it seems like a big problem, maby someone can help me.
i need to detect the current volume on head unit speaker output (not the one from the amp)
the + and - are not referenced to the groud but seems floating on 6V.
i thought i could put a diode and a capacitor and sample the line 100 times but it is a problem as first its deferential voltage and second i need to sample the front and rear. the result is not very accurate and its quite a problem to also conclude the fader possition.
if anyone have any sugestion i will be happy to hear.
Thanks and Regards, Ran.