Gauntlet -------- PLAYER CONTROLS --------------- PIN 1 GROUND PIN 2 KEY PIN 3 START PIN 4 FIRE PIN 5 (empty) PIN 6 (empty) PIN 7 RIGHT PIN 8 LEFT PIN 9 DOWN PIN 10 UP PIN 11? LED ??? COIN SWITCHES ------------- PIN 1 GROUND PIN 2 KEY PIN 3 COIN 4 (RIGHT) PIN 4 COIN 3 (MIDRIGHT) PIN 5 COIN 2 (MIDLEFT) PIN 6 COIN 1 (LEFT) POWER ----- 1 GROUND 2 +SENSE 3 EMPTY 4 EMPTY 5 -SENSE 6 -15V DC 7 EMPTY 8 GROUND 9 +15V DC 10 +5V 11 +5V 12 GROUND I can't remember exactly which numbers are which but it's something like: +--------+ |1 4 7 10| |2 5 8 11| |3 6 9 12| +--------+ PST CONNECTOR (TO AUX BOARD) ------------- 1 EMPTY 2 SELF TEST 3 KEY 4 AUDIO LEFT 5 GROUND 6 AUDIO RIGHT 7 GROUND 8 COIN COUNTER 1 9 COIN COUNTER 2 10-11 EMPTY PVID ---- 1 RED 2 GROUND 3 KEY 4 GREEN 5 GROUND 6 BLUE 7 GROUND 8 GROUND 9 COMPOSITE SYNC 10 VERTICAL SYNC 11 HORIZONTAL SYNC JAUX ---- JAUX 1 KEY? (or empty) JAUX 2 JCC1 (coin counter 1) JAUX 3 JCC2 (coin counter 2) JAUX 4 GROUND JAUX 5 AUDIO-2 JAUX 6 KEY JAUX 7 SELF-TEST JAUX 8 GROUND JAUX 9 AUDIO-1 JSPK ---- JSPK 1 SPKR2 JSPK 2 GROUND (other wire for SPKR2) JSPK 3 BLANK JSPK 4 KEY JSPK 5 SPKR1 JSPK 6 GROUND (other wire for SPKR1) J15V 1 -15V J15V 2 -15V J15V 3 +15V J15V 4 +15V J15V 5 GROUND J15V 6 GROUND J15V 7 KEY J15V 8 12V AC LO J15V 9 12V AC HI JCDL A COIN DOOR LIGHTS \ JCDL B COIN DOOR LIGHTS \ JCC1 A COIN COUNTER 1 \ ____SMALL POP-UP CONNECTORS ON AUX BOARD JCC1 B COIN COUNTER 1 / JCC2 A COIN COUNTER 2 / JCC2 B COIN COUNTER 2 /