That harness that leads to the crank and cam sensors is the only short replaceable harness on the whole machine. There is a connector for it about in the middle of the block down under the coils and the cyl. head. You might look at that too, sometimes that harness will be bad or it could have a poor connection. I didn't see any code or hours where the hour meter is. A crank code would be an E-27 but maybe with the low voltages it may not trigger a code. Hopefully you discovered what the real issue is and can get it fired up and back to work again. Sometimes tracking these things down can be a real pain. Hope you get it going!!!