I was finally able to install the ATC board with the Off/Auto button in the center. I actually did the ATC conversation with @Mpgrimm2 harnness, back in September, but I was using the regular single zone bezel. Now that the holidays were over and I had a little spare money, I had Mpgrimm2 from M2mods modify the Dual Zone control board to work like a single Zone ATC bezel. As always, a great mod!!