wnjj wrote:
Newer is a relative term, but years ago my parents had a late 60's or early 70's travel trailer that had both 12v and 120v bulbs in the same fixture. They had 2 switches on the fixtures. If you want to get technical, some even older trailers had gas lighting so it hasn't always been 12v.
So if you want to be so inclusively "technical" why not go back to the stage coach days and include lighting systems used then?! Be real ... the OP has a ~ 10 yr old travel trailer and simply wants to know where / how to best pull 12 vdc for a radio so
of course even the suggestion that his interior lighting could be 120 vac is totally ridiculous. :W