3. Remove the strain relief plate from the communications cord by untying the cord.
4. From the outside of the helmet, pass the entire communications cord though the hole in
the rear of the helmet shell, leaving only the microphone connector with the mounting
bracket and the grommet outside the helmet.
5. Insert the grommet into the hole. (If necessary, wet the grommet with plain water to
6. Install two screws to attach the microphone connector with the jack holder plate to the
7. Referring to Figure 4-29, retie the strain relief plate (3) to the communications cord (1) in
the same manner in which the cord was originally tied.
When properly tied, the knot (5) should be between the strain relief plate and the helmet
8. Attach the strain relief plate to the helmet shell using a screw (8), post (4), and spring
Steps 8a through 8d apply only to helmets equipped with a CEP-integrated
communications cord. If your helmet does not have a CEP-integrated
communications cord, proceed to Step 9.
8a.Referring to Figure 4-29, slide the ground lug (11) onto the communcations cord,
followed by the nut (12). Ensure that the unattached ground wire (13) is pulled through
the ground lug and nut as shown in Figure 4-12.3.
8b.Locate the wire on the communications cord to be attached to the CEP connector.
From inside the helmet, insert this wire through the connector hole in the helmet shell.
Referring to Figure 4-29, slide the spacer (10) over the wire on the outside of the helmet.
Resolder the connector (9) to the wire. Insert the connector into the hole, ensuring that
the spacer is against the helmet and the connector is against the spacer.
8c.Ensure that the ground lug is oriented toward the crown of the helmet as shown in
Figure 4-29. Tighten the nut using the 7/16-inch open-end wrench. Ensure that the nut
is tight enough that the ground lug will not rotate when pushed.
8d.Using long-nose pliers, carefully bend the ground lug to about a 45-degree angle from
the shell so that it reaches the unconnected ground wire. Insert the stripped end of the
unconnected ground wire (13) through the small hole at the end of the ground lug. Wrap
the exposed part of the wire once around the end of the ground lug. Solder the wire.
Bend the ground lug flush with the inside surface of the helmet shell.
9. Insert the communications cord leads (2) from the outside of the earcup through the