The heated seat fault is a dodgey connector in to a black relay box under the seat, fiddled about and it started clicking as I operated the switch.
Haven't found the fault with the screen yet, but there's power to the connectors either side and a good earth on both sides so I'm guessing the screen, but would have though one side would have failed an not both, but who knows.
Are there any connectors onto the screen under the plastic scuttle panel where the wipers fit?
Cheers
Pogo