TEST OR INSPECTION
Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Put EMERG MASTER and ROOF EMERGENCY LIGHTS switches to off
position (WP 0004). Turn Service Drive Lights Off (TM 9-2320-347-10). Turn battery
disconnect switch to OFF position (WP 0007). Remove non-operating warning light
from passenger side or driver side cab roof lightbar (WP 0346). With a test lead set,
check for continuity across ground wire (white) from non-operating cab roof lightbar
warning light connector terminal 1 to a known good ground.