Never work on your sprinkler timer while it’s plugged in since you could get shocked.
Some timer models may have the power wires in a different access panel along the wall.
If you don’t have any tape or labels, many sprinkler wires are differently colored so you can tell which wires control an area.
Many times, you can use the top screw again to hang your new sprinkler unit but the bottom screw may not be in the same place.
Most units come with 6-12 stations built into the system.
If you’re mounting on drywall or concrete, use anchor screws to hold your timer securely. If the unit plugs directly into the wall, make sure the cord can reach the outlet.
If you have a white wire, attach it to the port labeled “Common. ”
If your wires are in an outdoor timer unit, make sure to use waterproof wire caps.
If the sprinklers aren’t working, turn off the power again and check for loose wire connections inside the unit.
Follow the manufacturer’s instructions for your model to learn specific details on how to set the schedule. If your timer uses a wi-fi connection, you can set the program from your computer or mobile device.