For 2020‑2024 Jeep Wrangler JL Trailer Wiring 7 Way Trailer Wiring Plug w/ Bracket Fits All Models Curt
Model: 56407 57672 51500 58361-CW2540This Wiring 7-Way + Bracket Fits The Following Vehicles:
2020 - 2024 Jeep Wrangler JL All Models
This Wiring 7-Way + Bracket Includes the Following Parts:
- Custom Wiring Harness, 4-Way Flat Output (Plug & Play)
- Dual-Output Electrical Adapter (Adds 7-Way RV Blade to 4-Way Flat)
- Trailer Brake Controller Wiring Kit (duplex undercar wires, circuit breakers, terminals & ring connectors)
- 30-Amp Universal Circuit Breaker
- Installation instructions, schematics, diagrams, and hardware (if required).
List of Fitment Years:
2020, 2021, 2022, 2023, 2024
CURT 56407 Vehicle-Side Custom 4-Pin Trailer Wiring Harness
Manufactured by: Curt
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 Jeep Wrangler JL and Jeep Gladiator (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..
Features:
- Plugs into vehicle tail light assembly to provide a 4-way flat socket
- Simple plug-and-play design eliminates the need for cutting or splicing
- 4-way flat output connects tail lights, brake lights and turn signals
- Equipped with tail light converter for vehicle-trailer compatibility
- Constructed with SMT circuitry for better performance and durability
- Dust cover included to keep connector clean when not in use
- Backed by a limited one-year warranty
CURT 57672 Dual-Output 4-Way Flat Vehicle-Side to 7-Way RV Blade Trailer Wiring Adapter
Manufactured by: Curt
There are several different types of connectors used to supply power from a tow vehicle's electrical system to a trailer's wiring system Some trailers only need the bare essentials -- running lights, brake lights and turn signals -- while others require a connection for reverse lights, electric brakes and auxiliary power With connectors ranging from simple to complex, it may be the case that the connection between your vehicle and your trailer is not a perfect match.
For example, your truck may be equipped with a 6-way round socket, but your trailer may have a 4-way flat plug For this very common problem, CURT offers a quick and simple solution in the form of an electrical adapter An adapter is an electrical device that allows a connection to be made between a mismatched trailer plug and vehicle socket.
It easily plugs in your vehicle's electrical socket and usually requires no additional wiring CURT offers an array of adapters to accommodate most types of plugs and sockets, including 4-way flat, 4-way round, 5-way flat, 6-way round, 7-way RV blades and more This special dual-output electrical adapter is actually designed to adapt a 4-way flat vehicle socket to fit multiple trailer plugs, including a 4-way flat and a 7-way RV blade connector.
Some manual wiring is required This multipurpose socket also comes with dust covers, a mounting bracket and all necessary mounting hardware for a complete installation All CURT wiring and electrical products come with a one-year limited warranty to give you the assurance you need to tow with confidence..
Features:
- Adapts a 4-way flat socket to fit 4-way flat and 7-way RV blade trailer plugs
- 4-way flat output connects tail lights, brake lights and turn signals
- 7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power
- Dust covers included to keep connectors clean when not in use
- Slit loom keeps wires contained and well protected
- Metal bracket securely mounts wiring to the vehicle or trailer hitch
CURT 51500 Electric Trailer Brake Controller Wiring Kit
Manufactured by: Curt
It takes a lot of power to stop a moving trailer, especially when that trailer is hauling livestock, construction materials, industrial equipment or other heavy-duty cargo Play it safe when you tow and give your trailer brakes the control they need with a CURT trailer brake controller and brake controller harness This brake controller wiring kit is designed for vehicles that do not have an included towing prep package.
It includes cables, ring terminals, cable ties and a circuit breaker to splice into your vehicle's wiring system and allow installation of a CURT trailer brake controller This wiring kit is compatible with systems with up to eight brakes..
Features:
- For tow vehicles not equipped with factory tow package wiring
- Compatible with 2, 4, 6 or 8-brake systems (1-4 axles)
- Designed for use with CURT quick plugs #51515 or #51516
- Brake controller and trailer connector are not included
CURT 58361 30-Amp Universal Circuit Breaker
Manufactured by: Curt
Whether you're a contractor on your way to the jobsite or just a casual fisherman heading to the boat landing, you need working trailer lights to tow safely and legally For any towing setup, CURT offers quality wiring components, including complete wiring kits, circuit breakers, wiring connectors and more This universal circuit breaker is rated for 30 amps and recommended for applications where over-current protection is required..
