IMO, starting with the battey junction box (BJB) is a not the best idea. Each fuse controls why too much to be useful.
Start with the Central Junction Box (CJB).
As a reminder, the draw will never be zero. There are systems in the PCM and GEM that need stand-by power.
2003 GT Convertible (sold & missed)
2000 GT coupe (Craigslist project. Fixed. Now my DD). Windsor to Romeo swap.