(1) Position main light switch to SER DRIVE
(2) If RH cab marker light lamp does not
illuminate, go to step 8 of fault.
(3) Position main light switch to OFF
(1) Remove two screws and lens cover from RH
door marker light base.
(2) Remove RH door marker light lamp from
(3) Set multimeter to ohms.
(4) Check continuity through RH door marker
light lamp and note reading on multimeter.
(5) If continuity is present, replace RH door
marker light lamp (para 7-31).
Change 1 2-556.1