By the way, where should the original 250A fuse be? I should include it, yes?
There was some discussion on this here.
Originally it was wired in the middle of the series of lead acid batteries (If I recall correctly). In my case, with the split pack, I was thinking it could (or should) be wired to interrupt the positive lead on the way into the battery pack. Negative could work also and would solve my potential issue with the shorter length of the negative wire. However, I think the conventional wisdom is that placing it in the positive side of the circuit would afford more protection. Please advise as to best options and why.