so I need to put a switch in here, but all wire are black so i dont know which wire will go where. just to give a context, this set of wires WERE used to turn on/off 3 light bulbs. so the 3 wires will go to one side of the switch legs, and the other goes wire to the other side of the switch legs. now, one of the light bulb is dead now(no more fixtures installed, just the wire with electrical tape in it). so in reality, i will just need to utilize 3 wires in the picture.
so, i measured the voltages in the individual wires. 2 of the wires has ~100 volts(top wires), 1 wire has 0 Volts(bottom left) and the last wire has ~30 Volts(bottom right). when i said i measured, what i did was put the red probe of the multimeter on the wire, and the black probe of the multimeter on the tiny metal at the bottom of the picture.
now for my questions, am i right in assuming that:
- the 0 volt wire(bottom left) is the dead fixture(so i dont need to bother with it since it is dead anyway)
- the top wires(both have ~100 volts), goes to one side of the switch legs and bottom left wire (~30 Volts) goes to the other side of the switch
- what would happen if I tap the probes of the multimeter in the wires(red goes to one wire and black goes to other wire)? is that safe?
i forgot to say that I touched the two bottom wires together and nothing happened.