CURT 56130 SMT Trailer Lighting Converter — 3-to-2-Wire Adapter with 4-Way Flat Socket, Compact Durable SMT

CURT 56130 SMT converter converts a vehicle's 3-wire taillight system into a 2-wire trailer-ready connection with a standard 4-way flat socket.

If your vehicle lacks a dedicated trailer connector, the CURT 56130 provides a practical splice-in solution that creates the needed trailer lighting circuits without tapping a battery or adding heavy flashers. Built with surface-mount technology (SMT) circuitry, this converter offers a compact, longer-lasting electrical interface that attaches directly to your vehicle's taillight wiring. It includes color-coded leads, snap-lock terminals and a rubber dust cover for the 4-pin socket, delivering a weather-resistant, installer-friendly option when a vehicle-specific harness isn't available.

How does this converter create a trailer wiring connection?

The CURT 56130 takes the vehicle's three-wire lighting signals and converts them into the conventional two-wire trailer output, then supplies them through a standard 4-way flat socket. Installation requires splicing the color-coded leads into the vehicle harness so signals are routed correctly to the trailer connector.

• Converts vehicle 3-wire system to 2-wire trailer wiring.
• Provides a standard 4-way flat female socket for trailer plug-in.
• Color-coded wires match signal and taillight circuits for accurate splicing.

What advantages does SMT (surface-mount technology) offer?

Surface-mount circuitry mounts components directly to the board surface, producing a smaller, more resilient module. SMT reduces electrical resistance and heat while improving long-term reliability compared with older through-hole components, making it well suited for automotive lighting converters.

• Lower resistance and heat generation for steadier signal delivery.
• Improved durability and longer lifecycle than through-hole assemblies.
• Compact design that fits tight mounting locations behind panels or near lamps.

How simple is installation and what parts are included?

The unit arrives ready to mount and splice, with snap-lock terminals that secure the spliced connections and reduce wiring movement. No heavy-duty flasher or battery tie-in is required; just match the color-coded leads to the vehicle circuits and mount the 4-way socket in a convenient location.

• Ready-to-install module with snap-lock wire connectors.
• Color-coded leads for signal (3.0 amp) and taillight (5.0 amp) circuits.
• Rubber dust cover protects the 4-pin connector when not in use.

Will this converter work with my vehicle and trailer lights?

This converter is intended for vehicles that use a 3-wire lighting output and trailers that accept a standard 2-wire feed via a 4-way flat plug. It offers a universal splice-in approach where a vehicle-specific harness is not provided by CURT, but verify your vehicle's wiring layout before installation.

• Designed for 3-wire vehicle systems needing a 2-wire trailer output.
• Suitable for standard trailer taillights, turn signals and brake lights using a 4-way flat plug.
• Not a replacement for vehicle-specific custom harnesses when those are available.

Who is this for: The CURT 56130 SMT converter is best for DIY installers, light-duty towing users and anyone who needs a reliable splice-in trailer connector but doesn’t have access to a vehicle-specific CURT wiring harness. It fits owners who want a compact, weather-resistant module with modern SMT reliability to power trailer lighting with minimal additional hardware.