MAPPY                             
                                              
                   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   TILT                                
                COIN SW   K         9            
               1P START   L        10  2P START               
               PL1 FIRE   M        11  PL2 FIRE  
               PL1 LEFT   N        12  PL2 LEFT  
                          P        13            
              PL1 RIGHT   R        14  PL2 RIGHT 
              PL1 JUMP    S        15  PL2 JUMP  
                          T        16            
                          U        17       
                          V        18      
                          W        19       
                          X        20 
                          Y        21  GND (TABLE ONLY)
                    GND   Z        22  GND

On the Video board                      On the CPU board          
            1 - RED                          1 - +12V
            2 - GN                           2 - GND
            3 - BL                           3 - +5V
            4 - SYNC
            5 - VIDEO GND
            6 - (Not used)