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. (3) Testing  for  Shorts.    A  short  (or short   circuit)   occurs   when   two   circuits   that should  not  be  connected  have  metal-to-metal contact  with  each  other.    A  short  also  occurs when  a  circuit  that  should  not  touch  ground has metal-to-metal contact with ground. TESTING FOR SHORTS (a)    Zero multimeter [see subparagraph (1)]. (b)    Connect  black  probe  (8)  to  one  circuit  and  red  probe  (9)  to  either  a  ground  or another circuit. (c)    Read digital readout (7) and interpret the results as follows: 1.    If digital readout (7) indicates 0 (zero), circuits are shorted or circuit is grounded if TA708028 testing to ground. 2.    If digital readout (7) does not indicate 0 (zero), circuits are not shorted. 2-19 3.    If digital readout (7) jumps or flickers, circuits are shorted or grounded intermittently. 2-19