Install a 4-way flat on your vehicle with this splice-in harness. Powered converter connects directly to battery to reduce strain on wiring. Potted, SMT construction boosts water and vibration resistance. Works with 2-wire, 3-wire, and PWM systems.

This multi-function, vehicle-end connector converts any 4-way flat, vehicle-end plug to a combination 7-way outlet and 4-pole flat outlet. Features an integrated backup alarm.

Install a 4-way flat on your vehicle with this splice-in harness. Kit includes the necessary wiring to connect the module to your car battery for power. SMT construction ensures superior performance. Works with 2-wire and 3-wire systems.

Replace your USCAR-equipped vehicle''s OEM trailer connector with this dual-output connector. Features 7-way outlet and 4-pole flat outlet. Plugs into USCAR socket.

Install a 4-way trailer connector on your vehicle with this wiring harness with tail light converter. Harness splices into existing wiring. SMT construction ensures superior performance.

This universal wiring kit lets you install an electric brake controller (sold separately) in your vehicle and a 7-way connector for your trailer lights at the same time. Plugs into the existing 4-way on your vehicle.

Easily mount this 4-way flat trailer connector to your vehicle's hitch or bumper with the included bracket. Quick-splice wire taps let you splice harness into your vehicle's wiring. Bonded wires are color coded for easier installation.

This circuit tester plugs into the 7-way connector on your vehicle. LED lights indicate which functions (brake, turn, tail, stop, reverse, electric brakes, and 12V) are properly working. Color-coded LEDs make it easy to distinguish each signal.

This circuit tester plugs into the 7-way connector on your vehicle. LED lights indicate which functions (brake, turn, tail, stop, reverse, electric brakes, and 12V) are properly working.

Curt 7-way connector to 4-way or 5-way flat connector is designed for use on vehicles with Trailer Lamp-Out sensors when towing a trailer equipped with LED lights.

This multi-function, vehicle-end connector converts any 4-way flat, vehicle-end plug to a combination 7-way outlet and 4-pole flat outlet.

This 7-pole, RV-style trailer connector hardwires to your vehicle and accepts the 7-way plug on your trailer to power your trailer's signal lights.

Quick-splice wire taps let you splice this 4-way flat trailer connector into your vehicle. Bonded wires are color coded to make installation a little easier.

This adapter lets you span 5' to connect your 7-way, RV-style, vehicle-end connector to the 4-way flat connector on your trailer. Coiled cord ensures that wires won't drag on the ground. Molded construction is durable and corrosion resistant.

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.

This 7-pole, RV-style trailer connector hardwires to your trailer and plugs into the 7-way on your tow vehicle to power your trailer's signal lights.

Install a 4-way trailer connector on your vehicle with this wiring harness with tail light converter. Requires splicing into existing vehicle wiring. Works with domestic and import vehicles. Includes wire taps.

Install a 4-way flat on your vehicle with this splice-in harness. Potted, SMT construction boosts water and vibration resistance. Works with 2-wire, 3-wire, and PWM systems. Requires wiring kit (C55152 - sold separately) to connect to battery.

Replace your Ford's or GM's OEM connector with this multi-function, vehicle-end connector. Features 7-way outlet, 4-pole flat outlet and an integrated backup alarm.

Replace your Dodge's OEM connector with this multi-function, vehicle-end connector. Features 7-way outlet, 4-pole flat outlet and an integrated backup alarm.

Wire your vehicle to tow a trailer with this universal, splice-in wiring kit. Includes 5-way flat connector, bonded wire, mounting bracket, and necessary hardware. Designed for use with 2-wire electrical systems.

This adapter lets you span 5' to connect your 7-way, RV-style, vehicle-end connector to the 5-way flat connector on your trailer. Coiled cord ensures that wires won't drag on the ground. Molded construction is durable and corrosion resistant.