2005 bmw 545i radio

Question by antswade posted 3 months 1 week ago in 2004-2009 (E60, E61)

Hello..I have checked the entire fiber optic loop and the only one not getting a light is the one that goes into the Bluetooth module..my question is which device would that mean is not working?? I checked the amp..red light the satellite receiver ..red light ..the cd changer red light..and behind the radio red light ...