ShootTheCore
Legendary
I believe your wiring is correct from what I can see in your pictures, but just to be clear, it should be:
Pin 1 on the SuperGun = +12V
Pin 2 on the SuperGun = GND
Pin 3 on the SuperGun = GND
Pin 4 on the SuperGun = +5V
Pin 3 on your SuperGun cable in the pictures is unpopulated, which isn't recommended (you should have two Grounds) but will work.
Long round pin Ground on AC plug (green wire) = FG
Wide blade Neutral on AC plug (white wire) = AC/N
Narrow blade Live on AC plug (black wire) = AC/L
Pin 1 on the SuperGun = +12V
Pin 2 on the SuperGun = GND
Pin 3 on the SuperGun = GND
Pin 4 on the SuperGun = +5V
Pin 3 on your SuperGun cable in the pictures is unpopulated, which isn't recommended (you should have two Grounds) but will work.
Long round pin Ground on AC plug (green wire) = FG
Wide blade Neutral on AC plug (white wire) = AC/N
Narrow blade Live on AC plug (black wire) = AC/L