I just got my ranco controller today in the mail wired it up, etc....I have my chest freezer ready to go but I am not building a collar right away, just picnic taps at first. My question is how should I insert the temperature bulb thing(sorry dont know the name)? Sould I just drill a small hole in the compressor hump coming from outside? Also, does it just hang in there and go by the air temp inside the freezer or do I submerse it in a cup of liquid or something like that? suggestions please, thanks.