TM 10-3930-659-20 2-27. 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 con- nected 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 testing to ground. 2. If digital readout (7) does not indicate 0 (zero), circuits are not shorted. 3. If digital readout (7) jumps or flickers, circuits are shorted or grounded intermittently. TA706723 2-18