OP
TwoSocks
There are actually a black and blue cable connected to the black device in the picture.
I'm using this Rolson Digital Voltage Tester
and testing by holding the button and touching the exposed copper wire.
Got some extra pictures to try and shed some more light.
I'm using this Rolson Digital Voltage Tester
and testing by holding the button and touching the exposed copper wire.
Got some extra pictures to try and shed some more light.