Sorry! a) 3/32" is what I mainly use b) The power supply uses 1/8" and 3/16" The 3/16 is special: it is 3:1 shrink rate instead of 2:1 AND it uses UL-approved heat-release adhesive coated tubing. As it shrinks, the "hot-melt glue" forms a water-tight barrier. This is NOT needed on other modules. And PLEASE use a heat-shrink gun! No Bic lighters :( Paul S.
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Ignore last, real answer
2002-03-11 by Paul Schreiber