Before you read this – I’m also a novice so there may/will be better ways than this.
I haven’t got any schematics but attached is a picture to show what I’m doing (I thought a picture would be better than a sketch I threw together).
Opologies for the rough sketches on the second picture but think it’ll make sense.
I used 2 110mm 12v PC fans available from any computer shop ($5 each). I was going to buy ones with blue LED’s in so light up the fridge but scrounged these from work so didn’t cost me. (I may buy a cheap USB type light and connect that)
The black metal piece you see is a standard computer rack cover that you can buy for $10 or so. You can get these with the fan holes in already and also a cover so you cant get fingers in there but again I was given one so just cut the holes in myself and if I put my fingers in there once I wont do it again
You’ll find it is a perfect fit across the width (19″) of the keg cooler and to screw in at each side without having to screw or glue onto the fridge itself.
The fans are facing different directions. One pulling air ‘out’ of the freezer and one pushing air ‘in’ to the freezer (so the air is continually rotating.)
The wires will be hidden better when I put a liner on the insides where the pink stuff is.
I also have one slightly smaller fan (not shown) that will fasten to the top of the keg cooler and blow cold air up into the tap itself to keep the lines cold. Not sure how I’m going to fasten this one yet so cant say.
These are powered by an old PC Desktop power supply that is sat on top of the freezer outside the cooler itself (the wires go through a small hole pushed through the pink stuff that will be filled with expanding foam). there are other posts on how to connect them up but it’s an easy black/red wire and that’s it.
I’ll add that I haven’t put my tap or a keg in yet so not 100% it’ll hold it’s temperature (I like my beer COLD) but I’m hoping it will. I’ve had it running with some bottles in and after a couple of days it was plenty cold enough so hoping it’ll be the same for a keg.
Hope this helps but sure someone will be along to correct me or explain better.
Sorry – just noticed that you cant read the text on the picture I made as when uploading it makes them small pictures Hopefully the above text and picture help though.