I have a B&O 6000. The audio output is a cable with a 5 Pin Din socket . I have a lead with 4 coloured wires, Red, White, Blue and Yellow, with 4 RCA plugs. My problem is that I don’t know which colours go where. Ie: Front Left, Front Right, Rear Left and Rear Right, for connection into my decoder. Can anyone please help me out with this?