1990 T4r/Auto/v6

Purchased the vehicle new and occasionally have removed the battery on numerous occasions, I removed the battery to charge but in the process of installing and connecting the cables far too much arcing so I immediately removed the cables and notices there is a ground wire that runs from the inner fender to the neg. side of battery burned loose so I replaced it then reconnected the cables and now I have no power to the ignition switch and blowing the 15 am fuse. The fuses in the cab appear to be fine.

I have no clue how or whether the 80, 40, or 30 amp fuses can be removed and replaced or possibly s reset mechanism in the larger what appear to be fuses in the engine compartment fuse panel??

Comment and or suggestions appreciated!!.

The big fuses have to come out through the bottom. Remove the cover, unbolt the box from the fender, remove the bottom cover and unclip it from underneath. It should push through and exit through the bottom of the fuse box.

I'm brand new so can't post a new thread. Please help.
How does a bad ground effect the EFI fuse? I have a 93 3.0 and it's blowing the EFI with every attempt at starting.
O2 sensors wires are fine. Replaced Relays, new fuel pump, disconnected AFM and VSV. No change.
Only blows when starting and not in the on position. I'm extremely frustrated. Swapped the Computer and no change.
I'm going nuts here. I can't find anything wrong but as soon as you turn the key and the starter is turning it blows the EFI FUSE.
any ideas or help would be greatly appreciated. Thanks