Quote BEEF; so from left side engine case I have three yellow wires. the got to a block and then to the rectifier. then a white to starter relay??
and a black to battery positive terminal
NO. The White should go to battery positive and the Black to Battery Negative.
The Black from the regulator should go to the Negative circuit NOT the starter relay.
You are correct the Grey wire is your Oil Pressure switch and the Red wire is your Neutral switch