986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Need a little help making sense of Hi-Fi factory stereo wiring (2004 non-Bose)

obthomas · 11-29-2018, 04:20 AM

I went through this with my 2003 with the same setup. Simply replaced the factory amplifier with a new one. Your replacement Head unit will need to be connected to the new amplifier. The problems are all about power. Fiber optics (MOST) are light signals and do not convey power. You will most likely abandon the YELLOW MOST fibers. You will need to find ignition switched power for you head end and make sure that you connect the head end to the amplifier so it provides sound and whatever on off and operating power the new amplifier is looking for. Good Luck.

11-29-2018, 04:20 AM	#2
obthomas Registered User Join Date: Feb 2017 Location: texas Posts: 156	I went through this with my 2003 with the same setup. Simply replaced the factory amplifier with a new one. Your replacement Head unit will need to be connected to the new amplifier. The problems are all about power. Fiber optics (MOST) are light signals and do not convey power. You will most likely abandon the YELLOW MOST fibers. You will need to find ignition switched power for you head end and make sure that you connect the head end to the amplifier so it provides sound and whatever on off and operating power the new amplifier is looking for. Good Luck. Last edited by obthomas; 11-29-2018 at 04:26 AM.