TM 9-2330-227-14&P
PREPARATION FOR USE - CONTINUED
CHECKING LIGHTS
WARNING
Do not operate semitrailer with burned out, missing, or damaged lights. Failure to be
seen could result in injury to personnel.
Turn on service drive lights in towing vehicle, and check that amber and red clearance
1.
lights (1) and (2) are lit.
Have an assistant apply service brakes while you check that both brake lights (3) are lit.
2.
Check that both brake lights (3) go off when brakes are released.
Operate left turn signal, and check that left turn signal light (4) flashes. Operate right
3.
turn signal, and check that right turn signal light (5) flashes.
Select blackout lights in towing vehicle. Check that amber and red clearance lights (1)
4.
and (2) go out and blackout marker lights (6), (7), and (8) go on.
Have assistant apply service brakes while you check that blackout stop light (9) becomes
5.
lit and goes out when brake pedal is released.
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