Should I input my W2 if it has wrong SSN on it for me? I told employer and said it would be corrected but may take 24 to 48 hours to correct. What do i do?

Yes, if you enter your W-2 manually, TurboTax will use your SSN that you entered in the MY INFO section, so it will be the correct one.

When you get your corrected W-2, keep it with your tax file.  Basically, it is just to show that your Social Security withholdings are deposited to your account correctly. 

Here's more info on How to Manually Enter a W-2.