I'm working on a 2004 Boxster with the Hi-Fi stereo option. I have a factory 4 channel Becker (non-Bose) amplifier with the MOST fiber optic connection to the Becker CDR-23. There is no rear speaker deck. I am planning on replacing the head unit and amplifier. I've searched the forums and read these guides:
https://www.renntech.org/forums/topic/19616-porsche-boxster-avic-d3-installation-instructions/
https://www.pelicanparts.com/techarticles/Boxster_Tech/88-ELEC-Radio_Install/88-ELEC-Radio_Install.htm
http://986forum.com/forums/diy-project-guides/56380-installing-pioneer-avh-4000nex-euro-motorsport-double-din.html
There are a few things I still don't understand. Now from what I understand the factory amplifier gets power and audio signal from the MOST bus connection. Is that correct? So can someone explain to me what the yellow "C" connector is doing with line outputs? Isn't this what the MOST bus is for? I was planning on running RCA cables directly from my new head unit to the new amplifier but these guides use a harness to connect to the RCA out on my head unit to this yellow C connector. Where exactly does this go? I know that I still have to use this to the remote amp turn on wire but the rest I don't understand.
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