FS - OEM Hifi Audio System Amplifier - BMW 3-Series (E90 E92) Forum
Color codes for Base HiFi amp connector - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
FS: OEM HiFi Amplifier w/ mounting bracket - BMW M3 Forum (E90 E92)
2009 2010 2011 BMW E90 323i 328i 335i M3 Hi-Fi Audio Amplifier Alpine – German Audio Tech