BOSCONIAN   
                                              
                   PARTS SIDE     SOLDER SIDE
                    GND   A         1   GND
                   SPKR   B         2   SPKR                         
                          C         3   CTR          
                          D         4          
                   +12V   E         5   +12V
                    +5V   F         6   +5V
                    GND   H         7   GND
              CREDIT SW   J         8   TEST SWITCH                         
                COIN SW   K         9             ___________
               1P START   L        10  2P START  |           |
               PL1 FIRE   M        11  PL2 FIRE  |   PL2     |        
               PL1 LEFT   N        12  PL2 LEFT  | CONTROLS  |
               PL1 DOWN   P        13  PL2 DOWN  |   FOR     |
              PL1 RIGHT   R        14  PL2 RIGHT | COCKTAIL  |
              PL1 UP      S        15  PL2 UP    |   ONLY    |
                          T        16            |___________|
                          U        17       
                          V        18      
                          W        19       
                          X        20 
                          Y        21  GND (TABLE ONLY)
                    GND   Z        22  GND
On the CPU board                                                         
            1 - +12v
            2 - GND
            3 - +5v
On the Video board                                                     
            1 - RED
            2 - GN 
            3 - BL 
            4 - SYNC
            5 - VIDEO GND
            6 - (Not used)