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Complete CURT Class 3 2" trailer hitch and 4-flat custom wiring kit engineered for the 2003 - 2004 Nissan Frontier Long bed. 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 your task at hand -- whether it's launching that boat before daybreak, setting up your camper before the rush or getting a final load to the dump before close -- CURT class 3 trailer hitches offer the strength needed for serious towing. They make it easy to hitch up and Bring It, offering a vehicle-specific fit and the weight capacity to handle a variety of trailers. Custom class 3 hitches are the most common type of receiver hitch for pickup trucks and SUVs. Because of their weight range, they are also found on full-size cars, crossovers and minivans. Each custom-fit class 3 hitch package is made for vehicle-specific mounting. This particular kit fits certain years of the Nissan Frontier (see application info to verify vehicle compatibility). It provides a weight carrying capacity of 5,000 lbs. GTW and 500 lbs. TW. It is also compatible with a weight distribution hitch for level towing and a rating of 6,000 lbs. WD and 600 lbs. WDTW. CURT class 3 trailer hitches are typically used to attach and haul utility trailers, boat trailers, campers, snowmobile or ATV haulers and more (NOTE: Never exceed the lowest-rated towing component). Each class 3 hitch has a 2" receiver tube and is tested in accordance with SAE J684 for safety. To ensure that CURT class 3 receiver hitches have what it takes for serious trailering, they are designed using a hands-on approach and are constructed with rugged, high-strength steel and precise welding. We also protect our class 3 hitches in a co-cured finish of liquid A-coat and black powder coat for superior resistance to rust, chipping and UV damage.
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 Nissan Frontier, Nissan Quest and Mercury Villager (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 888-634-94941 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2003 - 2004 | Nissan Frontier | Long bed |
Yes, the 2003 Nissan Frontier Long bed Curt 2", Class 3 Trailer Tow Hitch + 4-flat Wiring Kit 13842 (Part #CHW-2502) is designed to fit the 2003 Nissan Frontier.
The 2003 Nissan Frontier Long bed Curt 2", Class 3 Trailer Tow Hitch + 4-flat Wiring Kit 13842 (Part #CHW-2502) fits 2003 Nissan Frontier models. The 2003 model year is the last year covered by this part number. For newer models, check for an updated version.
The 2003 Nissan Frontier Long bed Curt 2", Class 3 Trailer Tow Hitch + 4-flat Wiring Kit 13842 (Part #CHW-2502) fits the following vehicles: 2003 Nissan Frontier. Always verify your specific year, make, and model before ordering.
The 2003 Nissan Frontier Long bed Curt 2", Class 3 Trailer Tow Hitch + 4-flat Wiring Kit 13842 (Part #CHW-2502) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
The hitch weight is 44 lbs.
CURT part number 13842 is designed for 2003–2004 Nissan Frontier with 2-door or 4-door cab and long box only. If your Frontier is a different model year, cab style, or has a short box, this hitch is not compatible. Verify your vehicle's year, cab configuration, and bed length before purchasing.
No. The hitch mounting plate has a cutout designed to align with the vehicle exhaust pipe. During installation, you must align the cutout in the mounting plate with the vehicle exhaust pipe to ensure proper clearance and prevent interference.
The hitch includes: 2 hex head cap screws (HHCS) 1/2-13 UNC 1-1/2 inch grade 8; 8 hex bolts 7/16-14 grade 8; 4 serrated flange nuts 7/16-14 UNC grade 8; 4 flat washers 7/16 inch; 4 split-cone washers 7/16 inch; 2 split-cone washers 1/2 inch; and 2 nut plate weldments. All fasteners are grade 8 and yellow zinc-plated.
Yes. The first installation step is to insert the nut plates into the vehicle frame and align the holes in the frame with the nut plates. This must be done before raising the hitch into position.
1. Insert nut plates into the vehicle frame and align frame holes with the nut plates. 2. Raise the hitch into position. 3. Loosely attach the hitch to the frame at mounting locations near the bumper using the 1/2 inch hex bolts provided. 4. Use 7/16 inch hex bolts in all remaining fastener locations as shown in the diagram. 5. Torque all 7/16 inch fasteners to 70 lb.-ft. and all 1/2 inch fasteners to 110 lb.-ft. 6. Align the cutout in the mounting plate with the vehicle exhaust pipe.
