Garmin, but not sure how much that matters
I ran wires as suggested for the Garmin heated regulated pitot however my assumption is that all of them require power, and I could use the same wires.
I ran two 12 AWG wires and a 24 AWG signal wire from the mast all the way to the root. That brings the ground back to the panel which Garmin suggested and provides that signal wire for the heat regulation as well.
Status: Tail mostly complete, Wings complete(ish), Working on: Fuselage Kit, Finish kit shipping soon! (EXP119), Engine ordered