Zone Wiring issue

@ThatGuy - what is cut off at the bottom of the picture appears to be an Add-A-Zone device:

They are normally put in to deal with a broken wire where the location can’t be determined. Therefore zone 4 and 5 are not wire nutted together, but are connected to the Add-A-Module. There should be a corresponding device out in the field.

Can pictures of the current Rachio wiring be posted?

I’d hook Rachio with the Add-A-Zone module just like it was in the Hunter.