Im gonna have 2 probes, one for the thermostat and one for the thermometer. The thermostat probe is on the heating tape between the tape and the wall of the cooler and the thermometer is placed on the opposite wall towards the upper/center. I just need to match up the thermostat with the thermometer but I was wondering if the probe for the thermostat should be between the cooler and the heat tape or on the outside of the heat tape open to the center of the cooler.