TM 9-2320-302-20 0010 00-8 Table 1. Electrical System Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Turn Signal and Stoplight Circuits - Continued 3.  Flasher Lights Do Not Operate. 1.    Inspect light bulbs. Replace bulbs if broken or defective (WP 0088 00). 2.    Disconnect   left   flasher   relay from connector. Check for +24 VDC at connector 30. If +24 VDC is present, go to step 3. If voltage is not present, repair lead 421 (WP 0119 00). 3.    Check  for  continuity  between connector 86 and ground. If  continuity  is  indicated,  go  to step 4. If continuity is not indicated, repair ground lead (WP 0119 00). 4.    Check for +12 VDC at connector 85. If +12 VDC is present, go to step 5. If voltage is not present, repair lead 60 (WP 0119 00). 5.    Set  turn  signal  switch  in  turn mode.    Install    jumper    leads between   connectors   30,   85, and    86    to    their    respective connectors at left flasher relay. Check for +24 VDC at flasher relay connection 87. If +24 VDC is present, go to step 6. If voltage is not present, replace left flasher relay (WP 0071 00). 6.    Set  turn  signal  switch  in  turn mode. Check for +24 VDC at trailer receptacle connectors. If   voltage   is   not   present,   repair leads (WP 0119 00). 4.  Turn Signal Lights Do Not Operate. 1.    Inspect light bulb. Replace bulb if broken or defective (WP 0088 00). 2.    Remove  lamp  from  defective left turn signal light. Check for continuity between contact points. If  continuity  is  indicated,  go  to step 3. If continuity is not indicated, replace lamp (WP 0088 00). 3.    Remove    signal    light    lamp. Check  for  continuity  between socket and ground. If  continuity  is  indicated,  repair lead    60.    If    continuity    is    not indicated, repair ground lead (WP 0119 00). 5.  Turn Signal Indicator Light Does Not Operate, But Turn Signals Operate Normally. 1.    Inspect light bulb. Replace bulb if broken or defective (WP 0061 00). 2.    Disconnect    lead    60A    from warning  light  bar.  Check  for +24 VDC at lead 60A. If +24 VDC is present, troubleshoot warning light circuit. If   voltage   is   not   present,   repair lead 60A (WP 0119 00). Dome Light Circuits 1.  Dome Lights Do Not Operate. 1.    Check   dome/auxiliary/flasher lights 15A fuse. Replace 15A fuse if defective (WP 0071 00). 2.    Disconnect    lead    420J    from dome/auxiliary/flasher 15A fuse.  Check  for  +12  VDC  at lead 420J. If +12 VDC is present, repair lead 41 (WP 0119 00). If voltage is not present, go to step 3.