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TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download

Page 360 of 1275

TM 9-2350-311-20-1 3-3 TROUBLESHOOTING CHART — CONTINUED v. B.O. MARKERS AND B.O. DRIVE LIGHTS (1) FRONT B.O. MARKER LIGHTS FAIL TO CIRCUIT — CONTINUED OPERATE; ALL OTHER LIGHTS OPERATE — CONTINUED CONTINUED FROM STEP D E 1. Reconnect lead 20 of bulkhead-to-headlights/ bilge pump wiring harness to headlight resilient mount wiring harness. 2. Disconnect bulkhead-to-driver’s instrument panel wiring harness from driver’s bulkhead. 3. Place a jumper wire from pin H to socket H (lead 459). 4. Place red lead of multimeters in socket E (lead 20) and black lead to ground. 5. Turn MASTER switch ON, place main light switch to B.O. MARKER position, and check for voltage. 6. Turn MASTER and main light switches OFF. Is voltage present? bulkhead to headlights/bilge pump Repair or replace lead 20/24 of bulkhead-to-driver’s instrument panel END OF TASK 3-260 wiring harness (para 8-47). wiring harness (parra 8-50).