Hello I have a 2001 mustang gt convertible
My issue is that my speakers randomly started pulsing like a heart beat, even after I turned my head unit off. This started while driving through the rain tonight, and I just couldn’t get the pulsing or heartbeat to stop. Everytime it pulsed my headlights and dashboard would pulse as well, this has never happened before.

Things that might be important to know

I have a parasitic draw issue that is most likely due to the stock amps, I have an...

Speaker pulsing and headlights/dash doing it as well