Thermistor probe TIP should just protrude above top of clip
Clip should be pressed onto FIN and stay in place
That depends on Brand/Model fo fridge
1st FIN from right, 10th FIN from right, 20th FIN from right
Thermistor FIN Location is important.....fridge Thermostat is factory calibrated based on thermistor FIN temp feedback
SO what Brand/Model is your fridge?????