Quoted from dmarston:As long as black goes to one of the two terminals and the power to activate (switched by a relay) goes to the other side, it doesn't matter which wire goes to which side.
Just a side note....it doesn't matter which wire goes to which side in your game...or in EM's running coils on AC, HOWEVER, it does matter how you wire up coils on newer machines (solid state) running DC power. The newer games have a diode across the coil connection and polarity is important when connecting these coils.
