Ok, so you have the basic connector (which is all I think they sell) and you are wondering about the second connector. See the orange or pink wire in the second connector, connect your amp remote turn on (blue/whte) to it and you'll have sound.

Gotta power the factory amp or you get zippo

aka..go sprinkle some magic fairy dust
http://www.grandprixforums.net/cants...gtp-45223.html