Was out this morning finishing up the boat. Getting ready to leave Wed. morning. You know the usual stuff. Change oil, check all the belts and hoses. Anyway I cranked the engine to warm it up for the oil change. Change the oil, and crawled around sort of down under the cockpit floor. Looking, checking, etc. So, I go to crank the engine back up, and zip. I mean NADA. The panel is dead, start switch is dead. Now I know there is something I knocked off, and my first thought is a ground wire. First I take a casual look through the inspection port. Checked the harness plugs, visually, and don't see anything. An hour later, I am going checking towards the panel, with a volt meter, looking for a bad or broken connection, that I managed to knock off. To finish out the story, I bumped the harness connector at the engine, and if came apart. What I had done was to knock it basically loose, but it didn't come totally apart. And I just made a cursory visual of it, and it looked plugged up, and I assumed it was. I know that on more than one occasion I have told others on this board to check the simple stuff first, and also to use some logic. So now, I just need to learn to follow my own advice.