PARTS SIDE | SOLDER SIDE
--------------------------------------------------
(+5V) Gnd | A | 1 | Gnd (+5V)
(+5V) Gnd | B | 2 | Gnd (+5V)
+5V | C | 3 | +5V
+5V | D | 4 | +5V
(?) Credit Mult. | E | 5 | Power Credit Mult. (?)
(Not Used) | F | 6 | Coin Meter
Coin Sw. | H | 7 | NC (?)*
1P Start | J | 8 | 2P Start
P1 Up | K | 9 | P2 Up
P1 Down | L | 10| P2 Down
P1 Right | M | 11| P2 Right
P1 Left | N | 12| P2 Left
P1 Smoke | P | 13| P2 Smoke
Credit Sw. | R | 14| Test Pos.
| S | 15| Gnd (Cocktail only)
(Common) Gnd | T | 16| Gnd (Monitor)
Red | U | 17| Green
Blue | V | 18| Comp. Sync
Spkr | W | 19| Spkr
+12V | X | 20| +12V
(+12V) Gnd | Y | 21| Gnd (+12V)
(+12V) Gnd | Z | 22| Gnd (+12V)