I have a 2006 Stingray 220 DR with a 5.0 Mercruiser. I have No electrical power Except trim tilt, EVERTHING is dead, Lights, blower, radio, ect. The battery is new and I have also ran a new ground wire to the engine block. There has to be something I'm missing, all the circuit breaks under dash are not tripped. Please help, I need some new ideas . Thanks, Bobby