JavaScript seems to be disabled in your browser. For the best experience on our site, hookup sure to turn on Javascript in your browser. Any vehicle towing a trailer requires a trailer wiring harness to safely connect the taillights, turn signals, brake lights and other necessary electrical systems. If your vehicle is not equipped with working trailer wiring, there are a number of different solutions to provide the perfect fit for your specific vehicle.
Complete with a color coded trailer wiring diagram of each plug typethis guide walks through each available solution, including custom online dating humor, splice-in wiring and replacement wiring.
Trailer you're looking to replace the wiring on your trailer, check out our trailer rewiring guide. Custom wiring. Vehicle-specific plug-and-play harness that requires no splicing and provides a standard trailer connector. Splice-in wiring. Taillight converter that "wire" into your existing vehicle wiring and provides a standard trailer connector. Replacement plugs and sockets.
First, Make Sure You Have All the Essential Parts Needed for a Working Trailer Light System
Custom wiring is the ideal solution for installing trailer light wiring on your vehicle. A custom wiring harness or 'T-connector' is a vehicle-specific harness that plugs in without "hookup" spicing required and provides a standard connector output, such as a 4-way flat.
All CURT custom wiring comes with the exact components needed for a complete installation on the vehicle, including vehicle-specific plugs and an electrical converter, if needed. A custom wiring harness has multiple plugs that are used to 'T' into the vehicle's taillight assembly, drawing power directly from the taillights or from a direct battery connection and providing a standard trailer light wiring connector.
While custom wiring harnesses usually require two or more connection points, splicing and soldering are still not needed. While some vehicles may not be equipped with a standard trailer wiring connector, they may have a special socket specifically intended for installing wiring, provided by the vehicle manufacturer.
A custom wiring connector uses a single plug to plug into this factory socket and provide a standard reviews nyc speed dating wiring connector. Like a T-connector, an original equipment wiring harness plugs into the USCAR socket without any cutting, splicing or soldering required, and it provides a standard trailer wiring output, such as a 4-way flat or 7-way RV blade.
If custom wiring is not available for your particular make and model, a taillight converter may be required to equip your vehicle with the proper trailer light wiring connection. A taillight converter or electrical converter splices into your vehicle and provides a standard trailer plug wiring connector, typically a 4-way flat. The converter converts the vehicle's complex wiring system to be compatible with your trailer's simple wiring system.
To learn more about wire wiring systems, check out our vehicle wiring systems guide. If the trailer plug wiring on your vehicle or trailer is damaged or not working correctly, you can replace the connector with a CURT splice-in plug or socket.
Plugs trailer side and sockets vehicle side are available in all standard formats and can be spliced into your existing trailer plug wiring.
Trailer Wiring
Find the trailer light wiring diagram below that corresponds to your existing configuration. If you are rewiring your trailer completely, check out our trailer rewiring guide. Following the standard method for wiring a trailer connector is vital to the safety of your vehicle while towing. Connecting the wrong color wires will result in mismatched taillight functions and confusion on the road.
Note: The ground wire color for a 4-flat plug is white and should be properly grounded at the trailer tongue. Read the complete rewiring guide for more. The 7-way round trailer plug is to be distinguished from 7-way RV blade plugs.
The wiring connections and placement are different. The SAE configuration of a 7-way RV blade plug should not be confused with the traditional configuration. Different wire colors are used for different functions. Note: Not all trailers are equipped with reverse lights yellow wire.
The position of this wire may vary for your own specific setup. Note: The ground wire color on all trailer plug types is always white.
Other colors vary in function, depending on the configuration.
Equipping Your Vehicle with Proper Trailer Wiring
Download complete table. The traditional 7-way RV blade format is typically used hookup 5th wheel trailers, travel trailers and campers. The trailer wiring colors for this configuration are different than those on the SAE configuration. The SAE J 7-way RV blade format is typically used on gooseneck trailers, utility trailers, cargo trailers and equipment trailers. Trailers are equipped with different plug types based on their electrical components.
The chart below provides examples of common trailers and the types of plugs they typically use. Learn more about different trailer types here.
Refer to the wiring hookup above for functions of trailer wiring colors. Discover more great tips and how-tos on the Lippert blog -- your destination for all things RVing, towing, boating and beyond! The store will not work correctly when cookies are disabled. Your account has been temporarily trailer, so no orders can be placed at this time. Please contact our accounts read more department at or email accountsreceivable curtgroup.
Equipping Your Vehicle with Proper Trailer Wiring Any vehicle towing a trailer requires a trailer wiring harness to safely connect the taillights, turn signals, brake lights and other necessary electrical systems. View Trailer Wiring Diagrams Here! Custom wiring Vehicle-specific plug-and-play harness that requires no splicing and provides a standard trailer connector.
Splice-in wiring Taillight converter that splices into your existing vehicle wiring and provides a standard trailer connector. Replacement plugs and sockets Trailer plugs and vehicle sockets to splice in and replace damaged wiring connectors.
Option A: Custom Wiring Installation Custom wiring is the ideal solution for installing trailer light wiring on your vehicle. Custom Wiring Harnesses A custom wiring harness has multiple plugs that are used to 'T' into the vehicle's taillight assembly, drawing power directly from the taillights or from a direct battery connection and providing a standard trailer light wiring connector. Custom Wiring Connectors While some vehicles may not be equipped with a trailer trailer wiring connector, they may have wire special socket specifically intended for installing wiring, provided by the vehicle manufacturer.
Find Custom Wiring. Option B: Taillight Converter Splice-in Wiring If custom wiring is not available for your particular make and model, a trailer converter may be required to equip your vehicle with the proper trailer light wiring connection.
Shop Splice-in Converters. Option C: Replacement Vehicle and Trailer Plug Wiring If the trailer plug wiring on your vehicle or trailer is damaged or not working correctly, you can replace the connector with a CURT splice-in plug or socket.
Use this 4-pin wiring diagram to properly wire your 4-wire trailer plug. Not all trailers have reverse lights, so consider wire own trailer as you wire in a 5-way plug. Be sure to review your own trailer connector before wiring. Review your own trailer before wiring. Use this 7-pin trailer wiring diagram to properly wire your 7-pin trailer plug.
Differences in 7-Pin Trailer Wiring Traditional configuration The traditional 7-way RV blade format is typically used on 5th wheel trailers, travel trailers and campers. Find Wiring for My Vehicle. Trailer Type Common Connector Type Alternative Connector Types Utility trailer 4-way flat 6-way round 7-way RV blade Boat trailer without surge brakes 4-way flat 7-way RV blade rarely used Boat trailer with surge sainte onlyfans 5-way flat 6-way round 7-way RV blade Hookup up camper 6-way square 6-way round Travel trailer 7-way RV blade 6-way round 7-way round 5th wheel trailer 7-way RV blade 6-way round Gooseneck trailer 6-way round 7-way RV blade Learn more about different trailer types here.
Chapter 1: Intro - Where do I start? Chapter 2: What do I need for towing? Chapter 3: What types of hitches are there? Chapter 4: What's my towing capacity? Chapter 5: How do I select a hitch? Chapter 6: How do I install a hitch? Chapter 7: How do I install trailer wiring?
4-Pin Flat Connector
Chapter 8: How do Hookup use a brake controller? Chapter 9: How do I hook up my trailer? Chapter What do I need to dinghy tow? Trailer Type. Common Connector Type. Alternative Connector Types. Utility trailer. Boat wire without surge brakes. Boat trailer with surge trailer. Pop up dating wheelchair. Travel trailer. Gooseneck trailer.