TM 5-3805254-20-1
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
24. ONE HEADLIGHT DOES NOTWORK - CONTINUED.
WARNING
Although KEY SWITCH must be on and battery ground cable connected to test electrical circuit
voltage, turn off KEY SWITCH and disconnect battery ground cable before doing resistance tests
or replacing parts. This will keep you from getting shocked and prevent damage to parts and
equipment.
NOTE
Scrape painted surfaces to bare metal before connecting test leads to ensure correct multimeter
readings.
Step 11.
Test headlight harness (1) as follows: Set multimeter to ohms scale and adjust to 0 ohms. Connect red
test lead to wire terminal (2) on wire connector (3) and black test lead to wire terminal (4) on wire
connector (5). Check for 0 ohms on multimeter. Move red test lead to wire terminal (6) on wire connector
(3) and black test lead to wire terminal (7) on wire connector (5). Check for 0 ohms on multimeter.
Disconnect test leads.
a. If multimeter reads no continuity on wire terminals (4 or 7), head-light harness (1) must be
replaced. Notify Direct Support Maintenance.
b. If multimeter reads 0 ohms, install headlight (page 2-807) and go to step 12.
Step 12.
Test 11 wire (8) as follows: Disconnect batteries (page 2-424). Unscrew and take off two wingnuts (9) and
junction box cover (10). Connect red test lead to wire terminal (11) on wire connector (12) and black test
lead to terminal (13) on junction box (14). Check for 0 ohms on multimeter. Disconnect test leads.
a. If multimeter reads no continuity, 11 wire (8) must be replaced. Notify Direct
Support Maintenance.
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