Black, red, white and green have been the standard colors for house wiring for quite a while. Your question needs to be a little more specific.
More information is needed as to what device you are connecting to what power supply. The only two identifiable wires are the white and green. In North America the white colour is used for the circuit's neutral and the green is used for grounding of devices.
The fixture box should have a ground screw on the bottom of the box. Sometimes you have to move other wires out of the way to see it. Just reconnect the fixture ground wire to this screw.
Shield is ground. White is Neutral, center tap of the transformer from the power company.
In a house, the ground wires are green, and in some cases, bare. The other wires in a typical house are black, red, and white. The red and the black wires are both considered "hot" wires, whereas the white wire is the neutral wire. The voltage between the red and black wires is 240 volts in the US, while the voltage between either of those and the white wire is 120 volts. The white wire and the green wire actually are connected together in the panel box. However, you are only allowed to connect the ground conductor and the white together just once in the panel box at the neutral block.
Possibly old wiring corroding. Could be caused by loose connections. May have to run new wires. Consult a licensed electrician.
red - brown black - blue green/yellow - green
More information is needed as to what device you are connecting to what power supply. The only two identifiable wires are the white and green. In North America the white colour is used for the circuit's neutral and the green is used for grounding of devices.
red is live so therefore now equivalent to brown black is neutral so therefore now equivalent to blue green is earth so now equivalent to the striped yellow/green all old appliances can be rewired using these colours, make sure you fuse the live wire though as some old appliances are not internally fused like they are these days.
There is a good chance that the green wire is your grounding wire. http://www.youtube.com/watch?v=KNo78fMZfRI&feature=PlayList&p=05D94AD4BF05DD32&index=5&playnext=4&playnext_from=PL Attach black to black with connectors and ground (green) to ground (usually a white wire in the box).
the old colours are black and red, they have been replaced by the European harmonisation of brown and blue. the black is now the blue the red is now the brown and the yellow and green is the CPC ( circuit protective conductor) or more commonly known as "earth" but that's a wrong identification of it.
You will need old comp power supply. +12 V is on YELLOW wires. -(minus) or ground is BLACK If you have ATX power supply (that one without wires going to power switch on front - all PC now have ATX) you have to short GREEN and BLACK on main (the biggest plug to start power supply. So use any pair black/yellow to power car amplifier.
how old is kodak black
Connect to two wires you have to the the spade connectors and forget the ground connector. The spade connector wires should be black and white. Black to gold and white to silver. If the wires coming from the heater happen to be red and white, then red goes to black. You could buy a simple lamp cord which has only tow wires.
They fade with time. The black goes greenish.
170 years old.
black and white, sometimes its green when its 2 year old.
The same thing they are made of now. Plastic or rubber and copper wires.