ok i have a 1997 5.7 gs volvo penta . OK here is what is going on . I've changed ignition bypassed safety neutral switch also bypassed emergency kill switch. Traced wires everything looks good . I have 14 volts at ignition all guages and accessories work . Engine won't turn over to start with ignition switch . Any ideas? What does the 2 50 amp breakers do near stdb exhaust manifold?