Two questions adout dual wire and heatshrinking tubing

[ilpostino]

I have seen TCSS sell dual wire by the foot in adition to heatshrinking tubing and I have some questions.
- What are the differences between the 22 and 24 gauge wires?
- Which heatshrink tubing do you use for the above wires?

[Silver Serpent]

22 gauge wire is thicker and less flexible. The larger the gauge number of wire, the thinner it will be.

I use 1/8" or 1/16" heatshrink for most of my wiring.