Originally Posted by Greg H
Ok, I never heard of it and don't have a clue what it does.
It is used to join two or possibly more (up to what the metal "barrel" piece will accomodate inside it) electrical
wires together instead of a crimp style terminator cap. The nice thing about them is that they are completely reuseable as they have a screw that presses down and holds the wires together from the side, then you simply screw on the black plastic piece (that I was missing) onto the top of the metal barrel piece that is holding the wires together to insulate the new connection(s). You can try and reuse the crimp on ones but it take some patience and skill to open them up again where they will release the wires and so that you can do whatever you need to do then crimp them back on, assuming removing the crimp on terminator didn't damage the plastic beyond being useful. I hate having to cut the wires to get the terminating cap off because each time it gets shorter and shorter. This may not be a problem but in the case of the 7 way cable they only left about 2 inches of cable to work with, so if you have to cut it each time it wouldn't last long and it makes it hard to work with each time it gets shorter.