80 amp fuse blown

Is there a particular electical issue that would blow an 80 amp main fuse? Looked at a Miata that had such a problem and the owner had no idea what might have caused it. I didn't either, so I am asking you lot who are infinitely smarter than I. Thanks.

I'd suggest a short somewhere.

I suggest a short everywhere

What they said and probably a result of someones that thinks they know electrics.

and I might resemble that remark sometimes myself.

Had a rocket scientist attempt to jump start my Miata by putting positive to negative / negative to positive. One fried radio and fuseible link, it ran again. Never underestimate the power of stoopid.

Kinda sounds like a short to me.

old age, nasty vibration, or dumb moves as listed above

Hooking jumper cables up to a 91 Mercury Capri backwards? Yeah, I did that.

Short somwhere?

Oh, that's been said already.......

With the battery in the trunk it is possible the main + cable rubbed through on the chassis?

Thanks guys. I'll see if I can help him sort it out this weekend.