TM 10-3930-669-20 WARNING Remove all jewelry such as rings, dog tags, bracelets, etc.  If jewelry contacts battery terminal, a direct short may result in instant heating of tools, damage to equipment, and injury or death to personnel. CONTINUITY TEST (1)   Set multimeter select switch to OHMS. (2)   Check     continuity     between     ammeter, terminal G and a known good ground. (a)   If    there    is    no    continuity,    repair gauge  ground  wire  (see  schematic Appendix F). (b)   If  there  is  continuity,  gauge  ground wire is OK. VOLTAGE TEST (1)   Set  multimeter  select  switch  to  VOLTS DC. (2)   Connect  positive  (+)  multimeter  lead  to ammeter, terminal S. (3)   Connect negative (-) multimeter lead to a known good ground. (a)   If    there    are    not    22    to    24    vdc present, repair wire 12 (see schematic Appendix F). (b)   If  there  are  22  to  24  vdc  present, replace ammeter (Para 7-9). (4)   Install instrument panel (Para 7-8). 2-135