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Page Title: 2. HEADLIGHTS, CLEARANCE LIGHTS, HORN, WORK LIGHTS, DIMMER, OR BEACON LIGHT DO NOT OPERATE (CONT)
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TM 9-2320-364-20-2 2-1156 2.  HEADLIGHTS, CLEARANCE LIGHTS, HORN, WORK LIGHTS, DIMMER, OR BEACON LIGHT DO NOT OPERATE (CONT). 9. Go to Step 10 of this Fault. NO 22 to 28 vdc register on 24   vdc voltmeter indicating   ENGINE switch is OK. 10 to 14 vdc register on 12 vdc   voltmeter indicating   batteries are OK. Domelight operates indicating   10 to 14 vdc present on   wire 1084 at BLACKOUT   LIGHTS switch. Wire 1189 between splice at   blackout service select   switch and 24V relay R12   OK. Wire 1872 between ENGINE   switch and IGNITION circuit   breaker CB10 OK. IGNITION circuit breaker   CB10 OK. Wire 1872 between IGNITION   circuit breaker CB10 and   24V relay R12 OK. Wire 1435 between 24V   relay R12 and ground OK. 24V relay R12 OK. Wire 1430 OK. Wire 1189 between 24V   relay R12 and magnetic   switch R28 OK. Wire 1435 between magnetic   switch R28 and ground faulty. Wire 1435 between magnetic   switch R28 and rectifier M52   faulty. Rectifier M52 faulty. Magnetic switch R28 faulty. Wire 1175 faulty. KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION Voltage test. If any vdc are not present, magnetic switch R28 will not operate. WARNING Are any vdc measured on wire 1435 between magnetic switch R28 and a known good ground? Go to Step 11 of this Fault. YES Read   WARNING on Page 2-1157

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