Leave fasteners loose initially. First, loosely attach the hitch to the frame at mounting locations near the bumper with the 1/2 inch hex bolts. Then use 7/16 inch hex bolts in remaining locations. Only after all fasteners are in place and the hitch is properly aligned should you torque them to their final specifications.
All 7/16 inch fasteners must be torqued to 70 lb.-ft.
All 1/2 inch fasteners must be torqued to 110 lb.-ft.
The hitch mounting plate must be aligned with existing frame holes on both sides of the vehicle. Additionally, the cutout in the mounting plate must be aligned with the vehicle exhaust pipe. The hitch also mounts to the inside of the bumper bracket as shown in the installation diagram.
The manual specifies gross load capacity limits for weight-carrying use, but the specific trailer weight and tongue weight values are not filled in on the parts list. Contact CURT Manufacturing technical support at 1-877-287-8634 for the exact capacity. Regardless of hitch capacity, do not exceed your vehicle manufacturer's recommended towing capacity.
The manual specifies gross load capacity limits for weight-distribution use, but the specific trailer weight and tongue weight values are not filled in on the parts list. Contact CURT Manufacturing technical support at 1-877-287-8634 for the exact capacity. Regardless of hitch capacity, do not exceed your vehicle manufacturer's recommended towing capacity.
Do not exceed your vehicle manufacturer's recommended towing capacity. This is a critical warning stated in the manual and must be followed regardless of the hitch's rated capacity.
Periodically check the receiver hitch to ensure that all fasteners are tight and that all structural components are sound. The manual does not specify an exact interval, but regular inspection is essential for safe operation.
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 the product is found to be defective, CURT will repair or replace it at their option when returned prepaid with proof of purchase. Warranty is voided by alteration, misuse, or improper installation.
Yes, if your Frontier is a 2003–2004 model with a 2-door or 4-door cab and long box. This hitch does not fit short-box models or other model years.
Torque 7/16 inch fasteners to 70 lb.-ft. and 1/2 inch fasteners to 110 lb.-ft.
The kit includes 2 hex head cap screws (1/2 inch), 8 hex bolts (7/16 inch), 4 serrated flange nuts (7/16 inch), washers, and 2 nut plate weldments. All fasteners are grade 8 steel.
Yes. The hitch mounting plate has a cutout that must be aligned with the vehicle exhaust pipe to prevent interference.
Do not exceed your vehicle manufacturer's recommended towing capacity, even if the hitch is rated higher.
The CURT 56423 is a powered converter lead that converts your vehicle's taillight wiring to a 4-flat trailer connector. It allows you to connect a trailer with standard 4-flat wiring to vehicles with factory taillight harness connectors. The converter is powered by the vehicle battery and includes a fuse-protected power circuit.
The CURT 56423 is designed for 12-volt negative ground vehicles with taillight wiring harness connectors. It is compatible with trucks (wiring location T4, behind center of rear bumper fascia) and SUVs/vans (wiring location S6, behind center of rear bumper). The manual states that battery location may differ depending on the vehicle, so you should verify your vehicle has accessible taillight connectors before purchasing.
You need a cutting tool. The manual also indicates that you may need to drill a 3/32" pilot hole for the ground screw if a suitable existing screw with nut is not available on the vehicle frame. A drill capable of making a 3/32" hole is recommended.
The kit includes: a custom wiring harness with connectors, a black converter box, double-sided tape for mounting the converter, a white ground wire with ring terminal and screw, cable ties for securing loose wires, a 4-flat dust cover, and a 10-amp fuse holder with fuse. The manual also references a 12 GA power wire and butt connectors for battery connection.
Yes. The manual explicitly states: 'Disconnect negative battery (-) cable before wiring the power wire.' This is a required safety step before beginning the installation.
The manual states that the vehicle taillight wiring harness connectors are located 'under the vehicle behind the spare tire,' but does not explicitly state whether the spare tire must be removed. You should check your vehicle's configuration to determine if removal is necessary to access the connectors.
