I will get some "they glow as they blow" type fuses in the future, they are very useful.
however I got 10 x 10A mini blade fuses for £1.99 on ebay, 20p a fuse is very reasonable. If they blow, it'll be very easy to fault find in the future. Cold day, no squirt, no warning message on dash? Blown fuse, screenwash is frozen.
Very nice feature. When I got the screen wash squirter working again I went on a little cruise in the countryside, blasting the wash every mile or so until it gave a little dribble, the wipers stopped and a message popped up on the dash warning me about the low screenwash level. I've never seen that in a car before, it's a useful bit of information.