I have an omega 2.5 V6 on a V plate (1999) the electrics are going crazy, the sunroof opens, stereo gets louder, alarm goes off while driving and now the air con turns itself on with no keys in the ignition.
The only way to turn it off is to remove the fuse.
If anyone has come across this problem or has any ideas i would be very grateful for the advice

Sounds like some water has got into one of the fuse boxes.