So I just finally decided to put my head to installing a smart switch in my garage. Last 2 times I tried i got frustrated. So today, I put tone on all the wires I could and mapped out where they go. As best as I can tell, this is how it is wired...seems like a very strange way to me...but then all 4-way is strange. haha
The cloud at the top, represents what i'm not 100% sure of. The rest I toned out. I only includes the additional switch/light-fixture is because it was baffling me why there were so many 3-wire runs. Seems like one just went to the fixture to pass-through for another switch.
Anyway, I have a Zen23 and a Zen26, but would prefer to use the Zen23, as now I can tell I have Line and Load in same box. But looking for suggestions on the best way to wire this .