Hmm....if I had to guess I'd say that when the electrical fire happened, a wire was exposed and now is shorting out/gounding out at times (when theres no power at all). The idle problem...I dunno..maybe a melted vacuum hose when the fire happened?...or a wire thats used on a vacuum sensor? You say the brake light is on now?? Is that an engine code popping up maybe??
-m
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