just to let everyone know this issue was resolved not long after my last post back in December of last year
in my case it was the battery cables / not the terminal connections but the connection of cable to the terminal
connectors ..under the chrome plate that you cannot see through after removing I found corrosion and all kinds
of evidence of loose connection/arcing on the negative side (positive side was not much better) I cut the cables back a couple
inches and reattcted to new terminals and bam I have yet to have any intermitten issues with the ZJ dying since.
I know there are other issues that can cause this but after all my efforts it was just connections to the battery
..good luck to all with this issue.