My 3 Way Fridge Fix

My 1989 caravan had a brilliant winter fridge that was dead set useless in summer. One February day (42 C) while comparing notes with a fellow camper whose fridge was working well, I persuaded him to take a look at mine. He walked to the side of the van, took one look and said "that will never work". The rear of the fridge had a vented panel from top to bottom. what I needed was a top vent and a bottom vent so that I could get convection happening (cool air in the bottom vent and warm air out the top). Home I went and removed my full length vented panel and bought a top & bottom vent kit. With the panel off, I could see that the fridge had a 60mm gap one side, 50 mm the other side and 150 gap above. This meant that any air that had ventured in to the rear of the fridge would have been totally confused about where to go. I bought a sheet of polystyrene foam (2400x1200x20mm for $24) and cut pieces to totally occupy the side gaps.This effectively added approx 50mm to the fridge sidewalls insulation. The top of the fridge had wiring and controls and wasn't suited to poly foam so I used block rubber foam over the top to occupy this large gap. All this meant that I had added enormously to the fridge insulation properties and had gained control of the cooling air movement. Additionally I installed an 80mm 12v fan about 250 mm below the condenser. I put a red illuminated toggle switch on the front control panel, picked up a power supply and wired it all together. Fan & switch $25 at DSE. Another piece of ally was used to manufacture a baffle from my new side wall panel to just below the condenser. That was all it needed. The air entering through the bottom vent stays only at the back of the fridge and can go nowhere other than through the condenser. The fridge now works magnificently and I have never turned the fan on. It's all about getting the airflow and directing it to where it's most effective.