Alternator wiring

Close. In your drawing, remove the top diode, and turn it upside down so that the point you marked "from alternator" is mating with the point you marked "hole"

The tab on the top diode will still be connected exactly as you have it, just upside down. In other words the connection between the two at top left in your drawing is unchanged except the top diode is now upside down. So when done you will have TWO identical connections to the two diodes.

I'm not good enough with photoshop to manipulate this, but they fit together one on top as below