
Ask a Question About This Product
Our in-house experts typically reply within one business day.
Our in-house experts typically reply within one business day.
CURT
Verify Fitment
Select your vehicle to confirm this part fits.











Always the correct part
We know our products
Quality Products
Free Shipping!











Always the correct part
We know our products
Quality Products
Free Shipping!
Complete CURT Class 1 1-1/4" trailer hitch and 5-flat wiring kit (with 4-way to 5-way adapter for surge brakes) engineered for the 2016 - 2018 Honda Civic Sedan, excluding center exhaust. 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!
However you define adventure -- whether it's climbing onto the back of a mountain bike, hunting from the top of a tree stand or camping with the family a long way from nowhere -- CURT class 1 hitches provide a light-duty towing receiver to help you Bring It. Each is made to fit a specific vehicle, providing easier installation, a better fit and optimal towing capacity. Custom class 1 trailer hitches are available for a variety of smaller vehicle types, including the compact car, crossover, minivan and small SUV. This particular class 1 hitch is designed to be a custom hitch for certain years of the Honda Civic (to verify vehicle compatibility, see the CURT application guide at curtmfg.com). Tested in accordance with SAE J684, it offers a weight carrying capacity of 2,000 lbs. GTW and 200 lbs. TW. It is equipped with 1-1/4" receiver tube opening to accept a ball mount shank or other hitch mount. This class 1 hitch also comes with all necessary mounting hardware. With its lightweight design and smaller receiver tube size, a class 1 hitch is especially useful for adding cargo space with a hitch-mounted bike rack or cargo carrier. They can also typically be used to tow small trailers such as a utility trailer, kayak trailer or teardrop camper (never exceed the lowest weight capacity of any towing component; i.e. the vehicle, hitch, trailer, etc). Though CURT class 1 trailer hitches are only intended for light-duty towing, we apply the same principles of quality as we do to the rest of our rear mount hitches. Each class 1 hitch is made with hands-on engineering, high-strength steel and precise welding. We use a co-cured finish of liquid A-coat, inside and out, and durable black powder coat to provide a lasting defense against rust, chips and UV rays.
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 Honda Civic (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 |
|---|---|---|
| 2016 - 2018 | Honda Civic | Sedan, excluding center exhaust |
The 16 - 18 Honda Civic Sedan, excluding center exhaust Curt 1-1/4" Class 1 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 11604 (Part #5W-CHW-1737) fits the following vehicles: 2016-2018 Honda Civic. Always verify your specific year, make, and model before ordering.
The 16 - 18 Honda Civic Sedan, excluding center exhaust Curt 1-1/4" Class 1 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 11604 (Part #5W-CHW-1737) fits 2016-2018 Honda Civic models. The 2018 model year is the last year covered by this part number. For newer models, check for an updated version.
Yes, the 16 - 18 Honda Civic Sedan, excluding center exhaust Curt 1-1/4" Class 1 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 11604 (Part #5W-CHW-1737) is designed to fit the 2016-2018 Honda Civic.
The 16 - 18 Honda Civic Sedan, excluding center exhaust Curt 1-1/4" Class 1 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 11604 (Part #5W-CHW-1737) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
CURT part number 11604 is designed for 2016-Present Honda Civic Sedan models. If your vehicle is a 2016 or newer Civic Sedan, this hitch is compatible. The manual does not specify compatibility with other body styles (coupe, hatchback) or earlier model years.
The CURT 11604 is rated for a maximum of 2000 lbs trailer weight and 200 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 than the hitch rating.
Non-trailer (wheel-less) loads applied to this hitch must be supported by CURT stabilizing straps part number 18050. Failure to properly support non-trailer loads will void the product warranty. Consult the CURT catalog or www.curtmfg.com for further information on the 18050 straps.
Required tools are: power drill, 1/4" drill bit, 1/2" drill bit, die grinder, ratchet, torque wrench, 11/16" socket, 6" socket extension, paint pen, and safety glasses. Drilling and hole enlargement are required, so a die grinder is essential.
