if filing jointly where does it ask for my wife's info

When you are entering income on a joint return, every income entry screen will either have a spot with both spouse’s names there, or when you click to enter a W-2, 1099R, etc. it will ask you by name which spouse it is for.  You do not have to wait for the software to “ask” you for your spouse’s income.

Right after you enter your marital status.   When you indicate you are married in the Personal Info section, you will be asked if you want to file jointly with your spouse.   When you answer with a YES, TurboTax will request your spouse's information.