mpaton

Had a slightly closer look, and the water does seem to be coming from the right side, so I'm thinking it;s not the center stop light. The seal I saw squishing was under the plastic end cap, which I can't easily get off (and in fact I don't think I want it off). Taking the headliner out looks like quite a lot of work, with potential to break many fasteners, so I may be using some sealant on the outside after all. However, if that is done wrongly, it could trap water, so I'm going to think on it for a while. Thanks for all the suggestions.

Liftgate. I didn't see how a liftgate seal would let water into the compartment behind the trim, but I haven't done the deep dive yet so to speak.

We have a 2014 Transit connect Titanium. Last night, we had some fairly heave rain for about half an hour, and the Transit was sitting outside, parked a little nose high. This morning, my wife wants to show me the cover for the trim cover with the angled slats on the right side rear trim piece, just inside the tailgate. The slats have big water drops on them, and it is wet inside the compartment, which I've never noticed before. So water has got in somehow. I haven't had a detailed look yet, but this van has the factory roof rack system, with 2 cross bars on it. If I hold the back end of the right side longitudinal rail, I can flex it up and down slightly, and I can see the foam seal under it flex as well. So far, that's where I'm looking first when I get more time with it. Has anyone else had experience with roof leaks at the rear? Michael