The kit includes: 4× 7/16-14 UNC 1-1/4" Grade 8 carriage bolts (part 10-10281), 4× 7/16-14 UNC serrated flange nuts (part 20-00103), 4× 0.250 × 1.00 × 2.00" square hole spacers (part CM-SP7), and 4× 7/16" fishwires (part 7_16 FISHWIRE).
Two people may be required to ease 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.
Installation is rated as Moderate to Challenging difficulty. The installation requires drilling, die grinding, and the fishwire technique to route fasteners through the frame. Read all instructions thoroughly before beginning.
Yes, drilling is required. You must drill 4 holes in the frame rail: first with a 1/4" drill bit, then enlarge them with a 1/2" drill bit. Additionally, the 2 forward-most holes on each frame rail must be enlarged further using a die grinder.
Drill 4 holes in the frame rail: first use a 1/4" drill bit, then enlarge to 1/2" diameter. The 2 forward-most holes on each frame rail are then enlarged further using a die grinder to accommodate the fishwire technique.
The fishwire technique is used to route fasteners through the frame. Using the enlarged forward-most holes, you thread 7/16" carriage bolts and CM-SP7 spacers through the fishwires into the rear-most holes. This allows fasteners to be installed where direct access is not possible. See the fishwire diagram in the manual for visual guidance.
All fasteners must be torqued to 59 ft-lbs using a torque wrench with an 11/16" socket.
Four fasteners are used: 4× 7/16-14 UNC carriage bolts (part 10-10281) and 4× 7/16-14 UNC serrated flange nuts (part 20-00103). Each bolt is paired with a CM-SP7 spacer.
Fasteners should be loosely fastened in step 6 after the hitch is raised into position and fishwires are removed. They are then torqued to 59 ft-lbs in step 7 as the final step.
1. Mark 4 hole locations using the hitch as a template and a paint pen. 2. Drill holes with 1/4" bit, then enlarge to 1/2". 3. Use die grinder to enlarge the 2 forward-most holes on each frame rail. 4. Fishwire 2 carriage bolts and 2 spacers into rear-most holes. 5. Reverse fishwire 2 carriage bolts and 2 spacers into the frame. 6. Raise hitch into position, remove fishwires, and loosely fasten 4 flange nuts. 7. Torque all fasteners to 59 ft-lbs.
Periodically check the receiver hitch to ensure all fasteners are tight and all structural components are sound. This maintenance is important for safe operation.
Safety glasses must be worn at all times while installing this product. Using proper tools will greatly improve the quality of the install and reduce the time required.
The CURT 11604 is designed for use with ball mount part number 45521. Euro mount options are available: part 45571 (1 7/8" ball) and part 45572 (2" ball).
Yes, CURT part number 11604 is designed for 2016-Present Honda Civic Sedan models.
Maximum 2000 lbs trailer weight and 200 lbs tongue weight. Never exceed your vehicle manufacturer's recommended towing capacity.
Power drill, 1/4" and 1/2" drill bits, die grinder, ratchet, torque wrench, 11/16" socket, 6" socket extension, paint pen, and safety glasses. Drilling and die grinding are required.
Yes. Drill 4 holes with a 1/4" bit, enlarge to 1/2", then use a die grinder to enlarge the 2 forward-most holes further.
Torque all fasteners to 59 ft-lbs using a torque wrench and 11/16" socket.
Two people may be required. If hesitant, contact an authorized CURT installer or call technical support at 877-287-8634.
Safety glasses must be worn at all times during installation.
Non-trailer loads must be supported by CURT stabilizing straps part number 18050. Failure to do so voids the warranty.
Yes, the Curt 56396 custom wiring harness is designed for Honda Civic sedans. Verify your vehicle matches the application before purchasing.
The Curt 56396 is a custom wiring harness that connects your vehicle's electrical system to a trailer connector. It includes a converter box and a 4-flat connector for towing applications.
The package includes the custom wiring harness with yellow and green wire ends, a black converter box, a white ground wire with ring terminal and screw, a 4-flat connector, a 4-flat dust cover, double-sided tape for the converter box, cable ties, and sealant for the grommet.
The battery connection must be fuse-protected with a 10-amp maximum. Exceeding this rating can cause loss of warranty, overheating and potential fire.
Signal circuits are rated at 3.0 amps per side. Tail and running circuits are rated at 6.0 amps total. Do not exceed these ratings or the tow vehicle lamp load rating, whichever is lower.
