Rayamash.. I also installed a 12vdc fan in the back of my refrigerator. As it turned out, my fridge had one built into its system however it was so far up on the back of the fridge, should it go out, I would never be able to reach it without removing the fridge. The extra fan I installed has its own thermostat to start & stop the fan however the system fan always kicks on BEFORE my new fan would. So I bypassed the thermostat on my new fan and installed the on/off switch in the bottom vent cover so I could reach it from the outside of my rig to turn it on around 80 degrees instead of the 90 preset temperature.
Here are a few pictures of the install. You can see I installed it AFTER the Dometic recall mod (Large Metal shield to the right of the fan) was taken care of. I added the wood bracket for now but plan on replacing it with a metal one soon. The fan came with its own metal bracket but would not allow me to point the fan upwards.
PS: To answer Nickโฆ I purchased the fan at my local RV supply store as a kit.. fan, switch, wire, thermostat for about $20 to $25 bucks. Itโs pretty small..!
I also installed this corner shelf next to my bed so I would have a place to set my glasses, keys, and wallet at night. Also a good spot for my Noaa weather radio. I picked up the rack at Wal-mart for 6 bucks and cut it down to just two shelves. I used the 3M self-stick (removable pull tab) hooks I found there also.
Patrick