The AS Relay for the match unit uses 24 pins, 2 12-pin jones plugs, 11 wires to each board, (10 wires-each digit, 1 common), and 2 wires for the coil. If you have an alternating relay in the game, the free-standing switch located in the middle is what energizes it, which means you'll have a total of 26 pins, (1 12-pin and 1 14-pin plug).