TM 5-3805-254-20-1
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
45.
ONETAILIGHT DOES 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.
Steps 2 thru 5 are typical for both right and left taillight.
Step 2.Using number one cross-tip screwdriver, unscrew and take out four screws (1) and lens
(2). Push lamp (3) in and turn counterclockwise and take out. Using multimeter set to ohms
scale and adjust to 0 ohms. Connect red test lead to contact (4) and black test lead to metal base
(5). Check for 0 ohms on multimeter. Move red test lead to contact (6) check for 0 ohms on
multimeter. Disconnect test leads.
a.If multimeter reads no continuity on contact (4) or (6), replace lamp (3). Put lamp
(3) into socket (7), alining pins with slots. Put lens (2) into stoplight/taillight assembly
(8). Screw in four screws (1) and tighten using number one cross-tip screwdriver.
b.
If multimeter reads 0 ohms, go to step 3.
Step 3.
Check socket (7) for corrosion or rusted out condition.
a.
If socket (7) is corroded, clean using emergy cloth. Put
lamp (3) into socket (7),
alining pins with slots.
Push in, turn clockwise and release. Put lens (2) into
stoplight/taillight assembly (8).
2-286
