Unfortunately the outlet I was using was built into the cabinet where we are going to tuck these things away, so I'm going to have power cables hanging out of the cabinet doors. TLS was talking about something like this to test the outlet: http://computers.become.com/3led-plugin-circuit-tester-wiring-status-of-120v-outlet-515--compare-prices--c205165243 The Depot or Lowes may have it cheaper. Was the outlet in the cabinet in stalled by a homeowner?