[DPJ]

If you want a better option to secure the wire, use a Hex M2 grub screw - 2x5mm is what I use. Strip the wire the same as you would if using the metal ferule and place it through the plastic guide hole. Then place the braid in the guide so that about 3mm is sticking out the top. Be sure the wire is under the braid, not on top, and insert the screw as you would insert the ferule. Screw it in 2/3 of the way and it's secured until you take it out. I started doing this to every car I tweak and I'll never use those metal ferules again! They come lose sometimes and the screws don't.