Is interest on a RV loan (2nd home, yes sleeping, toilet and kitchen) deductible if it is not secured?

Is interest on a RV loan (2nd home, yes sleeping, toilet and kitchen) deductible if it is not secured? When I toggle no, then it is not deductible; why?

rjs
Level 15
Level 15

Deductions & credits

No, it's not deductible. The reason it's not deductible is that the tax law says that home mortgage interest is only deductible if the loan is secured by the home.