Hunter Soil-Clik Owner's Manual page 11

Connecting the Probe to the Module
Use only 18 AWG (1 mm ) or larger direct burial rated wire,
2
up to 1000' (300 m) from the module.
Connect the gray/black probe wires to the two gray
module wires with waterproof connections (polarity is not
important in this system).
Avoid high-voltage lines or other sources of
electrical interference.
White
Yellow
Module
Probe
Installation
Gray
connection
Gray/Black
connection
11