I've been ignoring this 'issue' for a little while, but now have time to see if I can figure it out. My bmv-712 monitor seems to read current on the low end or approximately under half of what I expect it to display. One example is my maxxair fan should be drawing ~-0.9A at a specific speed, however the monitor displays -0.36A. The same goes for the other accessories I have and I'm aware that listed startup current is typically higher than constant draw. I can't take a photo at the moment, but I'm fairly confident I have things set up correctly. There are no loads between the battery negative and the shunt and it's positioned in the correct orientation.
Any thoughts on what's happening? I'll provide a photo when I can.