Circus, Robot Bowl Exidy 1977 1 5v 2 gnd 3 video ret 4 video 5 1 player 6 2 player 12 coin switch 14 35vac CT 15 35vac 16 35vac 17 video inv relay - 18 video inv relay + 20 speaker out 21 speaker out +5v 22 pot wiper ->| 5k gnd