If present, connect the black and yellow wires
in the same way. If these are missing, merely
connect the black and yellow spade lugs to the
“B” and “Y” screws. This will keep them from
shorting to the other wires.
Place the modular jack cover on the base.
Plug in the telephone line cord.
To locate the modular jack in the new location:
Obtain the proper length of 4 wire telephone
cable.
Install the modular jack as shown in Figure 7-3 using the 4 wire telephone cable in place of the telephone
service wires.
Run the 4 wire telephone cable to the old type hard wired jack.
Strip 1/2” of insulation off of the green telephone cable wire and bend the stripped portion into a “U”.
Loosen the screw holding the green telephone service wire. Connect the two green wires and tighten the
screw.
Fasten the red telephone service wire to the red telephone cable wire in the same way.
Fasten the remaining wires in the same way. If the black or yellow telephone service wires are missing,
fasten the telephone cable wire to the empty screw to keep it from shorting to the other wires.
Connecting to Old Four Connector Jacks
If your telephone service wiring terminates in a four connector jack as shown in Figure 7-4, you may replace
this jack in a manner similar to replacing the hard wired jack. Be sure that the green telephone service wire is
connected to the red modular jack wire and the red telephone service wire to the green modular jack wire. You
may instead purchase an adapter which converts the old four connector jack to a modular jack. The USOC
(Universal Service Order Code) for this adapter is RJA1X.
Figure 7-4
-31-
Figure 7-3
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