After setting up my system in my workshop and having the battery percentage showing in the bottom left corner of the GX Touch 50 I have now installed it into my 5th wheel trailer and no longer have the percentage showing. What part of the system supplies that? The possibilities I have are the 500 Amp Smart Shunt, the Smart Battery Sense, VE.Bus Smart Dongle, Smartsolar MPPT 150/70 and the Multiplus 12/3000/50. Any ideas on how to get that back?