We are legal residents of the State of Minnesota .
Our FG trailer and TV is registered in the State of Wisconsin.
As others have suggested I called the DMV of both states .
I was told that is legal to register my trailer and vehicle in another state ( not my state of legal residence) if the vehicle / trailer is garaged / operated for the majority of the year in that state
Since we store / park our trailer & TV year round ( Except when traveling ) at our second home in Wisconsin , I registered them both in Wisconsin .
The issue with out of state registration
as explained to me , is when people buy a trailer / vehicle out of state , register it out of state , license
it out of state and then normally store / operate it in their home state to avoid paying higher sales tax and license
This is considered tax avoidance.