Thanks for the replies, but the problem isn't getting rid of the water, I've done that. I hoped there was some elecrical wizards out there that could tell me what to do next.

Hi from a new member, I,ve got a really poorly P38 2.5 DSE. It fell out with me when I left the sunroof open over night. Of course, it rained, and it has sent all, I mean ALL the electrics doo-lally. Fuel cap opened its self, now it won't work at all. Alarm activated. Radio switching its self on...