Thanks, I forgot about the temp sensor. I am used to having the controller where I can't see it (no display on my other ones anyway)and get the info I need from the Trimetric.
Both my battery banks are now up front where I can have both controllers if I put the Eco there. That would allow swapping either controller to the other bank to put both arrays on one bank if it got lower than the other by a bunch.
I might put the two 12s on the back bumper though and make some other changes which would mean different locations for the controllers. With your info on the Eco display, now I have more options.