SPIDERS
  COMP SIDE                     CKT SIDE
-----------                     --------
  A  GND                         1   GND
  B  GND                         2   GND
  C  +5V                         3   +5V
  D  -5V                         4   -5V
  E                              5
  F                              6
  H                              7
  J  COIN                        8
  K                              9   COIN
  L  1 START                     10  2 START
  M  1 LEFT                      11  1 RIGHT
  N  1 SHOOT                     12
  P                              13
  R                              14
  S                              15
  T  VID RED                     16  VID GN
  U  VID BL                      17  SYNC
  V  SP+                         18     
  W  +12V                        19  +12V
  X  +12V                        20  +12V
  Y  GND                         21  GND
  Z  GND                         22  GND