Route 16 Tekhan/Centuri CPU Edge Connector: (A) PARTS SIDE | SOLDER SIDE (B) +5V | A | 1 | -5V +5V | B | 2 | -5V Right 2 | C | 3 | Right 1 Left 2 | D | 4 | Left 1 Up 2 | E | 5 | Up 1 Down 2 | F | 6 | Down 1 Speed 2 | H | 7 | Speed 1 | J | 8 | Start 2 | K | 9 | Service Start 1 | L | 10| Coin | M | 11| Green | N | 12| Coin Count Red | P | 13| Blue | R | 14| Sync | S | 15| Speaker GND | T | 16| GND | U | 17| +12V GND | V | 18| +12V