, One-Year Parts) |
| Weight Carrying Capacity (WC) | 2,000 LB |
| 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 | 7.5 Amps |
| Turn and Brake Circuits | 3.0 Amps |
| Warranty | One-Year Limited Warranty |
| Battery-Powered | Yes |
| 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 |
|---|---|---|
| 1990 - 1996 | Infiniti Q45 | — |
Yes, the 90-96 Infiniti Q45 1.25 CURT Trailer Hitch + Assure Proportional Brake Controller Kit HBCW1484 (Part #HBCW1484) is designed to fit the 1990-1996 Infiniti Q45.
The 90-96 Infiniti Q45 1.25 CURT Trailer Hitch + Assure Proportional Brake Controller Kit HBCW1484 (Part #HBCW1484) fits 1990-1996 Infiniti Q45 models. The 1996 model year is the last year covered by this part number. For newer models, check for an updated version.
The 90-96 Infiniti Q45 1.25 CURT Trailer Hitch + Assure Proportional Brake Controller Kit HBCW1484 (Part #HBCW1484) fits the following vehicles: 1990-1996 Infiniti Q45. Always verify your specific year, make, and model before ordering.
The 90-96 Infiniti Q45 1.25 CURT Trailer Hitch + Assure Proportional Brake Controller Kit HBCW1484 (Part #HBCW1484) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Yes, the CURT 11407 is designed for 2014-Present Infiniti Q50 Sedan models. Before purchasing, verify your vehicle matches this specification and that you have access to the frame rails on both driver and passenger sides, as the installation requires routing hardware through existing holes in the frame.
The CURT 11407 is designed for use with ball mount 45521. Euro mount options are also available: 45571 (1 7/8" ball) or 45572 (2" ball). Consult the CURT catalog or website to confirm which mount suits your towing needs.
The CURT 11407 has a gross load capacity of 2,000 lbs trailer weight and 200 lbs tongue weight when used as a weight-carrying hitch. You must not exceed your vehicle manufacturer's recommended towing capacity, which may be lower than these figures.
Required tools are: ratchet, torque wrench, 11/16" socket, 12mm socket, socket extension, die grinder, and safety glasses. The die grinder is essential for enlarging the access holes in the frame to allow the carriage bolts and spacers to pass through.
Two people may be required to ease installation. The manual rates this as a moderate to challenging installation. If you are hesitant to undertake this task on your own, contact an authorized CURT installer for additional assistance. Technical support is available at 877.287.8634.
No, you do not need to remove the exhaust system completely. Step 1 requires you to temporarily lower the exhaust by removing 6 bolts from the muffler brackets. Retain these bolts for reinstallation. After the hitch is installed, re-attach the muffler brackets and torque all M8 muffler bracket hardware to 23 ft-lbs.
No drilling is required. However, you must enlarge the existing access holes in the frame using a die grinder to allow the 7/16" carriage bolts and spacers to pass through. The manual does not specify the exact enlarged hole dimensions, so consult the product diagram or contact CURT technical support at 877.287.8634 for precise measurements.
Torque all 7/16" hardware (carriage bolts and flange nuts) to 59 ft-lbs. After re-attaching the muffler brackets, torque all M8 muffler bracket hardware to 23 ft-lbs. Use a calibrated torque wrench to ensure proper fastener tension.
Fishwire is a routing technique to guide the 7/16" carriage bolts and CM-SP7 spacers through the enlarged access hole and out the existing holes in the side of the frame rail. Thread the fishwire through the enlarged hole, attach the bolts and spacers to the fishwire, then pull the fishwire to draw the hardware through. Leave the fishwires attached during this process to prevent loss of hardware into the frame rails. Push the carriage bolts back into the frame rail before raising the hitch into position.
The kit includes: 4 pieces of 7/16" fishwire, 4 grade-8 7/16"-14 UNC carriage bolts (1-1/2" long, part 10-10282), 4 grade-8 7/16"-14 UNC flange nuts (part 20-00103), and 4 square hole spacers (0.250 x 1.00 x 2.00", part CM-SP7). All fasteners are grade 8 and must be torqued to 59 ft-lbs.
Safety glasses must be worn at all times during installation. Before beginning, read all instructions thoroughly. If you are hesitant to undertake this task, contact an authorized CURT installer. After installation, periodically check the receiver hitch to ensure all fasteners are tight and all structural components are sound.
All non-trailer (wheel-less) loads applied to this product must be supported by 18050 stabilizing straps. Failure to properly support non-trailer loads will void the product warranty. See the CURT catalog or visit www.curtmfg.com for further information on stabilizing straps.
