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)