Clarion VRX485VD Car DVD Player "wire 12v 3 point" Questions

wire "green" to the Ground and to the 12v yellow. None of these seemed to work. The screen would turn on but as soon as i turn it off and on again it would not work.....soooooooo Take the E-Brake wire

...12V PLUS constant power wire to a live 12 volt wire in the vehicle. Before making a connection, check that the wire you intend to connect it to is always live, even when the car?s ignition is turned ...