the black wire is recieve - you,ll only need this if your radio needs a mic plugged in to hears outta speaker radios
like 2950 2510, 5010,2600 ,this wire isnt really needed or used
the yellow wire - ive NEVER used this wire in any radio i used.
looks right i think i dont uderstand pin 3 &5 two grounds ??? what is pins 1,2,7,8