Enable Google Instant in Chrome Address Bar (Stable)

Step 1: Hit the wrench icon on the right-top, see image and navigate to Options.

 

Step 2: Right below there's a checkbox, see image to confirm. Check it.

Step 3: Once it is checked, a pop out box tells you to confirm your actions. Confirm it by hittng the OK button.

 

Step 4: Done :D Try use the address bar to search anything, you're on google instant now.