Two wires and one switch? Then it will not matter where you put the wires...
If the switch has just two terminals - any way round - if it has three terminals then put one wire on the centre terminal and the other anywhere else.
Unless you've failed to properly describe what you have then the function of the switch is to join one wire to the other in one position and to disconnect them in the other.
Good luck...
Roy Orbital
September 2014
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