I'm currently playing my fathers home equit loan. (Michigan) Will I be able to write this off for tax purpose

Answer 1

You must be legally liable for the mortgage loan in order to claim the mortgage interest deduction on the Schedule A.
The form 1098 will come with his name and social security number, you can not claim it and neither can he as he, himself did not pay it.
Publication 936
http://www.irs.gov/publications/p936/index.html

Answer 2

If you are not on the loan then the answer is "no" for federal income taxes. The schedule A requires that the interest be secured by the taxpayer's first or second home.

Your father could claim it on his tax return, but you cannot.