I have a pair of Volvo Penta D4 225's in my boat, and my starboard engine has no power to the ignition switch. I cannot get anything to turn on. I have traced the wire from the ignition switch to what appears to be some sort of ECU? I am not sure where to trace further than that. I have not been able to find a diagram, and I am having trouble finding fuses for this. Any help would be much appreciated.