nut (17).
c. Siren Assembly Installation
TM 9-2320-280-20-3
12-185. SIREN AND WARNING LIGHT INSTALLATION (Cont’d)
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Using fabricated siren bracket (1) as a template, locate, mark, and drill six 0.343-in. (8.7-mm)
diameter holes (2) in right side of roof (3).
Locate, mark, and drill 0.75-in. (19-mm) diameter hole (4) in right side of roof (3).
Cut roof panel insulation (5) away for access to mounting hardware.
Cut siren lead (28) to a length of 5.0 in. (12.7 cm).
Install shell (27), sleeve (26), and terminal (25) on siren lead (28).
Install gasket (11), plate (10), and panel (15) on siren bracket (1) with four capscrews (16),
lockwashers (8), and nuts (7).
Install siren assembly (6) and fabricated ground wire “I” (9) on siren bracket (1) with two
capscrews (16), lockwashers (8), and nuts (7).
Install siren bracket assembly (1) on roof (3) with four screws (14), two screws (18), six
washers (13), and locknuts (12).
Connect connector (24) of fabricated wire "H" (23) to siren lead (28) and route wire “H” (23) and
ground wire "I" (9) through hole (4).
Split grommet (20) and install grommet (20) in hole (4).
Install siren wires (23) and (9) on siren bracket (1) with clamp (19), washer (22), screw (21), and
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