Sony ericsson MPS-70 wires

picture shows wires that comes out sony ericsson mps-70 speaker.
black and red wires are for power, you need to connect them to power source (2.5-5V).
green and blue wires are for left and right speaker and yellow one is common - (GND).
Wiring diagram is useful to turn MPS 71 to Ampli Speakers. <br>Thanks, <br>Harish