Aye! I had a tinker with the beast and it's more or less back to normal.
The horn sometimes "parps" when I turn the indicators on but 5 times out of 6 it's fine... (probably waiting for me to come up behind a gang of bikers before it decides to scare the **** out of them!
) but the wipers come on with the ignition, regardless of the switch setting.
I took out the big red relay to solve that.. the single-flick-wipe still works if I need to clear the windscreen and if it's raining non-stop, I can always refit the relay... It's all good fun!
I dismantled the relay and it doesn't seem to have much to it.... just a mini circuit board with a little computer attached to it.. but it wasn't wet. The short could be somewhere else in the wiring, I suppose... but I'll try to get a new "red" to see if it fixes it.
As for the leak.. I couldn't see any signs of serious leakery.. the carpets are dry etc. but then again, it could be just the odd drip and AR thoughtfully put the fusebox in the way to catch those!
Plastic bag method will solve it I think.. at least during the inclement weather.