I was out in boat yesterday and first the radio stopped working and then the boat just died, then had no power would not turn over at all and also the boat lights would not work, the trim motor worked and the fishifinder worked because it is directly hooked up to battery. My father called the mechanic and was told it was probably the selenoid but i think there is a loose connection or a blown fuse. It does not make since to me that something on the motor would make the radio and lights on the boat not work. What do you think?