I've just recently bought a property and my internet is due to be set up in a week. I've had a look at the master socket and it's been left in a bit of a mess that I dont know how to fix. I currently have a blue-white in 2, orange-white in 3 and a white-blue in 5, are these correct? This wire feeds through to a further small box (looks like maybe just a cable extender with four double screw fixings?) and off into the wall. I then have a further cable with red, black, yellow and blue wires but none are connected to anything... looks like previously the yellow and blue have been. This wire then leads off to be connected to absolutely nothing.