[Ron Ramirez]

I get my heat shrink locally, at the only remaining electronics distributor in Evansville (Hutch & Son), in five foot lengths. It comes in clear, white, yellow, red, green, blue, and black. I do not buy the clear, but I get the other colors. When slipped over the wires and shrunk, it looks very authentic.

You can probably buy it online from one of the distributors such as Mouser, Allied, and/or Digi-Key.