PIN 1    FAST SCAN. ( yellow )
                    PIN 2    GROUND. ( N/C )
                    PIN 3    PTT. ( green )
                    PIN 4    MIC. ( white )
                    PIN 5    MIC GROUND. ( brown )   
                    PIN 6    + 5 VOLTS. ( black )
                    PIN 7    UP. ( blue )
                    PIN 8    DOWN. ( red )