At the outside Telephone Box, install the suppressor inside the
telephone box or let it hang by the wires outside the box in a wet proof
Connect the large GREEN wire to the Telephone Ground Terminal or any
other good ground. Sometimes the electrical ground is nearby and you can
connect to it.
Each Telephone Line has two wires, usually red and green or black and
There are 4 smaller wires on the suppressor, one pair for one phone
line and the other to the other phone line (if you have a second line).
There is no polarity to the suppressor wires, you can connect any of the
wires to the phone lines and the suppressor will work as intended.
Keep the wires as short as possible and avoid sharp bends and kinks.