[imacdaddy757]

WinkyDink, I use "Spaghetti" sleeving for the ends of caps and resistors in most places, heat shrink in a few other places. Spaghetti is available in two sizes from TubesAndMore online. You want their smaller size for most applications, that slides over a 20ga wire.
I'm a safety nut. I'd use a polarized plug, but pay attention when you trace your circuits so you get the larger terminal side of the cord running to the Ground inside the set. If in doubt, ask questions here or at a local radio club. And there is advice online about adding a glass fast-blow fuse to old sets. I wish I'd done so on sets I refurbished earlier, but will be adding a fuse to my sets beginning with the one I'm working on now.
Clarence