TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
Page 362 of 1275
TM 9-2350-311 -20-1 3-3 TROUBLESHOOTING CHART — CONTINUED v. B.O. MARKERS AND B.O. DRIVE LIGHTS (2) REAR B.O. MARKER LIGHTS FAIL TO OPERATE; CIRCUIT — CONTINUED ALL OTHER LIGHTS OPERATE — CONTINUED CONTINUED FROM STEP B C 1. Install B.O. marker assembly (para 8-25) 2. Disconnect lead 24 of bulkhead-to-driver’s instrument panel wiring harness from taillight lead assembly. 3. Place red lead of multimeters in lead 24 and black lead to ground. 4. Turn MASTER switch ON, place main light switch to B.O. MARKER position, and check for voltage. 5. Turn MASTER and main light switches OFF. Is voltage present? Replace taillight lead assembly Repair or replace lead 20/24 of bulkhead-to-driver’s instrument panel wiring harness (para 8-50). END OF TASK (para 8-25). 3-262