hi guys i have a 99 audi a4. i took my back panels off because my defroster wasnt working. upon removal i saw the ground unscrewed on the passanger side. then on the drivers side of the glass i have two button, that look like 9v batterys, but i only have one place to put both of these buttons. where does each go? please help
jits

 

maybe you could take a picture of what you mean?