Quote: Originally Posted by
DarquePervert 
I would take the extra step of using electrical tape or heatshrink tubing (preferred) over the plastic barrel for an additional layer of protection. The plastic barrels have a tendency to slide back and forth along the wire.
That should not happen, as the barrel should be crimped, reducing its size so it cant move back over the thicker part of the terminal, but yes, I do agree some of them dont behave as they should and if you have some heatshrink, ditch the barrel piece altogether and just heat shrink it.