RV Pigtails 20020 4-Way Flat To 7-Way Round Blade Socket Adapter - 9"

This is a 4-way flat to 7-way round blade socket adapter at 9 inches. It converts your vehicle's 4-way flat trailer plug to a 7-way round blade socket. Use it when your trailer has a 7-way blade plug but your vehicle only has a 4-way flat. Provides the four basic lighting circuits (taillights, turn signals, brake lights, ground) through the 7-way connection.