Originally Posted by Dave9
Originally Posted by rooflessVW
Originally Posted by atikovi
I understand that but when a pigtail is 4-6 inches with 4-12 wires, it's not always possible.
Environmental slices are superior to soldering for repairs
Only if you're not any good at soldering. Mechanical/tube splicing offers no advantage over a good solder joint with a sealing heatshrink tube over it except speed, and repeatability if you aren't good at soldering (but depends on quality splice tool still) and often has disadvantages such as size, weight, cost.
There are those who want to claim problems like wire fatigue, oblivious to the fact that if soldered properly, there is less fatigue than mechanical splicing.
I'm not arguing do it one way or the other, rather either will work so do it the way you're best at.
The crimpless butt connectors is what "I think" is being called environmental slices and if so, they do use solder as part of the connection. The best way to use them is to proper butt weave the two wires together and then slide the connector over it. Heat with a flame to melt the solder into the wires and also to heat shrink the tubing and melt the final waterproof seals on the ends.