CONTINUITY TEST(1) Remove two screws and lens cover fromLH door marker light base.(2) Remove LH door marker light lamp from socket.(3) Set multimeter to ohms.(4) Check continuity through LH door markerlight lamp and note reading on multimeter.(5) If continuity is not present, replace LH door marker light lamp (para 7-31).Change 1 2-545TM 9-2320-365-20-1(1) Position main light switch to SER DRIVE(TM 9-2320-365-10).(2) If LH cab marker light lamp does not illuminate, go to step 8 of this fault.(3) Position main light switch to OFF(TM 9-2320-365-10).
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