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I saw one at the dealer like that and was like ...ohh ohh not that one. But if it’s in the manual...interesting design..never have see that before...might be since they are so large.
Does the owners manual of your 2007 also state that condensation is normal?I’ve never had condensation in the light housings on my Expedition. This is not normal and if moisture is trapped in there the freeze thaw cycles will progress aging of the plastic. Also diffuses light, stupid design. Light assemblies should be sealed like windows.