I have both manuals, and they both show two wires. I have three. Controller says "connect both rain sensor delay wires to the terminals marked rain sensor". I have three. I need to know which ones to use or do two go together.
I have a rainbird stpi-900 with a rainbird rsd-bex sensor. The controller has two spots for wire hookup but the sensor has three. A black, blue and red. Which goes where? Thanks for any help.
