What is the fuse number for the wipers on my 2004 LWB Ford Transit 350?

All the wiper functions suddenly failed on my 2004 LWB Ford Transit 350 but I can't locate the fuse to check it because I don't have an owner's handbook. Please could you tell me which fuse number corresponds to the windscreen wipers? Incidentally, this failure occurred at virtually the same time as a short-lived reduced engine power problem rectified itself - do you think the two problems could be related? Thanks.