After installation, verify that all 7/16" fasteners are torqued to 59 ft-lbs and all M8 muffler bracket fasteners are torqued to 23 ft-lbs. Periodically check the receiver hitch to ensure all fasteners remain tight and all structural components are sound. This ongoing maintenance is essential for safe towing.
The manual requires periodic checks to ensure all fasteners are tight and all structural components are sound. While a specific interval is not stated, regular inspection before towing is recommended. If fasteners become loose, re-torque all 7/16" hardware to 59 ft-lbs and all M8 muffler bracket hardware to 23 ft-lbs.
Yes, the CURT 11407 is designed for 2014-Present Infiniti Q50 Sedan models.
2,000 lbs trailer weight and 200 lbs tongue weight. Do not exceed your vehicle manufacturer's recommended towing capacity.
Ratchet, torque wrench, 11/16" socket, 12mm socket, socket extension, die grinder, and safety glasses. The die grinder is needed to enlarge access holes.
No drilling is required, but you must use a die grinder to enlarge the existing access holes in the frame to allow the carriage bolts and spacers to pass through.
Torque all 7/16" hardware to 59 ft-lbs. Torque all M8 muffler bracket hardware to 23 ft-lbs.
No. Temporarily lower the exhaust by removing 6 bolts from the muffler brackets, then re-attach them after the hitch is installed. Torque muffler bracket hardware to 23 ft-lbs.
All non-trailer loads must be supported by 18050 stabilizing straps. Failure to do so voids the warranty.
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.
Yes, the Curt 56248 is designed for the Infiniti Q50. The harness connects to the vehicle's taillight wiring connectors located behind the taillight housings inside the trunk.
The harness is rated for 3.0 amps per side for signal circuits and 6.0 amps total for tail and running circuits. Do not exceed these ratings or the tow vehicle lamp load rating, whichever is lower, as exceeding the product rating can cause loss of warranty, overheating and potential fire.
You will need a panel trim removal tool and a flat blade screwdriver. If you need to create a grounding point, you will also need to drill a 3/32" pilot hole.
Yes. Step 1 requires you to locate the vehicle battery on the driver side under the hood and disconnect the negative battery terminal before beginning installation.
The taillight wiring connectors are located behind the taillight housings inside the trunk. You will find them by pulling back the felt liner after removing the trunk floor coverings and scuff panel. The connectors are T-connector style, similar to the custom wiring harness connectors.
Separate the vehicle's taillight wiring connectors from the taillight housing, taking care not to damage the locking tabs. Insert the custom wiring harness end with the green wire between the separated connectors on the passenger side, and the end with the yellow wire on the driver side. Make sure the connectors are fully inserted with locking tabs in place.
Drilling is optional. You must locate a suitable grounding point near the connector, such as an existing screw with nut in the vehicle's frame. If no existing screw is available, you may drill a 3/32" pilot hole for the provided screw. The area should be free of rust, dirt and paint. Before drilling, check for miscellaneous items that may be hidden behind or under any surface to avoid damage and personal injury.
Locate a suitable grounding point near the connector, such as an existing screw with nut in the vehicle's frame, or 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 the provided screw.
Locate a flat spot inside the vehicle near the taillight and adhere the black converter box using the provided double-sided tape.
The battery connection must be fuse-protected with a maximum 10-amp fuse. Exceeding this rating can cause loss of warranty, overheating and potential fire. Do not exceed the product rating or tow vehicle lamp load rating, whichever is lower.
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.
Reinstall all items removed during installation and reconnect the negative battery terminal. Install the provided 4-flat dust cover to help prevent corrosion. Test for proper function by using a test light or connecting a properly wired trailer.
The harness is rated for 3.0 amps per side for signal circuits and 6.0 amps total for tail and running circuits. Do not exceed these ratings or the tow vehicle lamp load rating, whichever is lower. Exceeding the product rating can cause loss of warranty, overheating and potential fire.
The Curt 56248 is designed for the Infiniti Q50.
You need a panel trim removal tool and a flat blade screwdriver. A 3/32" drill bit is required only if you need to create a grounding point.
Yes, disconnect the negative battery terminal before beginning installation.
A 10-amp maximum fuse is required for the battery connection. Do not exceed this rating.
Drilling is optional. You may use an existing screw in the vehicle's frame for grounding, or drill a 3/32" pilot hole if no existing screw is available.
Signal circuits are rated for 3.0 amps per side; tail and running circuits are rated for 6.0 amps total. Do not exceed these ratings or the vehicle's lamp load rating.
Test for proper function by using a test light or connecting a properly wired trailer.
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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