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 8.
Set multimeter to 20 vdc scale. Connect red test lead to terminal (1) on magnetic switch (2) 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 11
b. If multimeter reads 11 to 13 vdc, go to step 9.
Step 9.
Disconnect batteries (page 2-424). Check 14-8 wire (3) at primary magnetic switch (2) for loose,
corroded, frayed, or broken condition.
a.
if 14-8 wire (3) is loose, using 1/2-inch open-end wrench, tighten nut (4).
b. If 14-8 wire (3) is corroded, unscrew and take off nut (4), lockwasher (5), and wire
terminal (6) using 1/2-inch open-end wrench. Using wire brush, clean wire terminal (6)
and terminal (1) on primary magnetic switch (2). Place wire terminal (6) in position and
screw nut (4) and lockwasher (5) on to terminal (1) on primary magnetic switch (2).
2-174
