I have a Rain Bird ESP-Si, all 6 zones are working, however, zone 3 is also activated simultaneously with every other zone. I had several loose wire connections and during rewiring must have switched some wires. Please help. Thanks!
You're not going to get an answer from anyone telling you exactly what wire/wires you messed up. If you didn't have a problem with number 3 before fiddling with the wires I suggest you start over. If the wires are color coordinated it's a simple process. Simply use the white wire for the common wire then each numbered valve has it's own color.
If you have a master valve I would suspect a problem with valve 3 and not the wiring.