Seems to be a choice and all show as correct. Which one is the right one, anyone know ?

 

976

976FB

MC8502

 

This is to connect my Parrot CK3100. 

 

Thanks.

I've used 976FB  or 976 and swapped the blue plug in to the quadlock that goes in to the back of the stereo (the blue plug is the 3.5mm line in which you may or may not use) the FB should in theory be fully populated (with all the connections including the ones that are not required) but sometimes they are not.