ITEM NAME:4 Pin Trailer Adapter Wire Harness Plug Exterior Flat Connector Wishbone Style Trailer Wire Extension 4-Way Pin Plug Flat Trailer Wiring Harness Extender Features: Splices into wiring to provide a connection for a trailer plug. 4-way flat connects tail lights brake lights and turn signals. Constructed copper core wires and durable engineering plastic. Features 36 inches of color-coded wire for easier installation. Designed for use on vehicles and trailers two-wire systems. Specifications: Model: T24509 Type: Plug Shape: Flat round Production Process: Injection molding Features: Waterproof Contact Material: Copper Insulator Material: Engineering plastic Number of Cores: 4 Number of Stitches: 4 Voltage Output: 12V (US) Product Line Length: 36 inches Product Size: Approx. 96×3cm Main Function: Connecting truck and power supply, suitable for trailer signal display Applications: Commercial vehicles / semi-trailers / trailers etc Package Included: 1 x 4-Pin Trailer Light Wiring Harness Extension Flat Connector Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement..Trailer Wire Extension 4-Way Pin Plug Flat Trailer Wiring Harness Extender. 1 x 4-Pin Trailer Light Wiring Harness Extension Flat Connector. Splices into wiring to provide a connection for a trailer plug.