Base line radio,... Orange -hot all the time, Acc fuse ..-20amp. Yellow ,Hot -key on.. Radio fuse -10amp.... Delco, Bose system...Orange,-20amp ARC fuse..Hot all the time, Yellow, radio fuse, -10 amp, hot with key on. Your second orange wire powers your Amp Relay, in the Acc fuse,- 20 amp ..it has a constant hot, or power..so you might be getting power @ the Radio, but Nothing out the speakers.. Hope that helps..
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