Ajckids 062 - Heat Shrink Tubing 6" stick
Heat Shrink Tubing 1/16" Shrinks to 1/32". Add extra protection around splices, exposed wires and connectors with heat-shrinkable tubing.
One stick is about 6 inches long, and will be enough for 2-3 conversions.
Cut a small piece, slide it over your wire, solder the wire, slide this over your solder joint. Heat with match, soldering iron or heat gun (I use the side of my soldering iron).