Hi guys,
I just bought another car recently and already has a sound system with pioneer headunit, subwoofer running on an amp.
I swapped the headunit with alpine xda-x100, plug the RCA cables to the back of the headunit to SW, but the sub isn't working at all.
I did the rewiring myself, just matched all the colours.
Everything's working fine except the sub isn't working.
Any idea what's goin on?
Thanks,
Steven
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