Required tools are: ratchet, ratchet extension, 8mm socket, flat blade screwdriver, panel trim removal tool, wire stripper, wire crimper, and cutting tool.
The manual does not specify whether the battery must be disconnected. Consult your vehicle owner's manual or contact the vehicle manufacturer for guidance on safe electrical work procedures.
Drilling may be required. Step 9 instructs you to locate an existing screw with nut in the vehicle frame for the ground wire, or drill a 3/32" pilot hole if no suitable existing fastener is available. Before drilling, check for miscellaneous items hidden behind or under surfaces to avoid damage and personal injury.
Drill a 3/32" pilot hole if no existing screw with nut is available in the vehicle frame near the connector.
Yes. Locate the grommet behind the taillight where the vehicle taillight wiring passes through. Remove the grommet and cut a slit large enough to route the custom wiring harness through. After routing the harness, reseat the grommet and use the provided sealant to seal the cut and around all wires.
1. Open trunk and remove floor coverings and storage trays. 2. Remove scuff panel. 3. Remove driver side felt liner push fasteners. 4. Remove driver side taillight using two 8mm fasteners. 5. Disconnect taillight wiring connectors. 6. Remove grommet and cut slit for harness routing. 7. Route yellow wire end through grommet and insert between separated connectors. 8. Reseat grommet and seal with provided sealant. Reinstall taillight. 9. Secure white ground wire to vehicle frame. 10. Route green wire end to passenger side and repeat steps 3-8. 11. Adhere converter box inside vehicle. 12. Route battery power wire per included CME-PCL-INS sheet. 13. Route 4-flat connector to vehicle center when in use; store when not in use. 14. Reinstall all removed items and install 4-flat dust cover.
On the outside of the vehicle, locate the taillight. Remove the two 8mm fasteners securing the taillight in place. Gently pull the taillight rearward, taking care not to damage the alignment tabs on the back.
Locate the vehicle taillight wiring harness connectors behind the removed taillight. Separate the connectors from the taillight housing, taking care not to damage the locking tabs. Route the custom wiring harness end with the yellow wire through the grommet slit and insert it between the separated connectors. Make sure the connectors are fully inserted with locking tabs in place.
Locate a flat spot inside the vehicle near the taillight. Adhere the black converter box using the provided double-sided tape.
Locate a suitable grounding point near the connector, such as an existing screw with nut in the vehicle frame. If no existing fastener is available, drill a 3/32" pilot hole. The area should 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 hidden behind or under surfaces to avoid damage and personal injury.
Route the custom wiring harness end with the green wire down behind the interior side panel and out to the passenger side behind the removed scuff panel. Repeat steps 3-8 on the passenger side using the harness end with the green wire.
When not in use, roll up the 4-flat connector and store it in a convenient, out of the way location. 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 will function properly.
Do not exceed the product rating or tow vehicle lamp load rating, whichever is lower. Exceeding the product rating can cause loss of warranty, overheating and potential fire.
After installation, test for proper function by using a test light or connecting a properly wired trailer. Verify that all removed items have been reinstalled, the 4-flat dust cover is installed, and all loose wires are secured with cable ties.
Yes, the Curt 56396 is designed for Honda Civic sedans.
You need a ratchet, ratchet extension, 8mm socket, flat blade screwdriver, panel trim removal tool, wire stripper, wire crimper, and cutting tool.
The battery connection must be fuse-protected with a 10-amp maximum. Exceeding this can cause loss of warranty, overheating and potential fire.
Test for proper function by using a test light or connecting a properly wired trailer.
The package includes the wiring harness with yellow and green wire ends, converter box, ground wire with ring terminal and screw, 4-flat connector, dust cover, double-sided tape, cable ties, and sealant.
On Sale Today
Original price was $494.75. Current price is $489.66.You save $5.09
Free Shipping
Ships free on all orders





Quick Ship
In stock and ready to ship — order now!
FREE ShippingFREE SHIPPING
Estimated delivery Thu, Sep 10 - Sun, Sep 13
Order before 2 PM EST Monday–Friday for same-day processing
Guaranteed safe & secure checkout
No reviews have been added for this product.