Championship Bowling - (c) 1989 Romstar Inc. Main Jamma Connector Solder Side | Parts Side ------------------------------------------------------------------ GND | A | 1 | GND GND | B | 2 | GND +5V | C | 3 | +5V +5V | D | 4 | +5V -5V | E | 5 | -5V +12V | F | 6 | +12V ------------ KEY ------------| H | 7 |------------ KEY ----------- Coin Counter 2 | J | 8 | Coin Counter 1 Coin Lock Out 2 | K | 9 | Coin Lock Out 1 Speaker (-) | L | 10| Speaker (+) | M | 11| Video Green | N | 12| Video Red Video Sync | P | 13| Video Blue Service SW | R | 14| Video GND Tilt Switch | S | 15| Test Switch Coin Switch 2 | T | 16| Coin Switch 1 Player 2 Start | U | 17| Player 1 Start #2 Trackball X Direction* | V | 18| #1 Trackball X Direction #2 Trackball Y Direction* | W | 19| #1 Trackball Y Direction #2 Trackball X Clock* | X | 20| #1 Trackball X Clock #2 Trackball Y Clock* | Y | 21| #1 Trackball Y Clock Player 2 Hook Right* | Z | 22| Player 1 Hook Right Player 2 Hook Left* | a | 23| Player 1 Hook Left | b | 24| Player Select | c | 25| | d | 26| GND | e | 27| GND GND | f | 28| GND * Cocktail Mode only. Standard 6 pin Trackball connector Pin Wire Funtion ------------------------------ 1 | BLK | Ground 2 | RED | +5 Volts DC 3 | YEL | Y Clock 4 | GRN | Y Direction 5 | BLU | X Direction 6 | PUR | X Clock BrianT