Red Alert, GDI -------------- Solder Side | Parts Side ---------------------------------------------- Gnd | A | 1 | Gnd +5V | B | 2 | +5V +5V | C | 3 | +5V Coin | D | 4 | Service Switch | E | 5 | | F | 6 | | H | 7 | Blue Red | J | 8 | Green | K | 9 | Spkr+ | L | 10| Spkr- +12V | M | 11| +12V +12V | N | 12| +12V H Sync | P | 13| | R | 14| V Sync P2 Start | S | 15| P1 Start P2 Fire | T | 16| P1 Fire P2 Right | U | 17| P1 Right P2 Left | V | 18| P1 Left | W | 19| Coin Meter -5V | X | 20| -5V GND | Y | 21| GND GND | Z | 22| GND Note that this pinout is very close to KungFu Master. I believe the colors on this or the KungFu Master pinout are labeled incorrectly. The only differences I can see between this and KungFu Master are: 1) Green & Red reversed, 2) KungFu Master has composite sync on pin P whereas Red Alert has separate syncs, and 3) Red Alert has -5V on pins X and 20. The pins may need to be reversed or flipped vertically so that pin 22 is pin 1, pin 21 is pin 2, adn so on. DIP SW 1 2 3 4 5 6 7 8 OFF OFF 3 # OF MEN ON OFF 4 OFF ON 5 ON ON 6 OFF ON UPRIGHT, DO NOT CHANGE ON 5K BONUS MAN OFF 7K COIN/CREDIT OFF OFF FREE PLAY ON OFF 1/1 OFF ON 1/2 ON ON 2/1 ON TEST MODE OFF GAME MODE POTENTIOMETERS -------------- VR1 MASTER VOLUME VR2 ALL SOUNDS ASSOCIATED WITH MIRV ATTACK INCLUDING CAUTION VR3 DIVE BOMBING ATTACK VR4 FIRING OF ROCKET LAUNCHER VR5 ROCKET LAUNCHER EXPLOSIONS AND ATTACKING AIRCRAFT HITS VR6 FORMATION AND BOMBER AIRCRAFT VR7 HOVERING HELICOPTERS VR8 VOICE ==================================================================================== 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