(1) Remove two screws and lens cover from RH
cab marker light base.
(2) Remove RH cab marker light lamp from
(3) Set multimeter to ohms.
(4) Check continuity through RH marker light
lamp and note reading on multimeter.
(5) If continuity is not present, replace RH
cab marker light lamp (para 7-31).
Change 1 2-553
(1) Position main light switch to SER DRIVE
(2) If RH door marker light lamp does not
illuminate, go to step 4 of this fault.
(3) Position main light switch to OFF