2015 Charger road and track, non metallic tint, practically brand new and undriven, only one of my stations locally comes through, the rest are literally complete static 99% of the time. Rockford system installed by shop. Installing a sub did not ruin my radio on either of my 3 other cars so I don’t think that’s it.. Tint has been removed from rear window now (to no avail) the ground for the Rockford is the same ground they have the battery hooked too. So it’s not a ground loop I don’t think. A shop would NOT disconnect the ground to the factory head unit right? Still have radio interference. The same stations I’m getting static on, on the charger, work perfectly on our 17 Escape (Titanium if it matters) . Wtf is causing this, cuz it’s pissing me tf off. aggravation brand new car shouldn’t have no radio, even if I don’t use it, that’s like leaving your kitchen table broken even tho you don’t use it. Should be working the way it’s designed to and not however tf it wants to right. Also disconnected the rca cables to the system as well and went for a drive, with zero success. Let me know PLEASE. Been bugging me forever especially after my dad said, “how tf can you stand that“ with his unhelpful ass so now it’s even more noticeable than ever. And extremely making me wanna drive it off a bridge. Lmk ?