TM 5-5420-226-20-1 ( .— Symptom-66 DETAILED TROUBLESHOOTING PROCEDURE SUPPORT SYSTEM -  VEHICLE LIGHTING (Continued) Check basket-light switch harness (CKT    21)   for continuity from    connector at   basket disconnect to connector at   LIGHTING CONTROL switch. 1 Second Technician (Operator’s Station) l   Set   MASTER BATTERY switch OFF. l   Displace    master    control    panel    (page    10-33). l   Disconnect basket    light   switch    harness connector from LIGHTING CONTROL switch on   master control panel. l   Set  multimeter to  OHMS X 1 scale   and   “zero” meter,    or use   STE/ICE Test    No.   91   (page    4-83). l   Connect   black   probe   of  meter   to  contact   H  (CKT   21)  of basket-light switch harness connector at   LIGHTING cONTROL switch. First Technician (Commander’s Station) l   Connect red   probe    of  meter to  contact H  (CKT 21)  of basket-light switch harness connector at   basket disconnect. Second Technician (Operator’s Station) 1 . 0.^. .-_.. . .. L.=J ;ONTACT H (CKT 21) &b —— — ,? ,,, ,, -4’   -&.FU’ ‘ — .  . 1- ‘ m I^0-) LJ J’3 J .OO’O.O;, MASTER CONTROL PANEL ‘O ‘E (REAR VIEW 0 &-J\ 0 / ,“* l“ %! * @ “ONTACT “Hq’ _ (CKT    21) / L TA107334 ‘ 4-645