Currently on a laon plan where I am the co-signer for my brother for 6mn but the loan company only has my name on the contract. When refinancing and you are speaking to the dealer will you recognize that my brother was on this plan w/the dealer even though the loan company only shows my name?

If the loan company recognizes your brother as partially responsible for the loan, than that would be taken into consideration, however, if you are solely responsible for the loan, it will be considered completely on your credit.