Question
I need to install a rain sensor on my system (new city law). I want to install a wireless. I have opened the control box and I see no rain sensor terminals identified. Where or how do I connect the rain sensor receiver? Thanks in advance for your help.

Answer
Hey Bruce I hope this helps. The way the rain sensor works, is by breaking the continuity in the common wire. Most sensors will have 2 wires. What you do is unhook your field common wire in your controller,(usually marked as a C). Take one of the wires on the sensor and hook it back to the common terminal that you just un-hooked. With the other wire from the sensor, wire nut it or attach it to the common wire that you pulled from the terminal. Sometimes my explanations make sense to me, but not to other people. I hope this makes sense to you, if not let me know. Thanks and have a great day.