Quote:
Originally Posted by alvitdk
... ground, a B+ (seemingly 12V), In+, In- (Line in I guess), another ground and a ON/Off pin, (not sure if that needs to get +12V, or ground supplied to make this thing work.) ...
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B+ is, indeed, power to the sub (B is for battery); In+/In- is the music signal input; On/Off is a signal from the HU telling the sub amp to turn on/off; grounds is grounds. You can verify in the FSM (link in sig).