Either cable. We actually use a shunt at work. A shunt place in series between the battery and cable can show amp draw on a digital volt meter. You can also use an amp meter. But the problem is you may blow the milliamp fuse in the meter if the draw exceeds the fuse limit. Doug
The fuse in most ammeters is 10A, if you have more than a 10A parasitic draw something is seriously wrong.
The face of your meter ought to be labeled for max current in ammeter mode.
