The sub is a dual voice coil and the wiring for the factory sub has 2 pairs of wires. So I put it back as it was, but did have to flip polarity after the first try. Series vs parallel isn’t a factor. Someone correct me if I’m wrong.Did you wire the 4 ohm sub in series or parallel? Thanks.
I see in the next post someone mentioned it again, but that is with a single pair of wires coming in.