Mystery Mounting Points ??? Any Ideas
The device on the roof in the left portion of your photo appears to be one of your tank vents. This is one of the areas that must be monitored for leaks on our coaches. There is a hidden gasket inside of the shroud that seals the vent pipe to the roof and that gasket needs to be replaced about every third year. The device toward the front also looks like it may be a plumbing vent as well (possibly for the galley sink?).
The device on the side of your coach is not familiar to me. My speculation is that it may have been an attaching point for an aftermarket exterior table or something of that nature. A second possibility might be that it was an attachment point for a tire shield that was installed to protect the tires when the coach was in storage.
Good luck with your investigation!
Kevin D. Allen
WBCCI (Lifetime Member)/VAC/Free Wheelers #6359
1964 Overlander International/1999 GMC K2500 Suburban (7400 VORTEC/4.11 Differentials)
1978 Argosy Minuet 6.0 Metre/1975 Cadillac Eldorado Convertible (8.2 Liter V8/2.70 Final Drive)