My RV came with the BVM-712 Smart. Everything was connected to the correct side of the shunt except the solar cables are connected directly to the batteries via a 30A fuse and controller. Several owners have said the negative also needs to be connected to the frame. So I went to the Tiffin factory and asked them to correct it under warranty. They told me Victron sales and engineering came in and told them they are doing it correctly. I showed him the manual that says to even connect the Solar to the frame. He wouldn’t do it saying Victron has confirmed they are doing it right. I was hoping to hear from Victron on who is right.