Features:
- Recommended for applications where over-current protection is required
Hitches Near Me: We operate out of several warehouses across the country, ensuring faster delivery to your location.
$189 99 $250.80 24% OFF
- Best Price on Web Guarantee
- Fastest Shipping
- FREE Shipping
- In Stock
We match lower prices from major authorized retailers for brand-new products in original packaging, provided the item is in stock. The competing seller must be an authorized, professional retail business; offers from
individuals, auctions, peer-to-peer sites, or unauthorized sellers don’t qualify. Used, refurbished, or open-box items are excluded.
Please see our full terms for details.
Each may be shipped from a separate location, and therefore, may arrive at different times
Verify Fitment
$250.80 $189 99
Learn more
Questions? Call our Auto Experts at (877) 869-6690
Get it now, pay later
Select installments at checkout to split your purchase into 4 interest-free payments of $47.25 every 2 weeks.
- No fees, ever.
- No impact on your credit score.
Payment options are offered by Affirm and are subject to an eligibility check and might not be available in all states. CA Residents: Loans by Affirm Loan Services, LLC are made or arranged pursuant to a California Finance Lender license.
Installments in partnership with
.
Affirm and its offerings are supported in English only. Translations are not provided by Affirm.
Product Details
- Brand: Curt
- Model: 56407 57672 51500 58361-CW2540
- Includes: Custom Wiring Harness, Dual-Output Electrical Adapter, Trailer Brake Controller Wiring Kit, 30-Amp Universal Circuit Breaker
Compatibility Chart
Get Expert Help
For 2020-2024 Jeep Wrangler JL Trailer Wiring 7 Way Trailer Wiring Plug w/ Bracket Fits All Models Curt Install Notes
Installation Instructions for Jeep Wrangler and Gladiator
Part Numbers:
- 56407
Wiring Access Locations:
- SUVs and Vans:
- S1: Behind driver-side taillight housing
- S2: Behind passenger-side taillight housing
- Trucks:
- T1: Behind driver-side taillight housing
- T2: Behind passenger-side taillight housing
Tools Required:
- Ratchet
- Ratchet extension
- Torx bit (T-30)
- Wire stripper
- Wire crimper
- Flat blade screwdriver
- Cutting tool
- Fish wire
Step-by-Step Instructions:
Jeep Wrangler
Step 1: Disconnect the Battery
- Locate the vehicle battery and disconnect the negative terminal.
- Secure the negative wire away from the battery.
Step 2: Access the Trim Panel
- Open the tailgate.
- Use a flat blade screwdriver to remove the trim access cover on the rear corner of the vehicle.
Step 3: Remove the Taillight
- Remove the fastener securing the taillight using a T-30 Torx bit.
- Carefully pull the taillight straight back and disconnect the wiring harness.
- Repeat this step on the passenger side.
Step 4: Install the Custom Wiring Harness
- On the driver side, connect the yellow wire of the custom wiring harness to the factory wiring harness.
- Ensure all connectors are fully seated and the locking tabs are secure.
Step 5: Mount the Converter Box
- Select a clean, flat surface away from debris and spray.
- Use the provided double-sided tape to adhere the black converter box.
- Secure the white ground wire to the vehicle frame using the provided screw.
Step 6: Route Green Wire and 4-Flat Connector
- Route the green wire and 4-flat connector down and along the vehicle frame to the passenger side.
- Secure all wires using the provided cable ties.
Step 7: Connect Passenger-Side Wiring
- Insert the green wire of the custom wiring harness into the passenger-side factory wiring harness.
- Verify that the connectors are secure with locking tabs in place.
Step 8: Route and Secure Power Wire
- Route the black power wire from the battery to the wiring harness, avoiding pinch points, heat, and rotating components.
- Attach the ring terminal to the positive terminal of the battery.
Step 9: Test the System
- Reconnect the negative battery terminal.
- Test the wiring with a test light or trailer to confirm functionality.
Step 10: Reinstall Components
- Reinstall the taillights and trim panels removed earlier.
- Secure any loose wires using cable ties.
- Attach the provided 4-flat dust cover to prevent corrosion.
Jeep Gladiator
Step 1: Disconnect the Battery
- Locate the vehicle battery and disconnect the negative terminal.
- Secure the negative wire away from the battery.
Step 2: Remove Taillight Bolts
- Open the tailgate.
- Use an 8mm socket to remove the bolts securing the taillights.
Step 3: Remove the Taillight
- Carefully pull the taillight straight back and disconnect the wiring harness.
- Repeat this step on the passenger side.
