I've bought some before that have a cheap plastic sleeve that seem to "break" when I crimp them and slide off easily... is there any brand you order online or do you have a shop nearby that you get them from (home depot, autozone, etc). I tend to pick them up wherever I happen to be at... whether it be walmart or autozone
I tend to remove the "cheap plastic sleeve" and crimp the "raw" metal onto the wires. But before I crimp, I slip on the shrink sleeve tubing. Then when crimped, I cover the crimp with the shrink sleeve and heat up the sleeving - sealing up the joint.