Follow these steps in order: 1) Locate the vehicle taillight wiring harness connectors under the vehicle behind the spare tire and separate them from the taillight housing. 2) Insert the custom wiring harness between the separated connectors, ensuring they are fully inserted with locking tabs in place. 3) Locate a suitable grounding point near the connector and secure the white ground wire using the ring terminal and provided screw (drill a 3/32" pilot hole if necessary). 4) Adhere the black converter box to a flat spot near the vehicle factory plug using the provided double-sided tape. 5) Route the 4-flat to the center of the vehicle near the hitch and secure loose wires with cable ties. 6) Reconnect the negative battery terminal and install the 4-flat dust cover.
Route a 12 GA wire or larger from the converter to the vehicle battery location, taking care to avoid pinch points and hot or rotating components. Use an existing grommet, add a grommet, or use silicone to protect the power wire from sharp edges when passing through sheet metal. Attach the ring terminal of the power wire to the positive (+) battery terminal. Secure the power wire to the vehicle chassis using the provided cable ties. Install the 10-amp fuse holder with fuse after all other steps are complete.
Locate a suitable grounding point near the connector, such as an existing screw with nut in the vehicle frame. The area should be free of rust, dirt and paint. Secure the white ground wire using the ring terminal and the provided screw. If no suitable existing screw is available, drill a 3/32" pilot hole and use the provided screw to secure the ground wire to the vehicle body.
Locate a flat spot near the vehicle factory plug. Adhere the black converter box using the provided double-sided tape. Ensure the surface is clean and dry for proper adhesion.
Route the 4-flat to the center of the vehicle near the hitch. Secure any loose wires with the provided cable ties to prevent movement and potential damage.
Drilling is not always required. If a suitable existing screw with nut is available on the vehicle frame near the connector, you can use that for grounding. If no suitable existing screw is available, you will need to drill a 3/32" pilot hole for the provided ground screw. Before drilling, check for miscellaneous items that may be behind or under any surface to avoid personal injury or property damage.
Drill a 3/32" pilot hole for the provided ground screw if a suitable existing screw with nut is not available on the vehicle frame.
Signal circuits: 3.0 amps per side. Tail/Running circuits: 6.0 amps total. The battery connection must be fuse-protected with a 10-amp max fuse. Do not exceed the product rating or tow vehicle lamp load rating, whichever is lower.
Use a 10-amp fuse maximum. The manual states: 'The battery connection must be fuse-protected, 10-amp max.' Install the fuse after all other installation steps are complete.
Use 12 GA wire or larger for the power connection from the converter to the vehicle battery.
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 ground wire is used for grounding to the vehicle body. The black power wire connects to the positive battery terminal.
No. The manual explicitly states: 'This converter system is to be used only on 12 volt negative ground systems.' It is not compatible with positive ground systems.
If using the converter as a powered module for a two-wire system, the red brake wire must be grounded.
When passing the power wire through sheet metal, use an existing grommet, add a grommet, or use silicone to protect the power wire from sharp edges.
Do not exceed the product rating or tow vehicle lamp load rating, whichever is lower. The battery connection must be fuse-protected, 10-amp max. Exceeding the product rating can cause loss of warranty, overheating and potential fire.
Before drilling, check for miscellaneous items that may be behind or under any surface to avoid personal injury or property damage.
Route the 12 GA power wire to the vehicle battery location, taking care to avoid any pinch points and hot or rotating components. Secure the power wire to the vehicle chassis using the provided cable ties.
After installation, reinstall all items removed during installation. If the negative battery terminal was disconnected, reconnect it. 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.
Test for proper function by using a test light or connecting a properly wired trailer. This will verify that all wiring connections are correct and the converter is functioning properly.
Periodic inspection of all wires and connections should be performed to ensure there is no visible damage or loose connections. This will help maintain proper function and prevent electrical issues.
The CURT 56423 is designed for 12-volt negative ground vehicles with taillight wiring harness connectors. It fits trucks (T4 location) and SUVs/vans (S6 location). Verify your vehicle has accessible taillight connectors before purchasing.
Yes, you must disconnect the negative battery cable before wiring the power wire. Reconnect it after all other installation steps are complete.
Use a 10-amp fuse maximum. The battery connection must be fuse-protected with a 10-amp max fuse. Install the fuse after all other steps are complete.
Use 12 GA wire or larger for the power connection from the converter to the vehicle battery.
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