Zero Point 2 (c) 1999 Unico Zero Point 2 board JAMMA Pinout Main Jamma Connector Solder Side | Parts Side ------------------------------------------------------------------ GND | A | 1 | GND GND | B | 2 | GND +5 | C | 3 | +5 +5 | D | 4 | +5 | E | 5 | +12 | F | 6 | +12 ------------ KEY ------------| H | 7 |------------ KEY ----------- | J | 8 | Coin Counter # 1 Player 2 Lamp | K | 9 | Player 1 Lamp Speaker (L) | L | 10| Speaker (R) | M | 11| Video Green | N | 12| Video Red Video Sync | P | 13| Video Blue Service Switch | R | 14| Video GND | S | 15| Test Switch Coin Switch 2 | T | 16| Coin Switch 1 Player 2 Start | U | 17| Player 1 Start | V | 18| | W | 19| | X | 20| | Y | 21| | Z | 22| | a | 23| | b | 24| | c | 25| | d | 26| GND | e | 27| GND GND | f | 28| GND SPECIAL NOTICE - Sound wiring change: For cabinets with one speaker: JAMMA pin 10 goes to speaker (+) Run a ground to the negative side of speaker. For cabinets with two speakers: JAMMA pin 10 goes to right speaker (+) JAMMA pin L goes to left speaker (+) Run a ground to the negative side of each speaker. Using Original Unico Light Guns & connectors: 1PLAY: Left (Red) Gun Connector Pinout* 1| Gun OPTO - White Wire 2| +5 Volts - Red Wire 3| Trigger - Green Wire 4| Ground - Black Wire 2PLAY: Right (Blue) Gun Connector Pinout* 1| Gun OPTO - White Wire 2| +5 Volts - Red Wire 3| Trigger - Green Wire 4| Ground - Black Wire * This is not the same as the HAPP Controls' 4-pin standard BrianT