Electronic – Wire color coding: not sure about the correct wire

connectorplugwire

Today, I had a new PC screen at home, but without power adapter. I got the one from the old screen and I had to replace the original plug for another one, that matches with the new screen. The one problem I have is the color code. The power adapter has two output wires: one black and one white, and the other cable (the correct plug) has three wires: browm, yellow/green and blue.

The problem is: I don't know wich wire is the correct one (+/-), not sure if black is + and blue is + too or these are the other wires.

I would like to know what respresents each color code in this case (black, white, green/yellow, blue).

I can't attach any photo of it because the phone's camera is broken, so I'm adding a little "description":

From power adapter:
– Black
– White

From the new plug for the screen:
– Green/yellow (both)
– Blue
– Brown

Thanks.

Best Answer

The yellow/green is earth. It is required for safety but not for powering up the display.

If there are no metal parts exposed (and some other requirements) this wire might not be required.

The orientation of the other two wires does not really matter for getting things to work. The live wires are brown = black and the neutrals are blue = white.