My window defroster does not work for any lines, I did have my windows tinted this summer. I could see a few lines broken but not all? There are two terminals on passenger side, one on drivers side and one on top (not sure if that is antenna?). Does anyone know what voltges I should see at terminals, or what impedance (ohms) I should have between terminals? Any testing advice appreciated, I did a search but results were not detailed as I hoped. Thanks