USE A TRIPLE A BATTERY, THE 1.5 VOLT TYPE, AND BUZZ THE WIRES OUT WITH THEM , WHEN A CONNECTION IS MADE A CLICK IS HEARD FROM THE SPEAKER, I HAVE DONE THIS MANY TIMES ON EXPENSIVE SPEAKERS/SYSTEMS NO WORRIES, GODD LUCK, ONLY TRY THIS ON SPEAKER WIRES ,, NOT POWER WIRES!!!!!