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I am upgrading my PCK 3.0 to a Pioneer NEX 8400 and I am trying to hook up my existing Sirius XM antenna and GPS antenna There are 3 Fakra connectors on back. Blue, Black (I think this is the FM ) and yellow. Can anyone tell me what color connector goes to what? I also have another question. Is there anyway to stop the PCM error about the missing head to go away?