Ok here goes, I have just moved house and the cooker in my new house was rubbish so decided to swap them over. I now have a few problems relating to this issue. Firstly the wires were the opposite way on in the different boxes ( i.e. the red and black wires). Also the wires aren't red and black on the cooker i'm trying to put in the new house so I placed them in the same positions (right hand wire in the first box has been put into the right hand place in the new box). The wires on my new cooker are blue brown and earth and I have matched the brown with the black and the blue with red. I think I may have got this the wrong way around can anyone help?