MultiFunction Design and Compatibility This trailer wiring adapter lets you tow various trailers by connecting to a standard 7way RV blade socket while keeping your vehicle's existing 4way flat wiring intact. It supports universal installation for easy, flexible use across different vehicles and trailers. Weather Protection Designed with dust covers for both 4pin and 7pin sockets, this harness helps protect electrical connections from water and dust. The narrow wire harness minimizes exposure and adds an extra layer of protection for the wiring. Standard Connection The adapter provides an easy plugin on any standard 4way flat surface, enabling seamless operation of tail lights, brake lights, turn signals, reverse lights, trailer brakes, and auxiliary power sources with minimal splicing required. Easy Installation Simply insert this dual output 4pin to 7pin trailer adapter wiring into your vehicle or trailer line with minimal splicing. A mounting bracket is included for quick and secure attachment to your trailer or bumper. Use scenarios Upgrading an older pickup with 4pin wiring to tow a modern trailer that uses a 7pin RV style connector, without removing or reworking the existing 4pin harness. Maintaining flexibility in a small fleet by allowing quick switching between 4pin and 7pin configurations on different trailers, reducing downtime and wiring changes. Tow a trailer that requires 7way functionality for lights, brakes, and auxiliary power, while still preserving compatibility with vehicles that supply only a 4pin harness. Key benefits at a glance Enables 7way RV blade compatibility without discarding 4way wiring Protects connections with builtin dust covers for 4pin and 7pin sockets Minimal splicing required for straightforward installation Mounting bracket included for secure attachment to trailer or bumper Suitable for multiple trailer types and common lighting circuits including tail, brake, turn, reverse, brakes, and auxiliary power