There is a wire that comes from the rear of the outside temperature gauge LCD panel that is not connected anywhere close to where the others are. I removed the knee bolster and was able to locate where the wire connects on the bottom. It is white underneath the exterior insulation and exits the cluster with two additional harnesses, in which both that disconnect right behind the cluster. I assume this is for the temperature reading that goes to the outside sensor.
It has an unusual looking connector and connects to a panel that is mounted underneath the dash.