Step 4: Install the Custom Wiring Harness
- On the driver side, connect the yellow wire of the custom wiring harness to the factory wiring harness.
- Ensure all connectors are fully seated and the locking tabs are secure.
Step 5: Mount the Converter Box
- Select a clean, flat surface away from debris and spray.
- Use the provided double-sided tape to adhere the black converter box.
- Secure the white ground wire to the vehicle frame using the provided screw.
Step 6: Route Green Wire and 4-Flat Connector
- Route the green wire and 4-flat connector down and along the vehicle frame to the passenger side.
- Secure all wires using the provided cable ties.
Step 7: Connect Passenger-Side Wiring
- Insert the green wire of the custom wiring harness into the passenger-side factory wiring harness.
- Verify that the connectors are secure with locking tabs in place.
Step 8: Route and Secure Power Wire
- Route the black power wire from the battery to the wiring harness, avoiding pinch points, heat, and rotating components.
- Attach the ring terminal to the positive terminal of the battery.
Step 9: Test the System
- Reconnect the negative battery terminal.
- Test the wiring with a test light or trailer to confirm functionality.
Step 10: Reinstall Components
- Reinstall the taillights and trim panels removed earlier.
- Secure any loose wires using cable ties.
- Attach the provided 4-flat dust cover to prevent corrosion.
Safety Notes:
- Do not exceed the product rating or the tow vehicle lamp load rating.
- Ensure the battery connection is fuse-protected (10-amp max).
- Avoid drilling into hidden areas to prevent damage or injury.
Specifications:
- Signal circuits: 3.0 amps per side
- Tail/running circuits: 6.0 amps total
- Compatible with 12-volt negative ground systems
Installation Instructions for Vehicle Models
Part Numbers:
- 56407
Wiring Access Locations:
- SUVs and Vans:
- S1: Behind driver-side taillight housing
- S2: Behind passenger-side taillight housing
- Trucks:
- T1: Behind driver-side taillight housing
- T2: Behind passenger-side taillight housing
Tools Required:
- Ratchet
- Ratchet extension
- Torx bit (T-30)
- Wire stripper
- Wire crimper
- Flat blade screwdriver
- Cutting tool
- Fish wire
Step-by-Step Instructions:
Jeep Wrangler
Step 1: Disconnect the Battery
- Locate the vehicle battery and disconnect the negative terminal.
- Secure the negative wire away from the battery.
Step 2: Access the Trim Panel
- Open the tailgate.
- Use a flat blade screwdriver to remove the trim access cover on the rear corner of the vehicle.
Step 3: Remove the Taillight
- Remove the fastener securing the taillight using a T-30 Torx bit.
- Carefully pull the taillight straight back and disconnect the wiring harness.
- Repeat this step on the passenger side.
Step 4: Install the Custom Wiring Harness
- On the driver side, connect the yellow wire of the custom wiring harness to the factory wiring harness.
- Ensure all connectors are fully seated and the locking tabs are secure.
Step 5: Mount the Converter Box
- Select a clean, flat surface away from debris and spray.
- Use the provided double-sided tape to adhere the black converter box.
- Secure the white ground wire to the vehicle frame using the provided screw.
Step 6: Route Green Wire and 4-Flat Connector
- Route the green wire and 4-flat connector down and along the vehicle frame to the passenger side.
- Secure all wires using the provided cable ties.
Step 7: Connect Passenger-Side Wiring
- Insert the green wire of the custom wiring harness into the passenger-side factory wiring harness.
- Verify that the connectors are secure with locking tabs in place.
Step 8: Route and Secure Power Wire
- Route the black power wire from the battery to the wiring harness, avoiding pinch points, heat, and rotating components.
- Attach the ring terminal to the positive terminal of the battery.
Step 9: Test the System
- Reconnect the negative battery terminal.
- Test the wiring with a test light or trailer to confirm functionality.
Step 10: Reinstall Components
- Reinstall the taillights and trim panels removed earlier.
- Secure any loose wires using cable ties.
- Attach the provided 4-flat dust cover to prevent corrosion.
Jeep Gladiator
Step 1: Disconnect the Battery
- Locate the vehicle battery and disconnect the negative terminal.
- Secure the negative wire away from the battery.
Step 2: Remove Taillight Bolts
- Open the tailgate.
- Use an 8mm socket to remove the bolts securing the taillights.
Step 3: Remove the Taillight
- Carefully pull the taillight straight back and disconnect the wiring harness.
- Repeat this step on the passenger side.
Step 4: Install the Custom Wiring Harness
- On the driver side, connect the yellow wire of the custom wiring harness to the factory wiring harness.
