RV Fridge mfgs. have their fans installed just above absorber coils controlled by a t-stat attached to right side fin on condenser.'
Fan(s) center line mid-position.
This position helps 'pull' air up/across absorber coils and 'push' air thru condenser fins.
Baffles can also be used to help direct air flow.
Absorber coils are the large tubes that run diagonally just above bottom of fridge.
Condenser is set of cooling fins at very top of fridge
T-stat closes at 130*F fin temp and opens at 115*F fin temp
DC power to t-stat should have an in-line fuse...an on/off switch can also be installed