Addition of extention to BT Linebox?

Question

I have lost the instructions that came with my extention cable for attaching to the BT Linebox and my wiring has come away from the linebox. Does anybody know what each of the 4 wire colours goes to which connection number of the linebox. One of the extentions is coloured WHITE; GREEN; BLUE & RED. The other extention appears to have the same colouring as the six-wire BT cable but only has 4. I am assuming that it will be like-for-like in that instance. On a different tack, anybody know where I could get the wiring tool to do the re-connections?

Answer 1

http://www.wppltd.demon.co.uk/WPP/Wiring/UK_telephone/uk_telephone.html