Good questions! smile

Yes, modified the freezer by adding the wood collar. This way, it doesn't damage the freezer and if I wanted to revert/sell it, I could easily.

The lid is mounted on the wood collar in the back. Yes, I caulked it. the electronic devices are:
blue is thermostat regulator. I set that so that the freezer doesn't get down to freezing. Beer will freeze! So I set it to 35 degrees. Plenty cold enough.

black is a thermometer. I use it to verify that the blue (Johnson Controls device) is accurate and that in fact it's not freezing.

You should come down some time. I just brewed a clone of Fat Tire. Good stuff! Should be ready in 2 weeks.