I take it as you have no dash display the starter isn't working either, which means that a guess if you took off the dashboard to change the clocks and had to unplug some of the wire harness plugs then you've missed out re-connecting the 'blood flow' of the sytem (power), that the feeds dash displays and ignition.
Or disconnected the dash /harness earth feed if its set up like that.
BB
January 2011