TM-9-2350-274-BD
M109/M110/M578 VEHICLES HOWITZER, MEDIUM, SELF-PROPELLED FULL-TRACKED
TECHNICAL MANUAL; OPERATORS, ORGANIZATIONAL DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
JANUARY 1984
TM-9-2350-274-BD - Page 158 of 219
TM 9-2350-274-BD
COMMUNICATIONS SYSTEM
Procedural Steps (Cont):
4.
H-189 Handset:
■
a.
Insert and connect the four wires through the handset to the black, white, green,
and red wire connections on the switch.
b.
Hook the black wire to one of the inside jacks on the Soviet chest plate and
the white wire to the other inside jack. (Points A and B.)
c.
Hook the green wire connection to one of the outside jacks and the red wire to
the other outside jack (points C and D).
5.
CVC Helmet:
a.
Remove plastic earphone cushion and receiver retainer to gain access to the
switch assembly.
11–12
Change 3
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