[VAC] Fan/Light Fixture

[Hoyt Oliver <hedgehog@xxxxxxxx>]

I have a 1975 Land Yacht 25' which has yellowed extensively on all interior
surfaces. The vinyl trim and the plastic light fixtures are particularly
affected. How can I get the yellow out. I am reminded of the old Ipana
Toothpaste commercial when I ask that question. Also, is there a prohibition
against using cleaning solutions with ammonia, vinegar and baking soda
ingredients on interior and exterior surfaces?
Thanks
Hoyt Oliver