TM 5.3805-254-20-1
ORGANIZATIONAL TROUBLESHOOTING - 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 16.
Remove lower center instrument panel (page 2-424). Set multimeter to 20 vdc scale. Connect
red test lead to wire terminal (1) on wire connector (2) and black test lead to ground. Push
LIGHTS switch handle (3) up to on position. Check for 11 to 13 vdc on multimeter. Push LIGHTS
switch handle (3) down to off position. Disconnect test leads.
a. If multimeter does not read 11 to 13 vdc go to step 17.
b. If multimeter reads 11 to 13 vdc, go to step 22.
Step 17.
Open upper instrument panel (page 2-424). Set multimeter to 20 vdc scale. Connect red test
lead to wire connector (4) on LIGHTS switch (5) and black test lead to ground. Check for 11 to 13
vdc on multimeter. Disconnect test leads.
a. If multimeter does not read 11 to 13 vdc, go to step 18.
b. If multimeter reads 11 to 13 vdc, go to step 20.
Step 18.
Check 50 wire (6) at headlight circuit breaker (7) for loose, corroded, frayed, or broken condition.
a. If 50 wire (6) is loose, tighten nut (8) using 3/8-inch open-end wrench.
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