“and is questioning why as a minority owner you would be the signer on the account.”
Not why he is a signer. Why the majority owner is not 9n the account.
The wife could then give him rights to the account.
“On the account” means the signer of the account. The account is in the name of the LLC. He said he set up the account, so he is presumably the only signer on behalf of the LLC. The bank is not going to allow a minority member of an LLC to be the only signer on behalf of the LLC without some sort of authority from the majority member. It would be nice if the OP checked back in to clarify since people are going to the trouble to give him free advice.