Just for [shizzle]s and giggles disconnect the blower motor and try it again.
I'm betting it has something to do with mismatched relays.
There are a few circuits (radiator fan for example) that changed form N/O to N/C or vice versa.
And then there are all the different trim levels that the cars could be optioned with (climate control for example)
What you need to do is go through every load, relay, resistor pack, etc, that is connected to the fuse that is blowing until you find the one that that is drawing the current. Then test the item against what the WSM says it should be.
This whole debacle could have been avoided by using the tried and tested methods used by Sabbai and Jessiotrot when swapping their wagons to turbo.
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