I think I found the problem. I already checked all the gloabes and they were fine. The other night, it suddenly started to work! And then on the way home it stopped, so I think I may just have a loose connection somewhere in the looms! I'll have to do a proper check tonight.
Chef_32, I am guessing all you have to do is place a variable resistor (not sure of the ohm range) in the current open circuit for the dash lights. Mine was already done, so I didn't have to find any of the wire values myself.
cheers