2016 Kia Optima SXL, Harmon Kardon Audio Diagram

Im looking to install subs and an amp but am having trouble with tapping into the Harmon Cardon for the remote wire. Im a bit at a stand still. There are (2)Connectors A & B but there is nothing to clarify which is which besides the color of one connector is (white) the other (black) & to make it even more confusing they both have the same exact number of pins. Only difference is (white)-Connector pin 7 there is a green/blue wire & the(black)-Connector pin 7 there is nothing(Blank).Please help me out with this one.{**Adam925**}

Radio Ignition      Blue      +      Radio, white 24 pin plug, pin 11 or 18       The amplifier turn on is controlled by data. You will have to use the above wire or some other switched power source.

Thanks but i decided not to go that route. I decided to toss out the cheap PAC LoC & went and purchased a new JL Audio LoC 22 and ran a remote to the amp from that.{**Adam925**}