1983 SN 2001 dash wiring photos

So I was out on the water all was fine, cut the motor off and anchored for a few hours. When I go back to start it, the dash won't get any power. New battery and ran the bilge so no power issues. But it was a complete power disconnect to the dash and therefore not starting either. Figured it was a fuse or a shorted/disconnected wire. Troubleshot everything you could imagine and there were a few loose connections which I tightened. In the end had to get a tow and never figured it out on the water.

After some research I figured it to be the neutral safety switch and changed that out. Still nothing. Then when I removed the grey colored electrical cover with "Pleasurecraft Marine Engines" written on it I noticed the red button with "40" written on it. Pushed that button and voila. And then I noticed the button is actually visible through that cover. Imagine how dumb I felt... whoops! 

Anyways now I have a loose light grey colored wire behind the dash. Seems to be for the bow and stern lights. I don't want to create another issue so I'm apprehensive to just attach it where I think it goes. I would post pictures if I could. 

I'd imagine you have the black and white of this picture, skillfully colored by JTerr when he was having some issues.

Besides the lights, there's also a gray wire going to the tach (it's colored black in his picture, but says gray.