wire tuck

so im working on my wire tuck on my 92 b22, i have a weber carb and pace setter headers, egr deleted, ecm deleted, all the extra vacuum and emmissions crap that is not needed, new stinger 4 gauge battery, alternator, and starter wires, i have an 80 amp inline fuse on my alternator power wire, i have removed the rear passenger side harness that is unclipable and attatches to the ecm, i have been trying to eliminate everything i dont need for engine operation, exterior and interior lighting, guages, heat, just the basic nessecities required for legal, reliable operation plus heat, id like to bypass the main fuse in the engine compartment by using my 80 amp fuse on the alternator power, id like to mount the engine compartment fuse box underneath the battery tray to retain use of the btn and head fuses, i have a couple questions regarding that.

1) where do the main fuse wires go to get power and ground, and are there only two to the main fuse?

2) how can the head/btn connector be de-pinned for cleaning?

no one? i need help figuring where the wires that bolt to the engine fuse box are supposes to go