I also have a 2009 Winnebago Journey. My fog lights and headlights both had very deteriorated reflectors behind the glass. I replaced both. The headlight was a fairly simple replacement since they are a Hella headlight. The fog lights are a different. They are also a Hella light fixture but are the cheapest pieces of crap. I was able to cross reference the numbers to another Hella fog light model FF50. This is a REAL fog light with a seperate powerful H7 bulb and are the same shape as the cheap piece of crap the factory installed.
My Hella Lights :: FF 50 Fog
Now there is some adapting needed because the mounts are different but well worth the extra work. These fog light also have an auxiliary clear stone guard to protect it which as low as these light are is also a good investment.
https://www.amazon.com/HELLA-Clear-S.../dp/B000H0KNZK
I have been thrilled on this great upgrade to the weak factory fog lights.