I'm trying to fit a PP-T40 display unit to a base model 206. It goes perfectly in the dash, but (and I don't know whether this is because there is a 3rd-party stereo fitted) there are 12 pins on the back of the display, but I have a six-pin block to fit to it, and only 4 wires in the block. Would anybosy have a wiring diagram for the clock and a clue about what the wires are? Thanks in advance.