Putting the ammeter in series means that all the current must run through the meter to get to or from the battery. If you unhook the battery cable, put one lead of the tester on the cable end and the other on the battery post. Then the meter will be in series. You can also buy an inductive pick up ammeter and lay it on the cable, it will read current through the insulation. Another type has a clamp that goes around the cable and reads inductively.
'65 C-10, 65 L-60, 65 C-80, 72 C-60 & and a bunch of old Chevy cars.
Never time to do it right, always time to do it over.
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