The relays and fuses are a little confusing.
The a/c relay is actually the low fan, but takes the 30A fuse . The reason for this is that the low fan uses a resistor in series to drop the voltage to obtain the lower speed, but this also makes for a higher current demand.
The High fan is is straight 12v with activation from the Blue relay
and there has been a change on the 15 A to 25A.
Also , be careful of relay location as they are interchangeable...