This is looking directly at the connector coming FROM the powersupply:

PIN   Description
 1    +5V
 2    Shield Ground
 3    +12V
 4    Signal Ground
 5    -12V
Taken from the bottom of an Amiga 500 PSU.

Amiga 2000 Series Power Supply Connector
This is a description of the power supply connector ON THE MOTHERBOARD of the Amiga 2000
series.

PIN   Description
 1    +5V
 2    +5V
 3    +5V
 4    +5V
 5    GND1
 6    GND2
 7    GND3
 8    GND4
 9    +12V
10    KEY  (this line is missing, you will be able to tell the orientation with this pin)
11    -12V
12    +5V USER
13    -5V
14    TICK  (this line is NOT found on PC power supplies)
Taken from the Amiga 2000 Schematics in the back of every Amiga 2000 manual.

Amiga 3000D Power Supply Connector
This is a description of the power supply connector ON THE MOTHERBOARD of the Amiga 3000D
series.

PIN   Description
 1    +VID
 2    +5V
 3    +5V
 4    +5V
 6    GND
 7    GND
 8    GND
 9    GND
10    GND
11    -5V
12    +5V USER
13    TICK
14    -12V/-12V USER
15    +12V/+12V USER
Taken from the Amiga 3000D Schematics in the back of every Amiga 3000 manual.

Amiga 3000T Power Supply Connector
This is a description of the power supply connector ON THE MOTHERBOARD of the Amiga 3000T
series.

PIN   Description   PIN   Description
 1    TICK          13    FAIL
 2    -12V          14    +12V
 3    -5V           15    +12V
 4    GND           16    +5V USER
 5    GND           17    GND
 6    GND           18    GND
 7    GND           19    GND
 8    GND           20    GND
 9    +5V           21    +5V
10    +5V           22    +5V
11    +5V           23    +5V
12    +5V           24    +5V
Taken from the Amiga 3000T Schematics in the back of every Amiga 3000T manual.