TM 10-3930-659-34 2-26.    MULTIMETER (Con’t). CAUTION Before performing a continuity  test,  always  disconnect  the  forklift  truck  battery  ground cable  and  the  circuit  to  be  tested.    Failure  to  follow  this  caution  may  damage  the multimeter. (2)    Testing for Continuity. (a)    Zero multimeter [see subparagraph (1)]. (b)    Connect black and red probes (8 and 9) to both terminals of circuit being tested. TESTING AN ELECTRICAL CABLE TESTING A BULB TESTING A SWITCH 2-17