electrical troubleshoot

I just got a 79 CX500 Deluxe and have been going through cleaning things up and trying to make it all work right. Eventually will do a lot more, but want to make it all runnable first. The headlight does not work at the moment. I am not 100% sure what voltages should be coming through. I have...

I am new to this bike. It was stored for 20 years (incorrectly). It was going to be sold to local salvage. I have spent time cleaning, so some water/degreaser has been used sparingly. I bought a new battery and got instrument lights to go on...but only by fiddling with the key?? I did get...