I had it happen years ago. The battery hit the hood and shorted the thing in your first pic. Purchased a battery strap and a new fusible link and it has not hapened since. I think it was the one where your blue one is in the 2nd pic.

89 2dr 3.0 AT, manual hubs. 33x12.5 MT
gen 2 coils,Cranked front tbars
Dons rocker protection, Front/Rear Bumpers. ARB rear locker, 2" BL, Beefed up skid plates/trailing arms. Gen II uca, 2 Bouncy seats www.youtube.com/TagGeorge