I just got the BMV 712. I'm in the processing of wiring everything up. I have a Lead Acid battery for my pickup in the engine bay. I have a 100mA lithium in the bed as my auxiliary. So my question is can the 712 monitor BOTH batteries or do I need to pick one? It shows a diagram for 2 batteries in the installation but I could find nothing on monitoring 2 different types of batteries. I have the shunt installed between the battery and my dc fuse panel before heading to chassis ground. Would it be fine to have the battery in the engine bay to chassis ground rather than connecting to the shunt and use a bunch more wire? Any help would be appreciated. See the picture on how I planned my system. I don't show the 712 connected to the starter battery since I wasn't sure if it could work.