Hi, I am looking to add an external amp and subwoofer to a 2011 S5 Cabriolet with the B&O system. Other posts seem to suggest the colors of the wires I need to tap are yellow/white and blue/white, however, I do not see these colors on mine. Can anyone shed some light on this? I have attached pics, as well as a wiring schematic I found in another post (that I honestly don't know how to read).
Power > positive terminal on battery (in trunk)
Ground > common grounding point behind right storage panel
Remote > spade tapped into "Rear Seat Entertainment" fuse location behind right storage panel.
R+/L+ > yellow/white wire coming out of B&O amp behind left trunk panel
R-/L- > blue/white wire coming out of B&O amp
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