Nintendo Pinout
Parts Side Solder Side
GND 1 A GND
GND 2 B GND
+5V 3 C +5V
+5V 4 D +5V
+12V 5 E +12V
-5V 6 F -5V
  7 H Coin
2-Start 8 J 1-Start
2-Right 9 K 1-Right
2-Left 10 L 1-Left
2-Up 11 M 1-Up
2-Down 12 N 1-Down
2-Jump 13 P 1-Jump
  14 R  
  15 S Service
GND 16 T GND
Green (note 1) 17 U (note 1) Red
Sync 18 V (note 1) Blue
Speaker (note 4) 19 W (note 2) Audio
+24V (note 3) 20 X Coin Counter
GND 21 Y GND
GND 22 Z GND

Note 1:  Nintendo uses INVERTED video.


Note 2:  External amplifier is needed.
Note 3:  Only used for coin counter.
Note 4:  Only if audio amp was populated on the board and some bootlegs