Sorry to hijack this topic.
I had my original display, which stayed lighted when just turned on. Then, when driving or on hookup I had the G or plug icon on the right bottom, and the battery showing middle top.
I have installed the new(er) display with index C, and now, when driving or on hookup, I have the G or icon both right under and middle top.
Someone knows what could cause that? I have tried to fiddle in the engineering menu, but there are not much options to play with. Selecting or deselecting extra battery doesn't work.
Don't think it affects the functions, as the batteries still charge completely, and it shows load or current draw.
I don't really worry for now, but if someone would know, I'd like to hear.
BTW, it was a second hand display.