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. VOLTAGE TEST (1)   Remove relay R2 (Para 7-33). (2)   Set  multimeter  select  switch  to  VOLTS DC. (3)   Connect  positive  (+)  multimeter  lead  to relay R2, terminal 86 cavity. (4)   Connect negative (-) multimeter lead to a known good ground. (5)   Set     MAIN     POWER     switch     to     ON position (TM 10-3930-669-10). (6)   Set   engine   switch   to   ignition   position (TM 10-3930-669-10). (a)   If    there    are    not    22    to    24    vdc present, go to Step 5 of this Fault. (b)   If  there  are  22  to  24  vdc  present, wire 34 is OK. (7)   Set    MAIN    POWER    switch    to    OFF position. (8)   Set engine switch to off position. 2-125