[Aredubjay]

This type of wholesale fuse blowing definitely points toward a short.

Check the mirror wires first. It's amazing that those little wires can do some major poo poo and make you think the car is dead.

When my FL went out, I went to Auto Zone and got a universal fusible link that had a fuse holder in it. I got a fuse of recommended amperage and some spade plugs. The male spade plugs worked nicely into the connectors in the fuse box. That did me until I got the OE fusible link in from the dealer (before I knew about subaruparts.com). The "rigged" FL now serves as an emergency backup, should I ever need it. BTW, mine was gone and replaced with a piece of heavy guage copper wire. It almost caused a melt down in my fuse box.

Another thing you might check is abrasion on the wires going to the battery. Perhaps it has rubbed up against something, rubbing off the insulation and is now shorting against metal. Also, check the connections going into the under-hood and in cabin fuse boxes. I know I'm rambling, but, I'm laying out things as I think of them, trying to start with the simple and work toward the complicated.