Join the dots please. What goes where?
The white connector blocks in the Parrot kit connect to the Parrot electronics box, as do the Parrot display and the microphone.
That leaves the four connection blocks I've labelled A,B,C,D, plus the existing (male) blocks E & F currently plugged into the Symphony II.
There also seems to be a choice of three female mute connections for the yellow male mute cable to pair with.
Finally there are the green (line +) and brown (line -) wires. Are they needed?
Please note the "plus BOSE" bit before replying
Symphony II wiring labelling:
Current connection blocks:
Parrot 3100 "mute cable" wiring:
Parrot 3100 "power cable" wiring: