Hey guys, I have an issue with the Rockford system in my 15 X, the subwoofer hasn’t been working at all, I removed the sub and it seems like all wiring is fine, it’s getting power from 2 of the 4 pins in the connector, not sure if all 4 should be receiving power. The amp is all plugged in and all speakers/ adjustment work through the infotainment system. I picked up another Rockford sub and still no luck.. should I be looking into replacing the amp next? I’m stumped