The CURT Dual Output Adapter is an electrical device that allows a connection to be made between a mismatched trailer plug and vehicle socket. This special dual-output electrical adapter is designed to adapt a 4-way flat vehicle socket to fit multiple trailer plugs, including a 4-way flat and a 7-way RV blade connector. Some manual wiring is required. This multipurpose socket also comes with dust covers, a mounting bracket, and all necessary mounting hardware for a complete installation.• Adapts a 4-way flat socket to fit 4-way flat and 7-way RV blade trailer plugs• 4-way flat output connects tail lights, brake lights, and turn signals• 7-way connects tail, brake, reverse, turn signals, brakes, and auxiliary power• Dust covers included to keep connectors clean when not in use• Slit loom keeps wires contained and well protected• Metal bracket securely mounts wiring to the vehicle or trailer hitchNOTE: Some manual wiring required. Slit loom keeps wires contained & well protected Metal bracket securely mounts wiring to the vehicle or trailer hitch NOTE: Some manual wiring is required | Curt Dual Output Electrical Adapter, Adds 7-Way Blade to 4-Way Flat