I have a 1990 candia 180, 130 hp, OMC Cobra drive. I was doing my clean-up in advance of launching, after hooking the battery up, I have power to my accessories- trim, nav lights, radio, but no crank, no start. Battery checks out and I have continuity to the starter. I am planning to replace the ground and positive cables as they are not in good shape (thought I would start there) but I read there is a 50A fuse in the engine compartment? Any idea where to start looking?