Amplifier Connections?
Need someone's help. I cannot get sound from my radio. Knob doesn't work. Steering column control don't work. I replaced the amp with another amp, and that doesn't work. There is one small connection on the end of the amp (circular connector) that doesn't have anything attached to it. Should it? I did a VIN lookup and this is what the car came with for audio options:
S640A Preparation f tel.installation universal
S645A BMW US Radio
S650A CD player
S661A Radio BMW Business (C43)
S677A HiFi System Professional DSP
S692A Preparation, BMW 6-CD changer I-bus
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