Alternator wiring

I removed the alternator to have it tested. Tested good. Battery gauge is bouncing and all lights (exterior and interior) are pulsing at idle. I'm hoping that I have reconnected the wiring correctly. I'm not real worried about the battery to alt wire, but how about the blue and green? Are they correct, or do I have them backwards? There's also a threaded hole on the front of the casing (black arrow) that says "grnd". What does this connect to or is it necessary?

This is not a pic of my alt...

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Author: Deano