Keith,
The ceiling fan dwg shows the fan is a 1.2A load. Due to the relative short distance between the fuse and the fan switch, a 2 amp fuse is sufficient. Don't worry to much about wire color. If fuse is good, check for voltage at the switch and be sure you have a a good meter ground. You should have 12v on the switch center terminal all the time and 12v on the other terminal with a wire on it when the switch is on. If you have 12v on the fuse and not at the switch, there could be a bad connection at the wire connector between the fuse block and the switch.
Steve