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

Page 349 of 1275

TM 9-2350-311-20-1 CONTINUED FROM STEP A I B 1. Install inoperative headlight assembly (para 8-21). 2. Disconnect bulkhead-to-driver’s instrument panel wiring harness from dimmer switch. 3. If low beam is inoperative, place red lead of multimeters on pin E (lead 18) and black lead on pin G (lead 16). 4. Place dimmer switch in low beam position and check for continuity. 5. If high beam is inoperative, place red lead of multimeters on pin F (lead 17) and black lead on pin H (lead 16). 6. Place dimmer switch in high beam position and check for continuity. Is continuity present? I Replace dimmer switch (para 8-17). Wiring Harness (para 8-47). Repair or replace lead 17 and/or 18 of bulkhead-to-headlights/bilge pump END OF TASK 3-249