I want to measure the current output of a car alternator up to 100 amps.  I don’ need the voltage.  I can use my multimeter for voltage.  I bought a drok 200141 but it requires one side of the shunt to be connected to ground ( -) in the circuits return path.  Not possible seeing as I am using the shunt in the + output of the alternator ( one side of the shunt connects to the alternator + output and the other side of the shunt connects to the + of the car battery ).

I see there are  a few products ( 090912 or  <span class=”p-model”>090907 </span>) that seem to show the shunt as being independent of the meter power supply voltage.  Where can I get the instruction sheets for these two ?

Any other product recommendations?