TM 5-3805-254-20-1
ORGANIZATIONAL MAINTENANCE - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
23. BOTH HEADLIGHTS DO NOT WORK - 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 26.
Test 52 wire (1) as follows: Set multimeter to 20 vdc scale. With assistant, connect red test lead
to wire terminal (2) on wire connector (3) and black test lead to terminal (4) on junction box (5).
Check for 0 ohms on multimeter. Disconnect test leads.
a.
If multimeter reads no continuity, 52 wire (1) must be replaced. Notify Direct Support
Maintenance.
b.
If multimeter reads 0 ohms, push wire connectors (3 and 6) together until locked. Place junction
box cover (7) in position and screw on two wing screws (8) and tighten. Install center instrument
panel (page 2-424). Connect batteries (page 2-424). Go to Malfunction 24, ONE HEADLIGHT
DOES NOT WORK (page 2-194).
NOTE
Steps 27, 28, and 29 apply to malfunction of both low beams.
To ensure correct multimeter reading, headlight beam selector switch (9) may have to be pressed to direct current to
terminal being tested.
2-190
