I HAVE A SONY 5 CHANNNEL AMP AND A KENWOOD HEAD UNIT.EVERYTHING WORKS FINE WHEN THE ENGINE IS RUNNING.WHEN I TURN THE KEY DOWN TO ACCESSORY THE AMP DISTORTS. I RAN A 4 GUAGE WIRE DIRECT TO THE BATTERY AND THE GROUND TO THE SEAT BOLT AT THE FLOOR.THE TURN ON LEAD COMES FROM THE HEAD UNIT. HAVENT...