- Ensure all connectors are fully seated and the locking tabs are secure.
Step 5: Mount the Converter Box
- Select a clean, flat surface away from debris and spray.
- Use the provided double-sided tape to adhere the black converter box.
- Secure the white ground wire to the vehicle frame using the provided screw.
Step 6: Route Green Wire and 4-Flat Connector
- Route the green wire and 4-flat connector down and along the vehicle frame to the passenger side.
- Secure all wires using the provided cable ties.
Step 7: Connect Passenger-Side Wiring
- Insert the green wire of the custom wiring harness into the passenger-side factory wiring harness.
- Verify that the connectors are secure with locking tabs in place.
Step 8: Route and Secure Power Wire
- Route the black power wire from the battery to the wiring harness, avoiding pinch points, heat, and rotating components.
- Attach the ring terminal to the positive terminal of the battery.
Step 9: Test the System
- Reconnect the negative battery terminal.
- Test the wiring with a test light or trailer to confirm functionality.
Step 10: Reinstall Components
- Reinstall the taillights and trim panels removed earlier.
- Secure any loose wires using cable ties.
- Attach the provided 4-flat dust cover to prevent corrosion.
Safety Notes:
- Do not exceed the product rating or the tow vehicle lamp load rating.
- Ensure the battery connection is fuse-protected (10-amp max).
- Avoid drilling into hidden areas to prevent damage or injury.
Specifications:
- Signal circuits: 3.0 amps per side
- Tail/running circuits: 6.0 amps total
- Compatible with 12-volt negative ground systems
Additional Information:
- Attention: This is a summary of the installation procedure. For complete installation instructions, including diagrams and detailed information from the manufacturer, please download the full installation PDF.
Technical Support:
- For technical support and assistance, our team of experts is available to help. You can reach our tech support by visiting www.trailerjacks.com or calling 877-869-6690.
Warranty Information:
- For complete warranty instructions, please download the full installation PDF.
Installation Instructions for 4-Way to 7-Way Adapter and Brake Control Wiring
Tools Required:
- Phillips Head Screwdriver
- Drill with 3/32" Drill Bit
- 10mm Socket & Ratchet or Wrench
- Wire Crimpers
- Wire Cutters
- Test Light or Multimeter
- Cable Ties
Part 1: Install the 4-Way to 7-Way Adapter
Step-by-Step Instructions:
-
Mount the Adapter:
- Choose a suitable mounting point on the vehicle, typically near the hitch.
- Use the provided bracket and screws to secure the adapter.
-
Connect the 4-Flat Plug:
- Plug the 4-flat connector on the adapter into the existing 4-flat plug on the vehicle.
- This connection enables tail lights, left turn, and right turn signals.
-
Ground the Adapter:
- Locate a clean, solid grounding point near the adapter.
- Drill a 3/32" hole if necessary and secure the white ground wire from the adapter using the provided screw and eyelet.
-
Leave Additional Wires Disconnected:
- The following wires will remain disconnected until Part 2:
- Black Wire: Power from the battery.
- Blue Wire: Brake control output.
- Yellow Wire: Reverse light (optional; leave disconnected unless needed).
- The following wires will remain disconnected until Part 2:
-
Test Initial Connection:
- Use a test light or trailer to verify functionality of the 4-way connections (tail lights, turn signals).
Part 2: Install Brake Control Wiring
Step-by-Step Instructions:
-
Mount Circuit Breakers:
- Install two 30A circuit breakers on the firewall or another suitable location near the battery.
- Use self-tapping screws to mount them securely.
-
Route Power Wires:
- Connect the black 12-gauge wire from the 7-way adapter to the auxiliary side of one circuit breaker (this powers the 7-way socket).
- Run a heavy-gauge wire from the battery's positive terminal to the battery side of this circuit breaker, using a ring terminal.
- Run another heavy-gauge wire from the battery's positive terminal to the auxiliary side of the second circuit breaker (for the brake controller).
-
Install the Brake Controller:
- Mount the brake controller under the dash on a firm surface.
- Use the following connections:
- Red Wire: Connect to the cold side of the brake switch (active only when the brake pedal is pressed).
- Blue Wire: Connect to the blue wire on the 7-way adapter for trailer brakes.
- White Wire: Connect to a solid ground point on the vehicle body.
- Black Wire: Connect to the auxiliary side of the second 30A circuit breaker (provides power to the brake controller).
-
Optional: Connect Reverse Light Circuit:
- If the trailer has a reverse light circuit, connect the yellow wire from the 7-way adapter to the vehicle’s reverse light circuit.
