Can anyone help plz. I have a poor radio reception on fm stations in certain areas and my am/mw reception is non existent. From what i can remember the am/mw reception was always no existant, but fm was fine. From what i understand there is a booster built into the symphony head unit and it sends a 12v down co-ax to aerial is this correct?. Also is there any more to this ie other components or wiring elsewhere in the car which could cause this to happen?