Stoopid Jeep
YJ Enthusiast
If I must use a butt connection it's always uninsulated with adheasive lined heat shrink.I think if you saw what I use you would agree they are a lifetime repair.
As a rule I solder. It's cleaner looking ...and I got nothing but time.
Except on the trail. I'll use duck tape and speaker wire. What ever it takes to get home and make a proper repair.