I have a 2016 cbr300r engine Ive ripped out of a frame and put onto a go kart. I have no power at all. I have checked the voltage for the main fuse, and all others, as well as the ignition, the starter, all good. I was at a loss. I then checked the ground and it has 12v between it and the negative terminal, and 0v to the positive terminal, which is not right. I decided to try jumping the ground to the negative terminal with some wire I had lying around, and voila! The dash lights up for the first time since I took it out of the bike. So my question is, now what? What do I need to do to fix this the right way, where can I look for trouble?