I have a 9 zone RainBird ESP 12-LX Plus and purchased Rachio 16 zone.
I looked at my current wiring and I understand how to connect everything. The only confusing part is that I have one jump wire connected between zone 1 and zone 3. So, Zone 1 has one wire coming in, and a second wire going out to zone 3. Zone 3 has only the wire that is coming from zone 1. All other zones have their own single wire.
In my yard, zone 1 and zone 3 are totally different area of the yard. Turning on one zone does not turn on the other zone.
I don’t understand how this is working and how can I set this up on rachio. Here is a picture of my current wiring. You see the yellow wire that is connecting zone 1 to 3.