I've got this great Blue Sea battery monitor @ the chart table, but the old analog meters on the Bass panel are just not as exact and easy to read as the new digital meters. I've found these cool and inexpensive digital ones (see below) that I'd like to try, just for kicks. Do I need to parallel the shunts for these meters and the one for the Blue Sea meter, or can I run them in series? They aren't as important (accuracy wise) as the Blue Sea meter, so if I lose a bit of accuracy, no sweat. Thanks.