TM    10–3930-643-20 ELECTRICAL  SYSTEM  TROUBLESHOOTING  AND  MAINTENANCE. 5-7. Light   System   Troubleshooting. MALFUNCTION TEST OR INSPECTION CORRECTIVE   ACTION d. REAR  WORK  LIGHT(S)  DOES  NOT  OPERATE. Step   4.   Test   the   continuity   of   the   rear   service   lights   switch.   Turn rear   service   light   switch   to   ON   position.   Connect   the   multi- meter   to   the   two   terminals   at   the   back   of   the   switch. If   the   multimeter   needle   does   not   move,   the   circuit   does   not   have continuity.   Replace   rear   service   lights   switch,   refer   to   paragraph 5-20. Step   5.   Test   the   rear   service   lights   wire   assembly.   With   the   interme- diate   harness   disconnected   from   the   instrument   panel   harness (refer   to   step   3),   connect   the   multimeter   to   Terminal   B   and   to Pin  J. If   the   multimeter   needle   does   not   move,   identify   as   a   defective   wire and  contact  Direct  Support. 5 - 33

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