Of course I'm not recommending cutting the ISO connector off, but I think you may be confusing forethought with premonition. I don't think anyone ever thinks they're doing things incorrectly, until of course thing don't work as they've thought they should. In that case loosening & tightening screws beats cutting, removing shrink wrap, re-fitting with shrink wrap tube, resoldering and re-shrinkwrapping.

I make no argument that soldering & s/w can be beat for reliability and longevity. I think the screw termimals are more reliablle than crimp connectors long term and if they do fail they only require a screwdriver to fix, not _another_ trip to Rat Shack to get more because you can't find your last batch in the junk drawer.

Since I had the off 'Thump' as well as some ground loop noise, I've rewired my car at least four times and I've done it all three ways.

-Zeke