-
Reconnect the Battery:
- Reattach the negative battery cable and ensure all connections are secure.
- Insert the fuses into both circuit breakers.
-
Secure All Wires:
- Use cable ties to secure all loose wires and prevent damage or rattling.
-
Test the System:
- Verify functionality of all circuits (running lights, turn signals, brake lights, and brake controller output).
- If applicable, test the reverse light circuit.
Notes:
- Most installations will only require connecting the black and blue wires from the 7-way adapter.
- Leave the yellow wire disconnected unless the trailer has a reverse light or surge brake lockout circuit.
- Always adhere to safety guidelines and verify all connections before use.
Warning: Incorrect wiring can cause damage to the vehicle or trailer. Test all connections carefully before use.
Installation Instructions for 4-Way to 7-Way Adapter and Brake Control Wiring
Tools Required:
- Phillips Head Screwdriver
- Drill with 3/32" Drill Bit
- 10mm Socket & Ratchet or Wrench
- Wire Crimpers
- Wire Cutters
- Test Light or Multimeter
- Cable Ties
Part 1: Install the 4-Way to 7-Way Adapter
Step-by-Step Instructions:
-
Mount the Adapter:
- Choose a suitable mounting point on the vehicle, typically near the hitch.
- Use the provided bracket and screws to secure the adapter.
-
Connect the 4-Flat Plug:
- Plug the 4-flat connector on the adapter into the existing 4-flat plug on the vehicle.
- This connection enables tail lights, left turn, and right turn signals.
-
Ground the Adapter:
- Locate a clean, solid grounding point near the adapter.
- Drill a 3/32" hole if necessary and secure the white ground wire from the adapter using the provided screw and eyelet.
-
Leave Additional Wires Disconnected:
- The following wires will remain disconnected until Part 2:
- Black Wire: Power from the battery.
- Blue Wire: Brake control output.
- Yellow Wire: Reverse light (optional; leave disconnected unless needed).
- The following wires will remain disconnected until Part 2:
-
Test Initial Connection:
- Use a test light or trailer to verify functionality of the 4-way connections (tail lights, turn signals).
Part 2: Install Brake Control Wiring
Step-by-Step Instructions:
-
Mount Circuit Breakers:
- Install two 30A circuit breakers on the firewall or another suitable location near the battery.
- Use self-tapping screws to mount them securely.
-
Route Power Wires:
- Connect the black 12-gauge wire from the 7-way adapter to the auxiliary side of one circuit breaker (this powers the 7-way socket).
- Run a heavy-gauge wire from the battery's positive terminal to the battery side of this circuit breaker, using a ring terminal.
- Run another heavy-gauge wire from the battery's positive terminal to the auxiliary side of the second circuit breaker (for the brake controller).
-
Install the Brake Controller:
- Mount the brake controller under the dash on a firm surface.
- Use the following connections:
- Red Wire: Connect to the cold side of the brake switch (active only when the brake pedal is pressed).
- Blue Wire: Connect to the blue wire on the 7-way adapter for trailer brakes.
- White Wire: Connect to a solid ground point on the vehicle body.
- Black Wire: Connect to the auxiliary side of the second 30A circuit breaker (provides power to the brake controller).
-
Optional: Connect Reverse Light Circuit:
- If the trailer has a reverse light circuit, connect the yellow wire from the 7-way adapter to the vehicle’s reverse light circuit.
-
Reconnect the Battery:
- Reattach the negative battery cable and ensure all connections are secure.
- Insert the fuses into both circuit breakers.
-
Secure All Wires:
- Use cable ties to secure all loose wires and prevent damage or rattling.
-
Test the System:
- Verify functionality of all circuits (running lights, turn signals, brake lights, and brake controller output).
- If applicable, test the reverse light circuit.
Notes:
- Most installations will only require connecting the black and blue wires from the 7-way adapter.
- Leave the yellow wire disconnected unless the trailer has a reverse light or surge brake lockout circuit.
- Always adhere to safety guidelines and verify all connections before use.
Warning: Incorrect wiring can cause damage to the vehicle or trailer. Test all connections carefully before use.
Attention:
This is a summary of the installation procedure. For complete installation instructions, including diagrams and detailed information from the manufacturer, please download the full installation PDF.
Warranty Information:
For complete warranty instructions, please download the full installation PDF.
Technical Support:
For technical support and assistance, our team of experts is available to help. You can reach our tech support by visiting www.trailerjacks.com or calling 877-869-6690.
People Also Bought
