TM 9-2350-287-20-1
2-19. TROUBLESHOOTING CHART (continued).
h. LIGHTS (continued).
(11 ) ONE OR BOTH BLACKOUT (60) DRIVE LIGHTS
FAIL TO OPERATE. All other lights operate.
(continued).
CONTINUED FROM A
Replace blackout drive bulb (para 7-32).
Verify problem is solved.
B. 1. Loosen clamp, and remove headlight as-
sembly from headlight mount assembly.
2. Place red lead of multimeter in socket D
of headlight mount assembly harness and
ground black lead.
3. Have assistant set dimmer switch to low
beam and turn MASTER switch ON (refer to
TM 9-2350-287-10).
4. Check for 24 ± 3 vdc.
5. Have assistant set dimmer switch to high
beam.
6. Place red lead of multimeter on socket
E and ground black lead.
7. Check for 24 ± 3 vdc.
8. Turn MASTER switch OFF (refer to TM 9-
2350-287-10).
Is voltage indicted at both locations?
Repair or replace headlight assembly (para
7-31 ). Verify problem is solved.
C. 1. Disconnect wires 514 and 515 of harness
10921380 from headlight mount assembly
harness.
Continued on next page
2-173
