BLACKOUT STOPLIGHT(S) DO NOT OPERATE. (Cont) -725550237

TM 9-2330-385-14

Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical

circuits, a direct short may result. Damage to equipment, injury, or death to personnel may occur.

Resistors mounted on exterior of junction box assembly reach very high temperatures when power is

applied to circuit. Avoid touching or contacting resistors when working in or around junction boxes.

Failure to comply could result in injury to personnel.

VOLTAGE TEST

(1) Connect positive (+) multimeter lead

to front junction box, terminal 18.

(2) Connect negative (--) multimeter lead

to a known good ground.

(3) Turn on BLACKOUT LIGHTS selector

switch (TM 9-2320-364-10).

(4) While assistant fully applies brake

pedal, observe multimeter.

(a) If 22 to 28 vdc are not present,

perform Steps (5) and (6) below

and replace front junction box

(b) If 22 to 28 vdc are present, front

junction box is OK.

(5) Release brake pedal.

(6) Turn off BLACKOUT LIGHTS selector

switch.

(7) Install front junction box cover

and tighten four captive screws.