Wire Saver C-Wire Adapter

So, I see that the reviews are kinda all over the place on this one. BUT my personal experience on a plain modern high efficiency gas furnace with an electric split system AC is that it works just great. I had four low voltage conductors available, and needed a fifth for the common wire on my T-6 PRO Honeywell/Resideo stats. Wired it up, tried all the functions multiple times, no issues whatsoever. I even followed up with customers, no complaints at all so far. ONE thing to note tho, and this may be the reason for other odd reviews, the paper instructions for this one ARE VERY WEIRD. They provide NO schematic to just show you the way this should be wired to the components....instead they describe the wire marking process and the final wiring, including MOVING the wires to new locations from where they just instructed you to put them, as if they are writing to a six year old.... It's truly dumb. anyone who is reading this and considering buying this product would agree that a simple schematic would surely suffice. All good service from SupplyHouse.com as usual too