RED ALERT (GDI, licensed from Irem) COMP SIDE CKT SIDE 1 GND 2 GND 3 GND 4 GND 5 -5V 6 -5V 7 CTR 8 9 SHOOTER LEFT 10 SHOOTER LEFT 11 SHOOTER RIGHT 12 SHOOTER RIGHT 13 FIRE 14 FIRE 15 2 START 16 1 START 17 V SYNC 18 COMP SYNC 19 20 H SYNC 21 +12V 22 +12V 23 +12V 24 +12V 25 SP 26 SP 27 28 29 VID RED 30 VID GN 31 VID BL 32 33 34 35 36 37 COIN SVC 38 COIN 39 +5V 40 +5V 41 +5V 42 +5V 43 GND 44 GND