I would definitely recommend relocating the temp sensor. I installed ours on the side of the cabinet at the foot of the bed. It does a much better job from this location.
I changed my PP75 connector over to an SB50. I like them much better. I use mine for a portable 400 watt solar panel. I will eventually add a DC-DC charger on the truck side that will connect through the SB50 connector as well.